Digital Cameras: Canon PowerShot SX200 IS

A digital camera (or digicam for short) is a camera that takes video or still photographs, or both, digitally by recording images via an electronic image sensor.
Front and back of a Canon PowerShot A95.

Many compact digital still cameras can record sound and moving video as well as still photographs. In the Western market, digital cameras outsell their 35 mm film counterparts.

Digital cameras can do things film cameras cannot: displaying images on a screen immediately after they are recorded, storing thousands of images on a single small memory device, recording video with sound, and deleting images to free storage space. Some can crop pictures and perform other elementary image editing. Fundamentally they operate in the same manner as film cameras, typically using a lens with a variable diaphragm to focus light onto an image pickup device. The combination of the diaphragm and a shutter mechanism is used to admit the correct amount of light to the imager, just as with film; the only difference is that the image pickup device is electronic rather than chemical.

Digital cameras are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles. The Hubble Space Telescope and other astronomical devices are essentially specialised digital cameras.

Wednesday, October 28, 2009

Canon PowerShot SX200 IS

Creating gorgeous images is more fun than ever with the sleek, impressively equipped PowerShot SX200 IS, elegantly designed in three new colors. Capture close-up, wide-angle shots with stunning 12x optical zoom. Experience the unprecedented image quality and point-and-shoot convenience of Smart AUTO, along with enhanced operability and an intuitive new menu. HD shooting at 1280 x 720 pixels with HDMI output lets you see all the beauty of your HD images and movies on y…

Specifications

Format

Compact SLR-like
Max resolution

4000 x 3000
Low resolution

4000 x 2248, 3264 x 2448, 2592 x 1944, 1600 x 1200, 640 x 480, 320 x 140
Image ratio w:h

4:3,16:9
Effective pixels

12.1 million
Sensor size

1/2.3 " (6.16 x 4.62 mm, 0.28 cm²)
Pixel density

43 MP/cm²
Sensor type

CCD
ISO rating

Auto, 80 ,100, 200, 400, 800, 1600
Zoom wide (W)

28 mm