21 Sep 08 Nikon Introduces D70s Digital SLR Camera; Offers Upgrades to 2004’s “Camera of the Year”
6.1-Megapixel D70s Features Internal and External Refinements to Become a Worthy Successor to the Venerable D70 Digital SLR Camera
MELVILLE, NY, APRIL 20, 2005 - Incorporating upgrades based on user feedback and advancement in technologies, Nikon® (www.nikondigital.com) today introduced the D70s™ 6.1-effective megapixel digital SLR camera. The D70s builds on the success of its popular predecessor, the D70, with multiple internal and external refinements including an improved autofocus system, larger LCD monitor, the addition of a remote cord port, new graphic user interface, among several other enhancements. Designed for a broad range of consumers from experienced and amateur photographers to beginning photo enthusiasts and hobbyists, the D70s offers a proven track record of superior image quality, robust performance, and advanced new features.
The Nikon D70s maintains leadership in its class of cameras and offers tremendous value to customers by combining various new and existing technologies into a comprehensive feature set. Its DX format 6.1-effective megapixel CCD sensor is optimized to deliver images with excellent sharpness and clarity. An improved autofocus system delivers enhanced performance, especially in Dynamic area AF and Dynamic area AF with closest subject priority modes. This combined with Nikon’s unique Dynamic Buffer technology (that allows the camera to continuously take up to 144 pictures at a speed of three pictures per second*) makes the D70s even more responsive and when photographing fast moving subjects.
“Nikon’s commitment to its customers is exemplified with the introduction of the D70s. Nikon has taken an internationally best-selling digital SLR camera and made it even more appealing to hobbyists and photo enthusiasts by incorporating a range of enhancements and new features that were based largely on the feedback we received from our customers and research findings,” said Steve Heiner, general manager of Digital SLR Systems for Nikon Inc. “The D70s now represents the best combination of performance and value for photo enthusiasts, and offers superb image quality, advanced speed and simple, intuitive usability. We are confident the D70s will continue to build on the popularity of the D70.”
Smart New Enhancements
The D70s incorporates a host of new enhancements and refinements internally and externally, in addition to all of the advanced features and innovations found in the D70:
- A refined 5-area autofocus system now has an all-area search priority to go along with the camera
- single area, dynamic area, and close subject priorities, improving the camera’s ability to acquire focus on fast moving subjects within the frame.
- The camera now boasts a larger 2.0″ LCD monitor, making it easier for users to review images and access menus.
- A new remote port for the MC-DC1 electronic cable release (optional) allows users to trigger the camera and hold the shutter open via an electronic cable release
- A built-in Speedlight with a wider angle of coverage, supports 18mm lenses.
- A new easier-to-read menu design in the D70s uses color-coded menus, and a larger type-face.
- A higher capacity EN-EL3a battery offers users more pictures per charge. The EN-EL3a battery comes with a new, smaller MH-18a battery charger. Both the new battery and charger are included with the D70s.
System Versatility: DX Nikkor Lenses
The D70s joins Nikon’s current selection of digital SLR models and inherits the popular DX format sensor and Nikon F-Mount, making it seamlessly compatible with all AF Nikkor lenses and Nikon’s exclusive DX Nikkor lenses. Designed exclusively for use with DX Format digital SLR cameras, DX Nikkor lenses deliver a wider picture angle, higher performance, and outstanding center-to-edge-to-corner image quality, while realizing smaller and lighter designs. All DX Nikkor lenses have a picture angle comparable to that of 35mm format lenses with a 1.5x factor. Since the introduction of the DX Nikkor lenses, the series has grown to include six lenses. These include:
- New AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED
- New AF-S DX Zoom-Nikkor 55-200mm f/4-5.6G ED
- AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5 IF-ED
- AF-S DX Zoom-Nikkor 17-55mm f/2.8G IF-ED
- AF-S DX Zoom-Nikkor 12-24mm f/4G IF-ED
- AF DX Fisheye-Nikkor 10.5mm f/2.8G ED
Simplified Creativity: Revolutionary Built-in Speedlight with i-TTL
Taking its cue from the D70, the D70s’ built-in Speedlight offers a level of performance that is unrivalled in any other digital SLR camera in its class. Designed to be a part of Nikon’s growing Creative Lighting System, the D70s’ built-in Speedlight adopts Nikon’s exclusive i-TTL flash control technology. In addition to normal on-camera use, the D70s’ built-in Speedlight can also be used in Commander Mode to remotely control one group of multiple SB-600 or SB-800 Speedlights wirelessly, offering users remarkable creative lighting control while still maintaining point-and-shoot simplicity. Alternately, an SB-800 can be mounted on the D70s and used as the Master Speedlight for even more control of up to three remote groups of wireless Speedlights, with each group consisting of any number of Nikon SB-800 or SB-600 Speedlight units. The D70s lets you shoot at synchronized speeds up to 1/500 second for great fill effects under brighter light conditions, while FV Lock maintains the measured flash value while recomposing the shot so you still achieve the appropriate flash output for the subject.
