19 Sep 08 Why Buy Digital Cameras?
Author: Roberto Sedycias
Technology development started at a very high pace during the 20th Century. Like many other areas of development, photography also saw major developments in its field. Photographic camera technology has seen a constant improvement from way back in 1913 when a 35 mm still camera was produced till 1985 when digital technology was first introduced in photography by Pixar.
Basically digital camera is an electronic gadget which captures and stores photographs in a digital format without using any processing films. The first true digital camera was launched in 1988 by Fuji Company .This camera used a memory card for storage purposes. The latest models of Digital Cameras are also able to record sound and video. These digital cameras store pictures on a small device called CCD (Charge Coupled Device). From Digital cameras the images can be transferred to computer and the images can be edited with the help of software like Adobe Photoshop.
Advantages of digital cameras
Convenience of use: The foremost advantage of using the digital camera is that you don`t need to worry about buying films and changing the rolls. You can click as many pictures you want, transfer them to computer, have a close look at them and get only the good ones printed after editing them thoroughly.
Edit options: The Digital cameras allow you to edit the photographs in the easiest way with the help of software. The color, brightness and contrast of the photo can be adjusted and the image can be cropped and resized as required. This helps to optimize the resolution of the photographs.
Economical: Digital cameras are economical in the sense that they do away with the cost of films and the cost of processing. When pictures are taken in bulk quantity the cost of films saved works out to a considerable amount.
Flexibility: You can view the photo you have just clicked on the LCD display of the Digital Camera and if you don`t like it you can retake the same.
Disadvantages of digital cameras
Quality of output: For professional reproduction purposes the conventional film camera is still the best as digital cameras cannot match them in resolution and depth quality.
Initial Cost: The initial investment cost for digital camera is higher than the photo film camera. The cost of the camera for home use runs from around US$ 150 to $1000 whereas the professional models cost may go as high as US$20000.
Slower Speed: Digital cameras take some time for storing the images which is unsuitable for action photography in which you need very fast clicks.
Important features
The digital camera quality largely depends upon its optic features, color depth, resolution etc. While shopping for a digital camera one should take care of following.
High Resolution: Resolution of a digital camera depends upon its capacity to store the dots or pixels. The more pixels it can store the higher will be the resolution. Cameras with a capacity of 5 mega pixels or more are ideal for home photography while professional photographers may look for a capacity of more than 7 mega pixels.
Capacity: The capacity of the digital camera to store pictures is also very important. The cameras have a built in memory capacity and additional memory card slot to store pictures. The cost of the memory cards is high but nevertheless they are very important to serve the purposes of storage.
Bit Depth: This relates to the color capability or the capacity of a digital camera to reproduce colors. Good cameras are capable of handling 24 bit color which fulfills the range of the human eye.
Optics and zoom features: A good camera must have optical zoom lenses with automatic flashes in order to produce better images.
Display: A good LCD display is important for a digital camera as it allows the user to flip through the images he has taken.
The digital camera is certainly becoming more and more popular in the modern era and is set to replace the conventional ones for all general purposes.
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18 Sep 08 Digital Cameras - the Constant Innovation and What to Look for When Buying
Author: Boris C.
Main Concept And Evolution
When digital cameras became common, a question many photographers asked was whether their film cameras could be converted to digital. The first recorded attempt at building a digital camera was by Steven Sasson, an engineer at Eastman Kodak. The first true digital camera that recorded images as a computerized file was likely the Fuji DS-1P of 1988, which recorded to a 16 MB internal memory card that used a battery to keep the data in memory.
Digital cameras can include features that are not found in film cameras, such as:
- Displaying an image on the camera’s screen immediately after it is recorded.
- The capacity to take thousands of images on a single small memory device.
- The ability to record video with sound.
- The ability to edit images and deletion of images allowing re-use of the storage they occupied.
