21 Sep 08 Find a Nice Digital Camera
Author: Komang Setiabudi
Where are you going today? Are you going alone or together with your friends or family? Don’t forget to bring your camera. Don’t leave home without your camera. A lot of unique thing happen in the street. You can capture anything with your camera.
What is your camera? Do you still have your grandfather’s camera? Many people still use SLR (single lens reflection) cameras. A SLR camera is great because you can create photography art. A professional photographer will use both digital and analog camera.
If you go to the city and enter the camera shops, there are not many conventional cameras available now. Most people are preferred to use a compact digital camera. A digital camera is slim, full with features and easy to use. You don’t have to bring a big size camera and film wherever you want to take some pictures.
When you need to buy a digital camera you must think about the price, brand, features, picture quality, mega pixel, services and guarantee, etc. You can choose many brands such as Kodak, Canon, Pentax, Panasonic Lumix, Leica, Casio, Nikon, Sanyo, Samsung, Sony, and other brand. A digital camera starts from 1.3 mega pixels and above 10 mega pixels. You can get a good quality picture from 4 or more mega pixel resolutions. Don’t buy a digital camera below the 4 mega pixels because the picture quality is not so good when you print your photo. Recently, Canon PowerShot, Casio Exilim, Sony Cyber-shot, Panasonic Lumix and other Chinese brand Mikona camera promote 12.1 Megapixel digital cameras. Wow…
The latest digital camera also equipped with face detection technology, high sensitive ISO, anti shake, anti blur, auto focus, internal editing, and other high tech features. Also you can connect your digital camera to view full HDTV 1080p for better images. You don’t have to buy a separate video camera if you are a traveler because a compact size digital camera also equipped with a capability to make a movie. It’s incredible.
Before you make a decision please consider the feature of the camera. Don’t forget to check the brochure and browse the information in the Internet. Make sure that the lenses size, zoom, and flash light, battery life, etc. fits your needs. Ask the shop owner about bonus if you choose a particular brand. Sometime they give some bonuses such as external memory or soft case. Most digital camera also include video capture capability, but make sure that you can make a video or movie with sound or audio. Video without audio is not complete. It’s a great idea if you purchase a digital camera in a promotion season. Digital cameras are now available for both professional photographers and amateur enthusiasts. A professional digital camera is expensive and the size it’s bigger than the compact size digital camera.
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21 Sep 08 Helpful Guidelines For Choosing Your Next Digital Camera
Author: Vince Nitti
Digital cameras are available in many shapes and sizes, represent various specifications, and offer an impressive array of features in many price ranges. This is why their popularity is soaring all over the world, with many people already using one for their own pictures. They have become an integral part of many geographic and corporate cultures.
Digital cameras have become more than simply replacements for 35-mm cameras, however. They can be used for taking videos as well as still photos by upgrading the camera’s memory card to increase storage capacity, allowing them to replace the old VHS recorder as well.
While enjoying significant popularity on their own, digital cameras have also become integrated within a large number of other hand-held tools, such as PDAs and cell phones. Technology now allows these devices to incorporate a digital camera within them, making the use of both devices much more functional and convenient.
Many brands of digital cameras are available today with a wide range of features. All the big camera names of the past, Kodak, Nikon, Canon, etc., offer everything from 35-mm to digital products. Even companies better known for the computer products, such as Panasonic, Sony, and HP, are now offering digital cameras in their product lines.
Digital Camera Considerations
Digital cameras differ from conventional cameras by having a small LCD screen, sometimes including a viewfinder. This screen is similar to a TV screen, allowing the user to better see the picture before snapping it. Some have screens large enough to include much more of the subject and background than has ever been possible before.
Instead of film, these devices have slots to hold a memory card or “stick.” The amount of memory available within any device can be measured along a range of megabytes to gigabytes, depending on how much you’re willing to spend. Getting a camera with more memory means spending more money, but the extra storage capacity can be worth it.