Powerful Software: New Nikon PictureProject™ and PictureProject In Touch
Software is a key component of the digital photography experience, and a key component of Nikon’s Total Imaging System. After conducting exhaustive worldwide research into customer expectations, requirements and work habits, Nikon has developed the new PictureProject 1.5 image management and editing software. Based entirely on a new software architecture that empowers customers of varying skill levels to maximize their digital photography experience, Nikon PictureProject 1.5 boasts powerful features wrapped into a brand new interface that navigates quickly and is easy to master. While PictureProject 1.5 is already a dynamic new addition to Nikon photography, the software also supports plug-ins, allowing users to add new features, as technology and the digital camera market evolve. The software allows users to easily transfer images to PC’s or MAC’s and browse, organize, and share them. With support for JPEG, TIFF and NEF and compressed NEF (RAW) files, PictureProject 1.5 works in close unison with Nikon Capture 4.2 as the ideal companion to its powerful feature set.
With Nikon’s PictureProject In Touch™, users can share photos without attaching them in an email or uploading them to a website. PictureProject In Touch is a free desktop software application, available via download on www.nikonnet.com and included with the newest version 1.5 of PictureProject™ software. It enables the fast, seamless and easy transfer of pictures between a sender and one or more recipients and can be viewed as full-screen slide shows with the click of a button. With this powerful software, Nikon can ensure that its customers will always keep ahead of the technology curve.
The Nikon D70s will be available either as an Outfit or a Set. The D70s Outfit includes the camera body, rechargeable battery, charger, new Nikon PictureProject™
software, neck strap and the new high-performance AF-S DX Nikkor 18-70mm f/3.5-4.5G IF-ED lens. The D70s Set includes all items mentioned above except the lens. The D70s Outfit will be available for an estimated street price of $1199.95, while the D70s Set (body only) will be available for an estimated street price of $899.95*1. The camera will ship in early May 2005.
MAJOR FEATURES OF THE NIKON D70s DIGITAL SLR
Accurate, vivid color
- 6.1 effective megapixels Nikon DX Format CCD imaging sensor produces 3,008 x 2,000-pixel images with high resolution and superbly sharp details.
- Advanced digital image processor uses advanced algorithms to optimize image quality, while also controlling auto white balance, auto tone and color control, as well as real-time processes to diminish digital noise and produce beautiful long exposure shots.
- Accurate white balance achieved by Nikon’s acclaimed 3D Color Matrix Meter with 1,005-pixel for highly precise control over white balance under widely varied lighting conditions.
High Performance and Quick Response
- Continuous shooting at 3 frames per second for a continuous burst of up to 144 pictures (When using JPEG NORMAL - Large setting, and a SanDisk SDCFH (Ultra II), SDCFX (Extreme/Extreme III), or Lexar Media 80X WA CompactFlash™ card) thanks to improved buffer memory handling, faster image processing, increased memory card access speed and greater system bus bandwidth. (The number of
continuous shots possible in a single burst may be fewer depending on the type of CF card used.)
- Ultra-short shutter time lag is hardly noticeable and offers very quick response.
- Immediate power-up has the D70s ready to take pictures before your finger can reach the shutter button.
- High-speed, high precision 5-area AF system with predictive focus tracking and Lock-on™ ensures quick response and sharp focus, while an AF-assist illuminator helps ensure top performance in dark situations.
- Fast shutter speed with a range from 30 to 1/8,000 sec. for full creative control.
- Fast flash sync shutter speeds up to 1/500 sec. available for great fill-effects under brighter light conditions.