A digital camera is a camera that takes video or still photographs, or both, digitally by recording images on a light-sensitive sensor. Most digital cameras measure subject distance automatically using acoustic or electronic techniques, but it is not customary to say that they have a rangefinder. The resolution of a digital camera is often limited by the camera sensor (typically a CCD or CMOS sensor chip) that turns light into discrete signals, replacing the job of film in traditional photography.
Digital cameras have high power requirements, and over time have become increasingly smaller in size, which has resulted in an ongoing need to develop a battery small enough to fit in the camera and yet able to power it for a reasonable length of time. Digital cameras are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles and even webcams. Webcams are digital cameras attached to computers, used for video conferencing or other purposes.
When You Buy Digital Camera
Measuring the “pixels per dollar” as a basic measure of value for a digital camera, there has been a continuous and steady increase in the number of pixels each dollar buys in a new camera consistent with the principles of Moore’s Law. Before you buy digital camera, it is important to determine what kind of pictures you want to take with it. Be sure to check first its capacity to produce high quality photo images and don’t forget about camera’s batteries - make sure they are rechargeable.
When you buy digital camera, sometimes the spending does not end there. For instance you may want to buy additional memory if the one that is already included doesn’t suit your need and its capacity is not enough for you. This is why you must make sure that the gadget that you buy has not only a “built-in” memory or a card slot for external and additional memory, but also includes memory card with good enough capacity.
The LCD is a special consideration you have to look into when you buy a digital camera. This is a small screen located at the back of a digital camera that allows you to preview the pictures you took. This has to be considered when you buy digital camera, because it uses up a lot of battery power.
It is essential for you to feel comfortable holding your digital camera while shooting. So, before you buy digital camera, the right thing will be to test and check if you are comfortable holding it and using it. Special features that will suit your needs should be thought about, too before you buy digital camera. No matter what your needs and wants are for the device, your financial resource will play a huge part in dictating the type of digital camera you will buy. When buying digital camera in online store, make sure you already know what you want and start sorting by lowest price first and later calculating shipping and sales tax.
With these information, you can now figure out what you really need and want before you buy digital camera.
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18 Sep 08 Digital Camera Basics
An electronics on-line discussion forum contains a story about an elderly woman who wanted a simple camera to take pictures of her grandchildren. When she received a digital camera for Christmas, she looked puzzled for a moment and then asked, “Where do you put in the film?” This humorous example demonstrates how the revolutionary technology of digital cameras may be mystifying for those who have difficulty grasping the concept of a “filmless” camera! For almost a century, photography enthusiasts sagely discussed such topics as 35mm film, light meters and F-stops; today, digital cameras have made such topics all but obsolete.
Howstuffworks.com contains an article by Gurevich, Karim, and Wilson that greatly simplifies an explanation of how digital cameras work. Very simply, they explain that CDs, mp3’s, and DVDs all share the same technology: they convert traditional analog “wave” data into digital data based upon “bits.” In so doing, this radical shift in technology has changed greatly – and forever – how we do things and what has become possible including digital “filmless” cameras. While film cameras depend upon chemical and mechanical processes, digital cameras contain a computer that records images electronically.
In 1994, Kodak and Apple developed and sold the first digital cameras. Today there are hundreds of models to choose from, depending upon the type of pictures you need, the complexity with which you’re comfortable, and what digital camera you can afford. For everyday use, most people prefer a “point and shoot” camera that isn’t complex, takes good quality pictures that can be loaded onto computers or printed for personal use and to send to friends, and is affordable. According to a number of consumer guides and customer reviews, the top ten digital cameras in the low, mid, and high price ranges are:
1. Nikon D300 (high)
2. Canon EOS 5D (high)
3. Canon EOS 40D (high)
4. HP Photosmart M547 (low, great value)
5. FujiFilm Finepix S700 (mid)
6. GE A730 (mid)
7. Nikon D200 (high)
8. Canon EOS Digital Rebel Xsi (high)
9. Panasonic Lumix DMC-FZ18 (mid)
10. Canon EOS 30D (high)
The point should be made that what constitutes a “great” digital camera is usually in the eye of the beholder. One person’s “top ten” list is almost certain to differ from another person’s. For example, a digital camera that is making devoted converts is the Casio Exilim series that sells in the mid-level price range, depending upon your digital camera photography needs. On the other end, Digital Camera.com rates the Pentax Optio E-10 as “the worst digital camera ever.”