Another feature to consider before purchasing is the type of battery used. While some units feature disposable batteries, the more expensive cameras use rechargeable batteries for longer energy life. Disposable batteries typically wear out quickly, while a charger is generally bundled with those cameras using rechargeable batteries.
Another consideration when considering which model to purchase is how the pictures are downloaded. Most digital cameras have a USB port to allow easy connectivity to a computer, but some require removal of the memory card and using a reader to download pictures into a computer.
Digital Camera Features
Those considering purchasing their first digital camera should at least know the basic features of an individual camera before spending a lot of money. While snapping a picture is basically the same in all cameras, there are many other features that will influence your decision. The number of megapixels used when taking a picture should be among the top concerns. Megapixels represent the number of pixels, or dots, that make up the picture. The more pixels used in a photo, the greater the clarity will be. Cameras that utilize a greater number of pixels are capable of producing better resolution over a larger image, but these pictures require much more memory space for storage.
Another important feature to consider in a digital camera is the zoom feature. The terms to be familiar with are optical zoom, which utilizes a moving lens and brings the image forward to make it appear closer, and digital zoom, which is used to crop and stretch the image. Most digital cameras have two-zoom capability.
The last feature this article will discuss is the durability of the camera’s case. Many buyers don’t consider this as important, but camera cases made mostly of plastic are relatively fragile. Some camera cases are made from a combination of metal alloy and plastic that is more durable and can sustain more jarring without allowing internal damage, although neither option can guarantee your camera’s safety. It’s better to spend a little more for a case that will better protect your investment.
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21 Sep 08 The Technology Behind Digital Cameras
Author: Roberto Sedycias
Technology has revolutionized the concept of capturing live images. The earlier concept of producing permanent photograph was based on pure chemistry. In 1830, Louis Daguerre, devised the first practical way of producing permanent photographs. Today we are talking about the computerized photo imagery in the filmless picture taken by a device that is smart in electronic intelligence and in appearance - digital camera.
A digital camera takes video, still photographs, or both digitally. It records images on a light sensitive sensor. Instead of using a film, an arrangement of charged-coupled devices-light sensitive semiconductors, which stores electrical charges,-does the job. These digital sensors-composed of pixels -transform the light from the scene snapped into an analog signal which is then converted into a digital version. One electronic filtering system regulates color and other picture components. Another system reduces the picture. The image is finally sent to a temporary storage area and ultimately onto a memory card. Many compact digital cameras can record sound, video and still photographs.
The images are transferred to a computer where they can be modified, printed, attached to email, inserted in web pages, etc. The most significant advantages of a digital camera are its memory capacity and ability to screen the images taken on a tiny video monitor.
The technology of the digital camera relates to the same technology of Video Tape Recorder. The first VTR in 1951 captured images from the television by converting the information into electrical impulses (digital) and subsequently saving them onto magnetic tape. It was in 1960s when NASA had made a major breakthrough by converting analog to digital signals by means of the space probe for mapping the surface of the moon. Also digital imaging had its other uses in spy satellites.
Kodak scientists invented the first mega pixel sensor capable of recording 1.4 million pixels. In 1991, Kodak released the first digital camera system- a Nikon F-3 camera equipped with 1.3 megapixels aimed at journalists. The first digital camera for the consumers which worked with a home PC via a serial cable were the Apple Quick Take 100 camera(1994), the Kodak DC40 camera(1995), the Casio QV-11 with LCD monitor(late 1995) and Sony`s Cyber-Shot Digital Still Camera(1996).
The main features of a digital camera can be summarized as follows:
Resolution: Resolution means sharpness of a picture. The higher the number of pixels, the higher is the resolution.
Memory: The pictures are stored like a data file in a digital camera. The size of the memory determines the number of picture which can be taken, stored and downloaded in the computer.
Flash Type: Most digital cameras have a built in flash of a range around 10 -16 feet which is required to provide extra light needed to take photographs in insufficient light.