Optimized and Predictable Results
- Seven Automated Digital Vari-Program selections easily accessed from the Mode Dial deliver automatic operation that optimizes white balance, sharpening, tone, color, saturation and hue for crisp and vivid results that match the intended shot. Selections include Auto, Portrait, Landscape, Close-up, Sports, Night Portrait, and Night Landscape.
- Image enhancement options optimize sharpening, contrast, tone, color, saturation and hue while using Auto Multi Program [P], Shutter-Priority Auto [S], [Aperture-Priority Auto A], or [Manual M] exposure modes to best match the scene or intended use for the picture. The easy to set choices include Normal, Vivid, Sharp, Soft, Direct print, Landscape or Custom optimization
- Optimized exposure with a choice of three TTL exposure modes, including Nikon’s acclaimed 3D Color Matrix Meter with 1,005-pixel RGB Sensor, variable Center-Weighted Meter and choice of Spot Meters.
- Nikon’s built-in iTTL automatic balanced Fill-Flash can shoot at synchronized speeds up to 1/500 second for great fill effects when shooting in brighter lighting conditions; compatibility within Nikon’s Creative Lighting System.
- Flash exposure compensation; a comprehensive selection of compensation tools enable more versatile picture taking; tools for ambient light, flash illumination and the two combined are provided.
- New Generation Color Reproduction System offers a choice of three color modes to ensure the best match for the shot when operating the camera manually.
Mode Ia: Renders natural-looking skin tones out of the camera. (sRGB)
Mode II: Realizes a wider color range suited for processing or retouching. (Adobe RGB)
Mode IIIa: Renders vivid landscape and flora colors out of the camera. (sRGB)
- JPEG and NEF Combination Filing System enables simultaneous recording of compressed NEF (RAW) and JPEG data for the same shot to optimize and accelerate workflow.
- Exclusive use of Compressed NEF files to maximize number of raw images possible for each
CF card used.
Creative and Versatile System for Subtle Expression
- High-Quality Nikkor lenses: The unrivalled performance of AF, AF-S and DX Nikkor lenses expand creative possibilities to the maximum.
- Built-in auto pop-up flash features exclusive i-TTL flash control, fast 1/500 sec. flash sync shutter speed, and supports Nikon’s Creative Lighting System for wireless control of remote SB-600 and SB-800 Speedlights. Also supports wide-angle lenses up to 18mm.
- ISO flash shoe makes it easy to attach an SB-600 or SB-800 Speedlight directly to the camera.
- Integrated Nikon Software Solutions:
Nikon Capture 4 (optional) is a comprehensive image editing and remote camera control package that fully supports NEF* (compressed and uncompressed) (RAW), TIFF and JPEG data. Among other features, the package offers Image Dust Off sensor dust and particle shade removal control; D-Lighting for scene-specific automatic dodge and burn control; and transformation of shots from the AF DX Fisheye-Nikkor 10.5mm f/2.8G ED lens to ultra-wideangle images.
Picture Project is Nikon’s versatile bundled software that simplifies and improves data transfer, as well as browsing and editing of image files. Picture Project introduces an entirely new intuitive user interface, and supports exclusive Nikon plug-ins for added function.
Improved Overall Performance
- Large 2 inch LCD monitor with user-friendly menus located directly below the viewfinder displays bigger menu fonts and icons that use familiar keywords for ease of understanding. A protective clear LCD cover is also included with the D70s.
- Versatile LCD playback options include Single frame, Thumbnail (4 or 9 segments), Zoom playback (up to 4.7x), Slide show, Histogram indication, and Highlight point displays with automatic image rotation for vertical shots.
- 25 Custom Settings allow you to personalize the operation of your D70s to match your shooting style or the demands of different shooting conditions
- Remote control operation made available with optional ML-L3 (IR) or MC-DC1 electronic cable release.
- Direct printing from the D70 to any PictBridge compatible printer using the supplied USB cable.
