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

Samsung SL420Samsung SL420

Samsung SL420


With 10.2 MP and a powerful optical zoom, it’s easy to capture every detail. And you won’t have to worry about flawed photos. It comes with a slew of tools to beautify those not-so-perfect shots. The SAMSUNG Perfect Portrait System includes beauty shot which automatically retouches facial imperfections and the Smart Auto feature. It automatically selects the scene mode ideal for the environment you’re shooting in. Capture all of your special moments with a camera that…


Specifications

Image sensor

  • Type
    1/2.33'' (approx. 1.09 cm) CCD
  • Effective Pixel
    approx. 10.2 megapixel
  • Total Pixel
    approx. 10.3 megapixel

Lens

  • Usable Lens
    still image mode: 1.0X ~ 5.0X play mode: 1.0X ~ 11.4X (depends on image size)

Viewfinder

  • LCD Monitor
    2.7"
  • Type
    TFT LCD

Focusing

  • Type
    TTL auto focus (Multi AF, Center AF, Face Detection AF, Object Tracking AF)
  • Modes
    normal: 80 cm ~ infinity macro: 10 cm ~ 80 cm (wide), 50 cm ~ 80 cm (tele) auto macro: 10 cm ~ infinity (wide), 50 cm ~ infinity (tele)

Shutter

  • Speed
    auto: 1 ~ 1/2,000 s (AEB, continuous: 1/4 ~ 1/2,000 s) night: 16 ~ 1/2,000 s

Exposure

  • Compensation
    ±2EV (1/3EV steps)

Release Date

  • First seen
    12 January 2009
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