Optical Zoom: Normally two types of zoom lenses are used viz., digital and optical. The optical zoom lenses serve more purpose like adding detail and sharpness.
Compression: This process helps to reduce the file size.
Lens: The length of a lens determines how much of a scene will fit into a picture.
LCD Screen: A very interesting feature of a digital camera is the LCD screen which permits one to see what the photo will look like before and after taking photographs, leaving room to decide whether to erase or save the photo.
In the market there are several brands of digital camera which are selling successfully and the continuous improvement in Technology is leading way to introduction of more and more exciting features in the digital camera.
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21 Sep 08 Caring for Your Digital Camera
Author: Monty Alexander
Most of the digital cameras have auto-focusing which enables even a kid to take decent photography. The LCD viewer helps in getting the right composition of the image. The preview of the images clicked allows keeping the best one from the lot and deleting the rest thus saving on space for more clicks.
Digital cameras don’t come cheap. With the kind of features and utility levels of a digital camera a good one costs above ten thousand. Good brands included Canon digital camera, Nikon digital camera, Sony digital camera etc. A digital SLR (Single Lens Reflex) would start from thirty thousand and run into lakhs. Digital SLR’s are hi-end cameras with professional features and good image quality. When one spends so much on a good quality digital camera taking care of it is also very important. All parts of the camera should be taken care of and there are equipments available in the market for the same. These equipments are one time moderate investment in keeping your expensive camera in good condition.
Camera parts like the lens, viewfinder and the LCD screen are the most essential elements of a camera. These parts should be regularly cleaned and taken care of. There is a blower available in the market which helps to dust off the dirt on the lens. One should never touch the lens, the viewfinder or the LCD display with fingers. The blower helps in removing the dirt and a lens cleaning solution helps in removing the sticky particles on the lens or viewfinder. The cameras lens cover should be put on when not in use this is the best way to protect your cameras eyes. Once the lens and viewfinder are cleaned the camera assures clear pictures and good view of the image.
Digital camera batteries should be taken out when not in use. If you intend to store your camera for a long time the batteries should be removed and on the next usage they should be charged and then used. Batteries discharge over a period of time and using them without recharging or storing them may hamper your camera and its performance. Also the camera should be stored in a cool dry place. Keeping your expensive Canon digital camera inside your car in summers will hamper the camera and you will have to bear a heavy price for your carelessness. Camera accessories like the extendable memory card should also be taken care off. The card should not be taken out while transferring pictures and should be stored properly when not in use. This enables good performance of the card otherwise it could be corrupted and will turn useless. Thus taking mediocre care of your digital camera and spending a little amount on its care would help in maintaining and making your camera viable for years together.
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20 Sep 08 Choosing the Right Waterproof Digital Camera
Author: Russ Snapper
Waterproof Digital Camera can capture your memories on a beach, at a nightclub, pool and in many other places because of its high technical configuration. It is specially designed for taking clear pictures of the objects under water that is below five feet and more. Parallel to this, you can view all the pictures instantly and you have quick access of the images taken. There will be lot of differences in taking shots and the working condition also varies when compared with the other digital cameras.
Waterproof digital cameras have different modes that are used for diverse scenes, but you need to have proper knowledge of the camera before use and that can be attained by thoroughly reading the manual. You have to do some research before deciding to buy. Always purchase a camera that is easily accessible by the thumb for clicking and the user interface should be simple. Technical aspects like compact, digital zoom, flash levels, dimensions, internal memory, movie mode etc have to be given importance while buying.
Sony and Canon offer waterproof digital cameras at different prices. Nowadays the waterproof cameras are designed for lifestyle purpose and fulfilling professional needs also. People enjoying vacation on water base always opt for waterproof digital cameras to enhance and cherish their experience. You can take colorful shots while doing underwater snorkeling or scuba diving and so you cannot rely on faulty cameras. In addition to this, these cameras are good options for capturing action shots that are water-based like white water rafting, fishing and kayaking etc. There are cameras available to capture underwater photographs at the depth above 30 feet.