With all these differing opinions, what’s the best way to buy the digital camera that’s right for you? If you simply want to take personal pictures, choose a digital camera that has at least three megapixels. This will give you good quality pictures at a very affordable price. Remember that the higher the number of megapixels, the better quality your pictures will be, but the digital camera you choose will be more complex and more expensive. Also consider the size and shape of the camera; is it easy for you to carry in your purse or pocket? Finally, be sure your digital camera has at least 256-512 megabites of space on its memory card so you won’t have to buy additional memory cards. Taking all these factors into consideration will help you enjoy capturing treasured memories for years to come.
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18 Sep 08 Cheap Digital Camera Varieties
Author: Russ Snapper
Major manufacturers such as HP, Kodak, Samsung and Fuji offer cheap digital cameras too. Cheap digital cameras generally have lesser advanced features such as multiple file resolution settings, optical zoom, optional image file type settings, advanced automatic exposure meters, large capacity memory cards, replaceable lenses and waterproofing. Most of the cheap Digital cameras are of point and shoot type.
Image quality is related to Megapixel rating directly and the handling of white balance by the camera. If you want to post pictures on a web site, email pictures or store them on hard drives, cheap digital cameras with a 1.3 Megapixel rating are more than satisfactory. If you want to have images of portrait quality, then you have to look for cameras with 3 mega pixels or higher ratings.
Due to the Megapixel rating, many cameras are expensive. The higher the rating of the mega pixels, the larger the photographs. However, cheap digital cameras will not come with a lot of mega pixels but still may not be necessary at all times. You don’t require a lot of memory if you don’t need very large pictures. Most cheap digital cameras will print eight by ten inches and this is what many people may need.
However, cheap digital cameras can be an excellent gift for young children. If you want to get started in digital photography and if you are not sure how to take it forward, cheap digital camera is an excellent choice. It can also be a spare or a good second camera for keeping in your boat or car for taking advantage of capturing some unexpected photo opportunities. You need not spend a large amount of money for buying a brand new digital camera just for opening up the box and reading the instruction manuals once but not interested to learn all the features of the camera. Still, most people often get discouraged from buying a used digital camera as they feel that they can get great pictures by getting the most expensive camera available. There are many cheap digital cameras available for sale and you may not require all of the fancy features and thus can save money.
You have to think about the overall picture quality you get from a cheap digital camera. It can take amazing pictures outside and if you try to take some inside the house, the quality can be poor. Though you can repair them with some photo editing software, you will not get professional photograph pictures. But you can have it for your basic picture taking needs.
You can look for cheap digital cameras available on a number of websites and can read reviews and blogs from some people who have tried with such cameras. This is the best way for deciding the type of cheap digital cameras suitable for your needs. Many sites have listings of sales, coupons, bargains and cheap deals. You can select a specific deal offered on a cheap digital camera sent to you via palm text message, email, RSS feed or mobile phone amongst others. Such alerts on deals can be customized to enable you to select for receiving only cheap digital camera offers from a particular brand or vendor in an area. You can also customize such that cheap digital cameras can be classified based on the price as everyone has a different budget.
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18 Sep 08 Advantages of Compact Digital Cameras
Author: Russ Snapper
Compact Digital Cameras are simple to use with no complications in their operation. Today, the compact digital cameras are available in different versions. Features are similar to mobile phones with many options and you can quickly filter the features not used by you. Compact digital Cameras are offered by leading brands like Nikon, Canon, Panasonic and Fuji and so your choice is wide for selection. Compact digital cameras are portable and small camera devices and the smallest are referred to as subcompacts. They are designed for easy use and with features of high picture quality.