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21 Sep 08 Nikon Announes New and Enhanced Suite of Coolscan High-Speed Desktop Film Scanners
Nikon Redefines Quality and Performance With New Products and Exclusive Features
SAN FRANCISCO, CA, MACWORLD CONFERENCE & EXPO, Booth 1129, January 5, 2004 - Nikon® has answered the calls of photo hobbyists, professional photographers and graphics professionals with the next generation of Coolscan desktop film scanners – the Coolscan V ED, Super Coolscan 5000 ED and the Super Coolscan 9000 ED. The new film scanners are loaded with features and benefits designed for a wide range of users, including Applied Science Fiction’s™ Digital ICE4™ Advanced technology, Nikon’s exclusive Scan Image Enhancer™ and other “one-button-simple” solutions. The new lineup of Coolscan products will help small and large businesses to streamline their operations and increase productivity while giving home users and hobbyists an affordable solution to revitalize, restore and save precious family memories.
“While digital is dominating today’s photography and printing markets, there are still an enormous amount of film images as well as a need for creating high-quality, versatile hi-resolution digital files. In American homes, literally millions of negatives and slides holding precious family memories are wasting away in shoeboxes and attics,” said Jerry Grossman, vice president, marketing, Consumer Digital Products and Compact Cameras, Nikon Inc. “A Nikon film scanner is an incredibly useful tool to help unlock the potential of an image and use the advantages of digital to bring that image to life.”
Why Nikon?
Nikon invented affordable desktop film scanning in 1994 with the introduction of the original Coolscan, and has been the market leader ever since. In 2001, Nikon was the first manufacturer to offer the groundbreaking Digital ICE3™ technology in its film scanners, as well as high quality ED (Extra-low Dispersion) glass for sharp clear images and accurate color representation. Designed with this tradition in mind, Nikon possesses defining capabilities that make each Coolscan scanner the best in its class.
The new Nikon Coolscan desktop film scanners boast 4,000 dpi across the product line, a greater optical density range for even deeper levels of details, faster processing speeds (USB 2 and FireWire - IEEE 1394) and an enhanced version of Nikon Scan 4.
Nikon Coolscan scanners offer features such as:
- Scanner Nikkor ED lens - The single most important element in the production of high-quality scans is the lens. Nikon has incorporated lenses of the highest quality in each film scanner. ED (Extra-low Dispersion) lens elements are far superior in edge-to-edge sharpness, definition and contrast, as well as color registration, saturation and accuracy.
- Low-heat, high-accuracy LED light source - Most scanners use halogen or fluorescent lamps as light sources, but they require time to warm up and the heat they generate can cause damage to film. Nikon products are the only scanners to employ LEDs as the source of light. LEDs are a stable, precise light source, which require no maintenance or warm-up time and present no risk of your film being damaged.
- Digital ICE4 Advanced™ - Nikon’s ED glass and LED lighting help to optimize the effectiveness of Digital ICE4 Advanced™ components, making Nikon Coolscan scanners and ICE a perfect match.
- Nikon Color Management System (CMS) - Nikon CMS provides consistently accurate reproduction of image data on monitors and in printouts.
Coolscan Scanners Are Designed for Multiple Applications
Nikon Coolscan V ED - The Digital Time Machine
The Coolscan V ED is an affordable, high-performance film scanner that is designed to be easy to operate for first-time scanner users. For some film camera
users, their best digital camera may, in fact, be their own film SLR camera. By using the Nikon Coolscan V ED, a Nikon N75 or N80 can produce digital scans at close to 22-megapixel resolution.
The Coolscan V ED is perfect for those looking to bring old images back to life and preserve memories with better-than-original quality. Imagine removing scratches from a 1950s family reunion shot or sending your parents their wedding portrait looking better than the day it was taken. It’s more than film scanning - it’s “Timemachineography™.”
With an optical resolution of 4,000 dpi and 14-bit A/D input conversion, the Coolscan V ED is the perfect tool for a home user or photo hobbyist looking to enhance their own film photography experience. A new plug-and-play USB 2.0 interface even improves the speed of image transfer. Scan speed is also surprisingly fast - the Coolscan V ED can scan an image in only 38 seconds (including image transfer and display) - making the entire process smoother and easier from start to finish.
Super Coolscan 5000 ED - Superior Quality, Greater Efficiency, Increased Profits
The Super Coolscan 5000 ED is designed with the needs of imaging professionals in mind, delivering 135/IX240 film scanning at an amazing 20 seconds per image (including image transfer to display) - at 4,000 dpi optical resolution. This, combined with a 16-bit A/D converter and 16-bit output channel, gives pros the speed and power they need to truly affect the scope of their business.