Sealife DC500 is scuba divers delight as it can be used up to 200feet depth. This camera has two underwater shooting options. First one is typical shot for underwater with slight shutter pause or lag. But the Shark shooting option captures intended object and the range or distance is remembered for the following photos and hence there is no lag time with the closing speed of the shutter. It has got a flash and has expandability with other lenses like 3x and 4x optical zoom. Some main features of this waterproof digital camera are 5.0 mega pixels, 3x optical zoom and auto-focus with a LCD display of two inches for viewing the photos.
Olympus Stylus 770SW is referred as the toughest waterproof camera because it is not only waterproof but also freeze and crush proof. Among the waterproof cameras available in the market, this camera sounds like handling anything on the way without any damage. It has got 7.1 mega pixels and as a result gets great resolution and also has LCD display of 2.5 inches. Underwater, the camera is shockproof till 5 feet, can take up crushing force of 220 pounds and waterproof till 30 feet. It also has 30 shooting modes with movie sounds.
Pentax Optio W20 is another waterproof digital camera that is preferred by many photographers because it provides them the needed features. A rubber-sealed seam is an important feature that can be immersed till 5 feet for a period of half an hour. It’s distinctive features are 7 mega pixels, macro lens, 3x optical zoom, 2.5 inches LCD screen, recording videos and underwater settings.
The other popular waterproof digital cameras are Casio Exilim Zoom EX-Z1000, Fuji Fine Pix A400 digital camera and Bonica Snapper-XP underwater digital camera.
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20 Sep 08 Store the Beautiful Moments of Your Life With the Digital Cameras
Author: Jonson William
This electronic gadget should always be compatible with size, ease of use, manual options, battery types, shutter lag time. One thing to always keep in mind while purchasing a camera is that, it will solve your purpose in terms of personal or professional photography. The correct digital camera information will help you in taking decision for the right choice. Through those cameras, you will be able to share memory cards and batteries among your friends and family members. Camera’s brand lines are often similar and try to stay within the same brand. So, you can easily share your digital camera accessories with your family and friends. Now-a-days every one can own a digital camera and it is no longer a novelty now. User has many more options for shooting, saving, and printing the photographs. It can make the printing job more easier and get them printed as soon as possible. It totally depends on you, how often you are using the digital camera.
The compact or subcompact are the two main types of digital cameras. They are easy to carry and you can keep them with you all time for some great looking photos. If you want to explore or expand your photography skills, choose an advanced compact or a super-zoom digital camera. They offer lots of options in manual settings and much more advanced than the compact and subcompact cameras. They offer better quality in lighting situations, and its lenses provide a greater range of zoom, for the nature or sporting event photos.
SLR digital cameras are the professional cameras in photography. These kind of cameras are meant for the artistic photography and give a professional view point in photography aspect. It is more of a professional camera, It has a unique detachable lens advantage, which is higher in quality. Its manual control allows you to get creative with your photograph. This device always has good battery back up, but it is better to check battery life and the type of batteries in your digital cameras. The normal picture taking capability of a camera is between 120 to 300, but the SLRs average more than 250 pictures.
The Pentax Optio is one of the best compact digital camera in the market. Featuring with 12 mega pixels camera with 3x optical zoom. It offer superior image quality, which automatically takes a header and shoulder photographs of subjects. Except all these expensive digital cameras, there is a wide variety available in the Cheap Digital Cameras. This electronic gadget has started a new revolution in the photography and has made picture taking an incredible experience. Through this device, we can click unlimited amount of pictures without ever having to worry about wasting films and reloading it.
The cheap digital cameras, are quite easy to master and the memories are well worth them. You can really get great deals there because there are plenty of camera brands such as Canon, Kodak, Sony, and Toshiba all offering a wide range of cameras. They also offer cheap and reasonably priced cameras. This gadget allows you to save all the pictures to your computer without any hindrance. Through the computer one can easily send those photos to anyone in the world.