The images can be stored using only JPEG compression. They have in-built flash with low power and motion picture feature. They can take pictures of long range with sharp focus. Compact digital cameras are ideally suitable for snapshot and casual use.
The compact digital cameras can transfer data when connected directly to your computer. Traditional cameras have been using serial port but today the USB is widely used. Some companies offer FireWire port or the Bluetooth in their devices. Bluetooth is a wireless network that can be used by digital camera and also by other devices for exchanging information with a computer.
Subcompact Cameras are tinier than the Digital cameras. You can easily fit the same in your pockets and purses. It gives you the advantage of carrying almost everywhere and is the handiest one. The only disadvantage is its price, which is more expensive than the digital cameras and you will have a few manual controls. This also leads to over-exposing pictures.
For photographers, while traveling, their choice is the ultra compact digital camera. Though it is smaller in size, its performance is amazing. Some cameras have fantastic in-built zoom packed and give you extraordinary picture results. The mega pixels number varies from three to eight within the various brands of cameras available. Some cameras have digital zoom but for unbelievable picture quality and clarity you should go for cameras with both digital and optical zoom.
The battery life of these cameras varies and the quantity of pictures taken will depend on exposure type. Many Compact digital cameras have inbuilt movie mode along with sound. If you plan to capture action in your camera, then you should be sure of extra battery available with you. Before purchase, you have to compare prices and performance of all the models available. If you are planning to buy a particular model, select the model number. Otherwise compare technical opinions of the compact digital cameras available in the market. Size of the device is very important and the digital technology advancement has definitely increased the sales of compact digital cameras. Though they are dimensionally convenient, the way of use is a little difficult because of its smaller controls.
Features in these cameras keep on changing and improving. They are presented with speed activation and self –adjusting zoom by which the lenses capture fast motion shots. If the compact digital camera does not have the speed-setting feature, it cannot be used in a light-changing environment.
The compact digital cameras are getting smaller day-by-day that it has reached the size of credit card and can produce decent shots. Traditional cameras had heftier counterparts, but the camera size is not a matter since the compact digital cameras deliver superb pictures and never let you down with regard to quality and clarity.
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18 Sep 08 How to Buy Discount Digital Cameras
Author: Russ Snapper
Many brands of discount digital cameras are available from manufacturers such as Kodak, Fuji, Nikon, Olympus and Canon amongst others.
Why these cameras are discounted? The reasons could be like they have been over purchased with a lot of stocks left or it could be a means of making you enter their store. Websites use discounted items to grab your attention to their website many times. Online purchasing has emerged as a large market and it can save some money to the company when you purchase online. As expenses such as opening a store, paying out salaries for employees, purchasing shelves and other fixtures are not incurred, these savings can be passed on to you to some extent.
By saving money on the purchase of discount digital camera, you will feel great as by not paying the full price, you still have the same quality. The digital cameras are exactly the same as the difference here exists only on the price. Hence, why should you pay an expensive price as you can get the same camera when you purchase it on a discount? With the money thus saved, you can buy other great add-ons for your digital camera.
Finding discount digital cameras is easier over websites. The question is which digital camera to choose. You can find discount digital cameras from most major digital camera manufacturers. You should have a basic idea of the options, features and brand name of the digital camera you want to buy. You can also find from sale bills and newspapers about different types and brands of digital cameras along with the prices offered at many stores. Some times, though the deals are advertised over the web, they may not have them in their stores. Earlier the digital cameras had one thing in common when compared with non-digital cameras, (i.e.) an expensive price tag. However the cost of digital cameras has dropped so much recently that you can purchase a digital camera for less than $250.