The Super Coolscan 5000 ED is targeted primarily to small and medium-sized business users including professional photographers, web developers and photo finishers, who demand the highest standard of image quality and ultra high-speed scanning capability. The Super Coolscan 5000 ED achieves incredible scan speeds of 20-seconds by utilizing a newly developed high-quality 2-line CCD sensor.
In addition to speed, the scanner also offers a number of time-saving accessories including the redesigned Slide Feeder (SF-210) and Roll Film Adapter (SA-30) to accommodate a variety of slide mounts and uncut film. The Super Coolscan 5000 ED combines superior performance and efficiency to make it the perfect digital archiving solution for business users.
Super Coolscan 9000 ED - Maximum Versatility, Reliability and Performance
The Super Coolscan 9000 ED is the ultimate film scanning solution for serious imaging professionals designed to handle a broad range of film formats such as 35mm, 120/220, 16mm, 6 x 7, 6 x 9 film, electron microscope and more. The Super Coolscan 9000 ED caters specifically to professionals in fields such as advertising and studio photography who regularly work with 120/220 format films.
The scanner outputs a true optical resolution of 4,000 dpi while 16-bit A/D conversion allows the Super Coolscan 9000 ED to produce images of incredible overall quality. Multi-sample scan capability of as many as 16 passes ensures faithful reproduction with smoother gradation of color and detail. This scanner employs a newly developed 3-line CCD sensor, which contributes to unmatched image quality, as well as fast scanning (35mm: 40 seconds; 6 x 9: 185 seconds). Unlike the other new scanners, the Super Coolscan 9000 ED employs an IEEE 1394 interface to quickly manage extremely large file transfers.
The Super Coolscan 9000 ED also features unparalleled image restoration capabilities. Digital ICE4 Advanced™, The Super Coolscan 9000 ED’s exclusive Digital ICE Professional™ is now also compatible with Kodachrome film. Nikon’s Scan Image Enhancer offers a simple solution for adjusting brightness and color saturation.
Nikon Coolscan and Super Coolscan desktop film scanners come equipped with everything needed to begin scanning immediately. To make the film scanning experience as seamless as possible, Nikon is shipping its new Easy Scanning Guide CD-ROM which features a custom Flash™ animated tutorial explaining the setup and operation of each new scanner.
The complete line of Nikon scanners will be available this month. The Nikon Coolscan V ED will be sold at an MSRP of $599.95. The Super Coolscan 5000 ED will retail for $1099.95 MSRP while the Super Coolscan 9000 ED will be $1999.95 MSRP. For more information, visit www.nikoncoolscan.com.
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20 Sep 08 Types and Models of Polaroid Digital Cameras
Author: Russ Snapper
The type of camera with self-developing film is known as instant camera. Polaroid Corporation makes the famous Polaroid cameras.
Based on the type of film used, Polaroid cameras can be classified. The older Polaroids used instant film roll. Roll films were of two types: Positive or developing agent and negative. These rolls were available in three sizes. Pack film was later used in cameras, in which the photographer has to pull the film from the camera for developing and subsequently the positive and the negative have to be peeled separately while developing. This Pack film was available initially in a rectangular format and later in square format. Subsequent Polaroids such as the once famous SX-70 model utilized a square format integral film, which had the developer, negative, fixer etc in the same film. Development of each exposure was automatic once the shot is taken.
That’s the history of Polaroid camera. Polaroid digital cameras are now available in various types. You should be happy to know that there are certain models designed specially for a good cause. The m635P model from Polaroid Corporation was designed solely for promotion of breast cancer research. Polaroid Corporation along with actress Elizabeth Hurley initiated to offer a combined donation of $60,000 for the above Research foundation in the year 2006. Pink, light pink and magenta models of Polaroid digital cameras were launched especially for the above good cause and awareness.
One more noted achievement from Polaroid is the launch of the ION digital camera which combines high-end features and is easy to use. This ION digital camera has an on-board memory of 8MB and is light and compact, suitable for traveling people. Other features of this ION digital camera include automatic white balance with auto exposure, a 10-second electronic timer, the capacity to capture AVI video clips along with audio like a web cam, 640 x 460 pixel resolution, Arc Soft software on DVD, two AAA batteries and a USB cable.
