underwater digital cameras ratings
Some facts of digital cameras
A digital camera captures images in a digital format, unlike a conventional camera, which images using of a photographic film captures.
History:
Using a mosaic photo sensor, Eugene F. Lally of the Jet Propulsion Laboratory first showed how still photos can be produced in a digital domain. An engineer at Eastman Kodak, Steve Sasson, used solid-state CCD chips to build a prototype of a digital camera with a resolution of 0.01 megapixel, and recorded black and white digital images to a magnetic cassette tape. With this prototype model, Steve took the first image in December of 1975 with 23 seconds to to catch.
In 1988, Fuji DS-1P was the first digital camera that captured images as a computerized file. The camera in the U.S. market. In 1991, Kodak DCS-100 was the first commercially available digital camera, a 1.3 megapixel sensor. With advances in technology, modern digital cameras have become multifunctional and are now able to capture audio / video and still pictures.
Advantages:
1 - You get superior image quality. Digital Cameras provide a good to excellent image resolution.
2 - You get a fair price. A digital camera is reasonably priced and affordable.
3 - You can use the photos to your laptop. You can easily connect the digital camera to your laptop and transfer the photos on your hard drive.
4 - You can print in large sizes. The High resolution photos can be printed in large sizes by a plotter.
5 - You can e-mail the photos to your friends. You can view the photos by e-mail your loved ones.
6 - You can use the images to CDs or hard disk. Once the photos are put on digital camera to the computer, on a permanent storage CD or hard disk is possible.
7 - You can the camera in your pocket while you travel. The small size of the digital camera makes traveling with it easy and a pleasure.
8 - You can move around your subject. Zoom lenses offer close-ups of your subject in sharp focus. You can get very good close-ups of flowers, insects, stamps, coins, etc.
9 - You can rework the image in a computer. Any photo editing software can rework the images taken.
10 - You can get good pictures, even at low light situations. The flexible over sensitivity or ISO equivalents, digital cameras can easily take detailed pictures even in low light.
11 - You can set the quality still images of moving objects. Sports and fashion photography can be easily achieved due to the fast burst rate of digital cameras.
12 - You save money. There is no need of buying photographic films, developing them into negatives and positives. Moreover, the rechargeable lithium-ion batteries usually batteries, that last a long time.
13 - You as per your needs and imagination can choose. Many models are available like standard digital camera, underwater digital camera, waterproof digital camera, compact digital camera, and professional digital camera.
Storage:
Digital cameras use memory to capture and to store images. Some of the storage media used are onboard flash memory, 3.5 "floppy disks, video floppy disk, PCMCIA hard drives, CD or DVD, CompactFlash memory cards, Microdrive, Memory Stick, SD / MMC, MiniSD Card, MicroSD Card, XD-Picture Card, Smart Media, Memory, and FP.
Power:
Digital Cameras consume much power, which is supplied by powerful, small in size batteries. Batteries are broadly divided into two groups, namely, off-the-shelf and proprietary. Off-the-shelf batteries are like AA, CR2, CR-V3, AAA, and RCR-V3. They are lithium-ion (Li-Ion) or Nickel Metal Hydride (NiMH) batteries. Standard non-rechargeable AA alkaline batteries both work not or only work for a very short time in most cameras.
Proprietary batteries are built according to the manufacturer `s custom specifications and are generally available as aftermarket replacement parts. Generally, lithium-ion batteries are widely used as its own batteries for digital cameras.
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