When buying a discount camera, you have to be aware of at least the buzzword ‘Megapixel’ related with digital cameras. Megapixel refers to the number of pixels available per million or the resolution of the image. This is important to be considered because Megapixel directly relates to the image quality obtained. The factors such as budget, mega pixels, exposure control, battery life, user controls and Zoom lens are all important while making a choice of a camera and to get the best out of it. Knowing these features will save you time when you start looking for a discounted digital camera.
You have to understand also the type of software that is needed for the discount camera you have planned to buy. Because all digital cameras do not use the same software for storing or to transfer the photos from the camera to the computer. Make sure that the software supplied will be compatible with your computer, without the need for upgrading your older computer for the sake of having the photos on your computers.
If you don’t have an idea of the features you need, you can also then search by brand name of the digital camera and read all about the various models offered. Still, Price should not be the only factor when you shop for discount cameras, but also certain basic features.
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18 Sep 08 The Early Digital Camera
Author: Roberto Sedycias
A digital camera is basically a digital device that enables images to be captured. Digital camera images are stored electronically rather than on film. This process involves converting light into electrical charges, and then translating this back into the image that was seen through the digital camera LCD. Although the digital camera is a recent addition to the world of photography, the concept of the possibility of a digital camera was begun in the 1950s.
The early concept of the digital camera was closely linked to television technology. It began with digital images being recorded on scanners and in the form of digital video signals. In 1951 broadcasting companies were recording images as electrical impulses and onto magnetic tape from their television cameras, and this paved the way for digital camera technology to begin. By 1956 electrical impulse recordings were common practise within film industry, and camera manufacturers began to dream of a digital camera device.
The first record of a patent for a type of digital camera was in 1972 when Texas Instruments patented a camera that did not require film. However, the patent revealed a more analog based design rather than a digital camera, and there is no record of whether the camera was actually created. What the patent does show, however, is that interest towards a digital camera was growing with the idea that the need for film could be removed. A pioneer in the history of digital camera was Steve Sasson, an engineer at Kodak. Digital images were of the moon were being transmitted via satellite by NASA, using a mosaic photo sensor, and he saw the possibility of a digital camera for commercial use. In 1972 he began to group together available equipment used within the film industry to create an image digitally rather than on film.
Central to this early concept of the digital camera, and still used by digital cameras today, is the Charged Coupled Device. The CCD detects light and colour intensity and then converts this information into electrons. The value of each cell in the image is then read, and converted to binary format to make the image computer compatible. Steve Sasson produced his first digital camera image in 1979. The image took a total of 23 seconds to take, and a further 23 seconds to read from the playback unit. Although the digital camera image was less than perfect, it showed that the digital camera was a possibility. Kodak had developed a camera that developed picture from light, but it was never manufactured for the public.
The first camera to be marketed was the Sony Mavica electronic still camera in 1981. It was not a true digital camera as the image was recorded on mini disc, and then attached to a television or video. It was more a freeze frame video camera but it greatly influenced people`s attitude to the recorded image. It made public the possibility of a camera that stored images using techniques other than film. It still used more television technology but was the first hand held with the general idea of digital camera usage. Cameras that could transmit images via satellite became popular, but were used by the media only due to the expense incurred. The possibilities were becoming apparent and images were used for news coverage. The first camera for general use with a computer was the Apple Quicktake 100 camera which appeared in1984. In 1986 the Canon RC-701 was used for coverage of the Olympics, with quality images printed in the newspaper. This showed the possible quality, and the desire for the digital camera was born.
The first mega pixel sensor was invented in 1986. It contained 1.4 million pixels and was suitable for a digital camera image measuring 5×7 inches. In 1987 accessories for storing, printing, manipulating, transmitting, and recording digital images came onto the market, with the Fuji DS-P1 arriving in 1988. This is arguably the first true digital camera as recognised today, boasting a 16MB memory card. With the arrival of JPEG and MPEG standards in the 1990´s, the face of the digital camera was changed for ever. Kodak marketed the first readily available digital camera that met all standards, with the Kodak DC40 in 1995.