Another great model from Polaroid is PDC 4355, which has glass lenses of high quality for Zoom and normal, 4.2 MP resolutions, 3x Optical Zoom and a fast CCD sensor. This is a good camera for photographers for point and shoot simplicity coupled with great optical performance. In the 3x optical and 4x digital zoom modes, the glass lens system permits for exposures for distances of 15 centimeters to infinity and has three modes for image quality and video clip functions.
This Polaroid digital camera has other features such as macro mode, auto focus, Inbuilt flash having the on, off and red eye and auto modes. The PDC 4355 model has an Inbuilt flash memory of 16 MB to store your video clips and pictures, later expandable up to 256MB with any available Secure Digital card. This camera also supports Print Image Matching feature that has the ability to have the camera and mode settings along with the images recorded.
You can easily upload the images to your computer through an USB cable by using the software ‘Photo Impression 5.0’. This software can launch your desktop automatically, detect any new photos in the camera and permit you to transfer them to your computer at the click of the OK button. This handy camera allows you to take pictures within a few minutes of receiving and is powered by two AA batteries.
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20 Sep 08 Digital Camera Basics-images
Author: Brian Lee
In the past twenty years, most of the major technological breakthroughs in consumer electronics have been built around the same basic process: converting conventional analog information (represented by a fluctuating wave) into digital information (binary information represented by ones and zeros, or bits). This fundamental shift in technology has changed how we handle visual and audio information — it completely redefined what is possible.
The digital camera is one of the most notable examples of this shift because it is so truly different from its predecessor. Conventional film cameras depend entirely on chemical and mechanical processes — you don’t need any electricity whatsoever to operate them, other than for a flash. On the other hand, all digital cameras have a built-in computer, and all of them record images electronically.
The new approach has been enormously successful. Since film usually provides better picture quality, digital cameras have not completely replaced conventional cameras. But, as digital imaging technology has improved, and prices dramatically decreased, digital cameras have rapidly become more popular.
In this article, we’ll find out exactly what’s going on inside these amazing digital-age devices.
Understanding the Basics
Let’s say you want to take a picture and e-mail it to a friend. To do this, you need the image to be represented in the language that computers recognize — bits and bytes, or binary information. Essentially, a digital image is just a long string of 1s and 0s that represent all the tiny colored dots — or pixels — that collectively make up the image. If you want to get a picture into this form, you have two options:
1) You can take a photograph using a conventional film camera, take the film to a developing lab that processes the film chemically, prints it onto photographic paper, and then place the picture on a digital scanner to sample the print (record the pattern of light as a series of pixel values).
2) You can directly sample the original light that bounces off your subject, immediately breaking that light pattern down into a series of pixel values — in other words, you can use a digital camera.
At its most basic level, this is all there is to a digital camera. Just like a conventional film camera, it has a series of lenses that focus light to create an image of a scene. But instead of focusing this light onto a piece of film, it focuses it onto a semiconductor device that records light electronically. A computer then breaks this electronic information down into digital data. All the fun and interesting features of digital cameras come as a direct result of this process.
Instead of film, a digital camera has a sensor that converts light into electrical charges.
The image sensor employed by most digital cameras is a charge coupled device (CCD). Some cameras use complementary metal oxide semiconductor (CMOS) technology instead. Both CCD and CMOS image sensors convert light into electrons. Without getting too technical, a simplified way to think about these sensors is to think of a 2-dimentional array of thousands or millions of tiny solar cells.
Once the sensor converts the light into electrons, it reads the value (accumulated charge) of each cell in the image. This is where the differences between the two main sensor types become a factor:
A CCD transports the charge across the chip and reads it at one corner of the array. An analog-to-digital converter (ADC) then turns each pixel’s value into a digital value by measuring the amount of charge at each photosite and converting that measurement to binary form. CCD sensors create high-quality, low-noise images. CCD sensors have been mass produced for a longer period of time, so they are more mature. They tend to have higher quality pixels, and more of them.
CMOS devices use several transistors at each pixel to amplify and move the charge using ordinary wires. The CMOS signal is digital, so it needs no ADC. Because each pixel on a CMOS sensor has several transistors located next to it, the light sensitivity of a CMOS chip is lower (many of the photons hit the transistors instead of the photodiode.) CMOS sensors traditionally consume little power. CCDs, on the other hand, use a process that consumes lots of power.