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19 Sep 08 Canon Digital Camera: the Better Way to Move in Past
Author: Jayson Pablo
There was an era when the past good times that we had lived happily were the matters of our memories only. With every new joy, those good times of past were being vanished from our memories and re-living them became so hard for all of us. Then the age of Art arrived and we all learnt to stock our memoirs in the form of paintings and sculptures. However, the boundaries of these methods were limited and hectic. The human culture was demanding more, then, in 1660’s the English Scientist Robert Boyle with his assistant Robert Hooke developed the first portable camera. This device was capable of capturing the events, thus, the humankind found their way to re-live their life. From the day of its inception, the camera has seen various changes in its style, performance, capabilities and looks.
From camera obscure to the modern analog cameras, the history of cameras is itself a legend. The concept of logarithmic camera was first reached its destination in the year 1972 and we got our first bona fide digital camera in the year 1990 with the name-tag of Logitech Fotoman. This camera made the use of CCD Image Sensor; it had the capability of storing the pictures digitally and making them available to download them in PC. From the year 1991, various companies such as Kodak, Fuji, Sony and others started manufacturing the High-end Digital cameras on very large scale. Their attractive products ranged from Simply Digital to the Professional Digital SLRs. When we aim these cameras at the object and fiddle with the shutter release button, the camera robotically focuses on the object and digitally takes a reading of the obtainable light and then with the help of the processor, CCD and ADC it interpolates the pixels to create crystal clear pictures.
Nowadays, having a digital camera is a non-stop passion for every one. There are many companies in the market, who manufactures these digital photographic engines, but some of them are prodigious. Canon is also among those prodigy masters. This giant offers very huge range of products from different categories. They also offer a superior range of digital still and video cameras. Canon Digital Cameras are one of the most significant products that are currently available in the market. These cameras employ high-quality features and tools to make them more efficient in the terms of quality and performance. These numerical photographic machines hold high-quality mechanism and the superb understanding of all colours so that they can easily tender the eye-pleasant lively images. Fathered in the year 1937, the Canon is now one of the biggest companies that offer qualitative technology for the cameras and optics. This company has redefined the way the world look at its past.
Canon has mind-blowing categories of digital cameras in its shelf. These categories hold the range of all way simple cameras to the superbly effective professional ones. These categories are- Digital Compact Cameras and Digital SLR Cameras. The Digital Compact Camera Category is consisting of two superb series named as IXUS and the PowerShot. Both of these series offers the cameras of astounding styles and great performances. The IXUS includes the cameras that are known as the ultimate Style Icons and combines unending grace with the avant-garde technology. In addition, the PowerShot series covers the range of point-and-shoot cameras. These masterpieces are amazing in looks and they capture brilliant images to cater the photographic feel of all levels. Digital IXUS860, Digital IXUS950, Digital IXUS960, PowerShot G9, PowerShot S5, and PowerShot SX100 are some of the highlights of the IXUS and PowerShot Series.
Whereas, the EOS Series of Digital SLR Cameras are the most widespread approach Digital SLRs. These digital cameras provide sparkling and snappish images with every shot. These cameras are admired and appraised by the photographers worldwide. Ranging from 10.1 MegaPixels to the latest 21 MegaPixels of superior CMOS resolutions, the EOS Digital SLR Cameras are making the world our playground, where we can reach to the new dimension creativity. If the life is all about finding new things then the Canon Digital Cameras are the ever-best things to find and explore.
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19 Sep 08 Digital Revolution With Canon Digital Camera
Author: Saris Hunsanugrom
There were times when cameras were considered to be a rich man’s luxury but nowadays, clicking pictures with camera has become an important part of our daily events. With the constant improvement of technology, cameras have undergone a sea change and it was in the late 1970’s when digital cameras saw the light of the day.
The first digital camera was Sony Mavica, an analogue camera that used video floppy. However, since then, various brands launched digital cameras such as Nikon, Kodak Casio, JVC, Sony and Olympus to name a few. However, Canon Inc. Japanese MNC specialized in the manufacturing of computer printers, photo copiers and cameras. Canon started its operation in the year 1934 with Kwanon camera.