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Tags: camera manufacturer, camera manufacturers, camera technology, Canon, CCD, digital cam, Digital Camera, digital camera images, digital camera technology, Digital cameras, digital image, digital images, film, Fuji, fuji ds, images, kodak, mega pixel, memory, memory card, photo, photograph, photography, picture, pixel, quality image, quality images, Sony, sony mavica, still camera, video signals
17 Sep 08 The Early Digital Camera
A digital camera is basically a digital device that enables images to be captured. Digital camera images are stored electronically rather than on film. This process involves converting light into electrical charges, and then translating this back into the image that was seen through the digital camera LCD. Although the digital camera is a recent addition to the world of photography, the concept of the possibility of a digital camera was begun in the 1950s.
The early concept of the digital camera was closely linked to television technology. It began with digital images being recorded on scanners and in the form of digital video signals. In 1951 broadcasting companies were recording images as electrical impulses and onto magnetic tape from their television cameras, and this paved the way for digital camera technology to begin. By 1956 electrical impulse recordings were common practise within film industry, and camera manufacturers began to dream of a digital camera device.
The first record of a patent for a type of digital camera was in 1972 when Texas Instruments patented a camera that did not require film. However, the patent revealed a more analog based design rather than a digital camera, and there is no record of whether the camera was actually created. What the patent does show, however, is that interest towards a digital camera was growing with the idea that the need for film could be removed. A pioneer in the history of digital camera was Steve Sasson, an engineer at Kodak. Digital images were of the moon were being transmitted via satellite by NASA, using a mosaic photo sensor, and he saw the possibility of a digital camera for commercial use. In 1972 he began to group together available equipment used within the film industry to create an image digitally rather than on film.
Central to this early concept of the digital camera, and still used by digital cameras today, is the Charged Coupled Device. The CCD detects light and colour intensity and then converts this information into electrons. The value of each cell in the image is then read, and converted to binary format to make the image computer compatible. Steve Sasson produced his first digital camera image in 1979. The image took a total of 23 seconds to take, and a further 23 seconds to read from the playback unit. Although the digital camera image was less than perfect, it showed that the digital camera was a possibility. Kodak had developed a camera that developed picture from light, but it was never manufactured for the public.
The first camera to be marketed was the Sony Mavica electronic still camera in 1981. It was not a true digital camera as the image was recorded on mini disc, and then attached to a television or video. It was more a freeze frame video camera but it greatly influenced people`s attitude to the recorded image. It made public the possibility of a camera that stored images using techniques other than film. It still used more television technology but was the first hand held with the general idea of digital camera usage. Cameras that could transmit images via satellite became popular, but were used by the media only due to the expense incurred. The possibilities were becoming apparent and images were used for news coverage. The first camera for general use with a computer was the Apple Quicktake 100 camera which appeared in1984. In 1986 the Canon RC-701 was used for coverage of the Olympics, with quality images printed in the newspaper. This showed the possible quality, and the desire for the digital camera was born.
The first mega pixel sensor was invented in 1986. It contained 1.4 million pixels and was suitable for a digital camera image measuring 5×7 inches. In 1987 accessories for storing, printing, manipulating, transmitting, and recording digital images came onto the market, with the Fuji DS-P1 arriving in 1988. This is arguably the first true digital camera as recognised today, boasting a 16MB memory card. With the arrival of JPEG and MPEG standards in the 1990´s, the face of the digital camera was changed for ever. Kodak marketed the first readily available digital camera that met all standards, with the Kodak DC40 in 1995.
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Tags: camera manufacturer, camera manufacturers, camera technology, Canon, CCD, digital cam, Digital Camera, digital camera images, digital camera technology, Digital cameras, digital image, digital images, film, Fuji, fuji ds, images, kodak, mega pixel, memory, memory card, photo, photograph, photography, picture, pixel, quality image, quality images, Sony, sony mavica, still camera, video signals