The amount of detail that the camera can capture is called the resolution, and it is measured in pixels. The more pixels a camera has, the more detail it can capture and the larger pictures can be without becoming blurry or “grainy.” High-end consumer cameras can capture over 12 million pixels. Some professional cameras support over 16 million pixels, or 20 million pixels for large-format cameras. For comparison, Hewlett Packard estimates that the quality of 35mm film is about 20 million pixels.
Exposure and Focus
Just as with film, a digital camera has to control the amount of light that reaches the sensor. The two components it uses to do this, the aperture and shutter speed, are also present on conventional cameras.
Aperture: The size of the opening in the camera. The aperture is automatic in most digital cameras, but some allow manual adjustment to give professionals and hobbyists more control over the final image.
Shutter speed: The amount of time that light can pass through the aperture. Unlike film, the light sensor in a digital camera can be reset electronically, so digital cameras have a digital shutter rather than a mechanical shutter.
These two aspects work together to capture the amount of light needed to make a good image. In photographic terms, they set the exposure of the sensor.
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20 Sep 08 Digital Camera: the Future of Cameras
Author: Nicholas Tan
Basically a digital camera is a deice use to capture pictures without the use of films. Unlike the conventional camera, the digital camera does not rely on mechanical and chemical processes. It has a built in computer and records the images it captures in an electronic form. Having and operating one does not even require the use of electricity.
Since the images that a digital camera captures is in electronic form, it is a language recognized by computers. This language is called pixels, tiny colored dots represented by ones and zeros that make up the picture that you just took. Just like any conventional cameras, a digital camera is furnished with a series of lenses that focus the light and creates the image that you want to capture. The difference here is then; a conventional camera focuses its light on a film while a digital camera focuses the light into a semiconductor device that electronically records the light. Remember the built in computer, it comes in here and breaks this information to digital data resulting to all the features of the digital camera.
Another feature of the digital camera is that it has a sensor that converts light into electrical charges. A charge coupled device or CCD is an image sensor that is found in a digital camera. While other low-end digital camera use complementary metal oxide semiconductor or CMOS as an image device, it can still become better and more famous in the future but most engineers are do not believe that it can replace the CCD for higher-end digital cameras.
A collection of tiny diodes, the CCD gathers electrons when they are struck by photons or the light particles. Each diode or photosite is sensitive to light, meaning that the brighter the light, the number of the electrons gathering will be larger
The price of a digital camera nowadays have been depreciating, one of the main reasons of this is because of the introduction of CMOS image sensors, this is because CMOS sensors are less expensive and are easier to manufacture than CCD sensors. A CCD and CMOS sensor works the same way at first, by converting the light electrical charges into photosites. Simply putting it, is to think that a digital camera works in such a way as thinking that the millions of tiny solar cells, each of which forms a part of the whole image. Both CCD and CMOS do this task using different methods.
When shopping for the best digital camera, take note of these key features.
Image quality. Check the resolution of the camera. The higher the resolution, the more thou will be able to enlarge your picture without the grainy or the out-of-focus effect that we all want to avoid.
Lens. Choose a digital camera with better digital zoom. The digital zoom of the camera will enable you take the pixels from the image sensor and incorporate them to make an image.
Power. Always opt for rechargeable batteries, they can always come in handy, plus you don’t waste as much money on the disposable ones.
Options. So you can brag to your friends how good a photographer or artist you are. Or choose the one that gives options that best cater to your lifestyle, so you won’t ever whine how you never get the right pictures.
Memory. If you’re a photo freak, be sure that you have enough memory in your camera to take all the wacky, freaky, funny and just about any photo you can. Think 512MB if you’re a photo junkie and takes pictures of just about anything.
Computer Interface. Always make sure that it is compatible with your PC, laptop, palmtop or whatever your local picture printer software is, you don’t want to go running around the whole state or the country looking for a computer that’s compatible with your digital camera, wont you?!
Physical. If you are going to be bringing it everywhere, choose a handy and portable digital camera. This way, it won’t always feel as heavy and bulky as those cameras that you see professional photographers are always dragging on their neck. Don’t they ever get tired of that?!
These are just the basic things you have to look for in a digital camera when you buy one. A digital camera is so great that it is quickly replacing all conventional cameras in the market, with all its technology and portability, truly the digital camera is the future of cameras.
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