Ever since Canon started manufacturing its camera operation, it became a hugely successful company and a cynosure of camera lover across world. Presently, Canon digital camera is well known for its state of the art technology and advanced features that make it a well known brand name. Some of the high end Canon digital camera includes Powershot series like Powershot G9, SX 100 IS, S5 IS and TX1.
Canon digital camera EPH services include Powershot SD 950 IS, SD 890 IS, SD 790 IS, SD 870 IS, SD 770 IS, SD 1100 IS, SD 750, SD 850 IS, SD 800 IS and SD 1000. Canon digital camera’s A series includes A 460, A 550, A 470, A 560, A 580, A 570 IS, A 630, A 710 IS, A 590 IS, A 720 IS and A 650 IS to name a few.
Apart from Canon digital camera, Canon is famous for its Canon EOS camera system that comes with Single Lens Reflex (SLR) technology. However, for amateurs who love to shoot and capture moments of love and joy, the Canon digital camera Powershot series is the best digital camera that comes with DIGIC processor and state of the art design.
Some of the highly rated Canon digital camera include Canon Powershot SD 1100 IS that supports 8 mega pixels and 3X zoom. Some other quality features include image stabilization, auto focus features for perfect shot. It supports JPEG file format and has a 2.5″ LCD display with 32 MB of internal memory as a part of Secure Digital Memory Storage feature.
Canon Powershot SD950 IS comes with 12 mega pixel and 3.7 optical and 4X digital zoom feature. It also supports movie and sound mode. Its basic features include image stabilization, auto focus, 2.5″ LCD display, Secure Digital Memory of 32 MB. Canon Powershot A590 IS includes image resolution of 8 mega pixels and optical and digital zoom of 4X, face detection focus, movie mode and manual and auto exposure along with 32 MB memory and 2.5: LCD screen.
Canon Digital Rebel XTi / Canon 400D comes with 10.1 mega pixel, file format of RAW and JPEG, DIGIC II processor, 9 point CMOS auto focus, micro drive support and automatic vibration and dust reduction. Apart from it, there are
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19 Sep 08 Digital Cameras - How They Work
Author: Ted Burns
Digital cameras come in various sizes, shapes, and specifications and offer a variety of impressive features.
Digital cameras are quickly gaining popularity around the globe. Many people already own one and routinely use it for their own pictures. Their use have become part of the culture among many communities and industries.
Digital cameras also have become part of a broad package of combined features with other hand-held tools, such as PDA devices and cellular phones. This makes the use of both devices much more convenient, having them combined in one, rather than two or more, functional instruments.
Digital cameras, moreover, not only can be used for still photos as with conventional cameras, but also for taking videos. An owner needs only to upgrade the camera’s memory card to increase storage capacity.
The marketplace offers a number of digital camera brands that provide a wide range of features. Olympus, Canon, Nikon, Kodak, and HP are some of the better-known brands of cameras offering the conventional 35mm to digital. Other key camera manufacturers include Sony, Panasonic, and Casio.
Digital Camera Considerations
Differing from conventional cameras, digital cameras have a small LCD screen, and sometimes an LCD screen plus viewfinder. The LCD screen is similar to TV screens that allow the photographer to see the picture, even before snapping it. Some have large screens that enable the photographer to see more of the subject and background.
Digital cameras also come with memory slots that hold a memory card or “stick.” The amount of memory available in them ranges from megabytes to gigabytes. Of course, the more memory, the greater the cost. However the extra storage capacity may be well worth the additional expense.
Another purchasing concern is the battery. Some digital cameras use disposable batteries. However, they wear out quickly, so most people recommend rechargeable batteries for longer energy life. Typically a rechargeable battery and a charger come in bundle with the camera unit.
Finally, consider the way the pictures are downloaded. Though many digital cameras come with a USB port which easily connects to a computer, there are others that necessitate removing the memory card and positioning it with a reader to download pictures.
Digital Camera Features
Camera buyers should know at least the basic features of their camera of choice before making an expensive purchase. Though the snapping of pictures is fundamentally the same from camera-to-camera, there are features that make one brand more appealing than others.
For example, the number of mega pixels used when taking pictures - meaning millions of pixels that help with the clarity of the pictures - should be one of the primary considerations to most buyers. Pixels are the individual “dots” that make up the content of pictures.
As such, cameras offering a greater number of pixels can produce larger images with better resolutions than those with less. Be aware, though, that cameras using a more pixels consume more camera memory when storing the images.
The camera’s zoom function is also critical. Most digital cameras are enhanced with a two-zoom capability; the optical and digital. Optical zoom uses a moving lens and makes the subject in the picture appear closer, while digital zoom crops or stretches the image.
Finally, don’t neglect the importance of the camera case’s durability. Some digital cameras are made predominantly of plastic materials - and are consequently more fragile - while others are comprised of a combination of plastic and metal alloy.
Either type has limitations in the amount of jarring that can be sustained without internal damage. Spend a little extra money to purchase a case that will protect your camera investment.
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19 Sep 08 History And Type Of Digital Cameras
Author: Roberto Sedycias
A digital camera is such a camera that will take either video or still snaps digitally. It records the images digitally on a light-sensitive sensor. Some digital cameras can take still snaps as well as video and audio. The digital cameras have become very popular nowadays and more and more people are opting for rather than regular cameras.
Digital cameras are technologically much advanced and have many user-friendly features that are usually not found in regular cameras. One such very good feature is that it displays the image on the camera’s screen just after you catch it. Thus you can click and record millions and millions of pictures, keep the ones you want and discard the others. After the pictures or videos are recorded, you can edit the images and thus can be a virtual master of the background, people etc. Imagine the fun when you can change the background of a picture taken at your home to be changed to a Hawaiian beach, or changing the hair color of your sister to a wild pink and many other things. The choices are unlimited.
Nowadays digital cameras can be incorporated in many devices like PDAs or mobile phones or computers etc. Some astronomical devices like Hubble Space Telescope also use specialized digital cameras.
Digital camera technology has evolved from the similar technology that first recorded television images. It was in 1951 when the first video tape recorder was used to capture live images using television cameras. They converted the information in electrical impulses and saved the information on magnetic tape. It was actually due to NASA`s space technology that used digital images to capture photographs of surface of moon and advanced computer technology that led to major developments in digital photography.
Government was also using this technology in forms of spy camera and the time that being spy satellites and it contributed immensely in advancement of science of digital imaging. Soon private companies like Kodak, Sony etc were releasing professional digital cameras for ordinary people. Their strong marketing tactics worked and today digital cameras are found everywhere.
There are many varieties of digital camera and we will discuss some of them. Compact digital cameras are one of such varieties and are designed to be small as well as portable. The miniature versions are called subcompact cameras. Though they do not have much advanced features or excellent image quality but they are very simple to use and easy to carry around. Images are stored using Lossy compression in JPEG format. Such cameras are generally equipped with a low power, built-in flash usually sufficient for close subjects. Live preview is generally used for framing the photos. They are perfect for casual and home use.
Another type are Bridge cameras that are higher-end cameras. They resemble DSLRs and also share some advanced features with them but just like compact cameras, the photo framing is done with help of live preview and they also have small sized sensors. A Fuji film FinePix Bridge camera is also equipped with super zoom lenses that give you a chance to take very distant shots, though at the cost of image quality.
Another type is Digital single lens reflex cameras that are based on film SLRs or single-lens reflex cameras. These cameras are characterized by the presence of a mirror-reflex system. Other types include rangefinder and are generally used for film cameras, professional modular digital cameras that are assembled from different modular components and used for specific purposes. The common brands for such cameras include Mamiya and Hasselblad.
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