Compact Digital Cameras
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Compact Digital Cameras

 

We sell cheap digital cameras that are locally sourced with genuine Australian warranties.

Compact digital cameras are designed to be tiny, portable and are particularly suitable for casual and snapshot uses. Hence, they are also called point-and-shoot. The smallest is generally less than 20 mm thick. They are described as subcompacts or "ultra-compacts" and some are nearly credit card size.

The models are from ruggedized to water-resistant models and  incorporate a retractable lens assembly allowing a thin cam to have a moderately long focal length and thus fully exploit an image sensor larger than that on a phone, and a mechanized lens cap to cover the lens when retracted. The retracted and capped lens is protected from keys, coins and other hard objects, thus making it a thin, pocketable package. Subcompacts commonly have one lug and a short wrist strap which aids extraction from a pocket, while thicker compacts may have two lugs for attaching a neck strap.

It is usually designed to be easy to use, sacrificing advanced features and picture quality for compactness and simplicity; images can usually only be stored using lossy compression  (JPEG). Most have a built-in flash usually of low power, sufficient for nearby subjects. Live preview is almost always used to frame the photo. Most have limited motion picture capability. Compacts often have macro capability and zoom lenses but the zoom range is usually less than for bridge and DSLRs. Generally a contrast-detect autofocus system, using the image data from the live preview feed of the main imager, focuses the lens.

Typically, these are incorporate a nearly silent leaf shutter into the lens but play a simulated sound for skeuomorphic purposes.

For low cost and small size, they typically use image sensor formats with a diagonal between 6 and 11 mm, corresponding to a crop factor between 7 and 4. This gives them weaker low-light performance, greater depth of field, generally closer focusing ability, and smaller components than cameras using larger sensors.

They have GPS, compass, barometer and altimeter and some are rugged and waterproof.

A digicam is a camera that encodes digital images and videos digitally and stores them for later reproduction. Most cameras sold today are digital,and digital cameras are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles.

They share an optical system, typically using a lens with a variable diaphragm to focus light onto an image pickup device.The diaphragm and shutter admit the correct amount of light to the imager, just as with film but the image pickup device is electronic rather than chemical. However, unlike film cameras, digital cameras can display images on a screen immediately after being recorded, and store and delete images from memory. Many digital cameras can also record moving video swith sound. Some digital cameras can crop and stitch pictures and perform other elementary image editing.

 

The two major types of digital image sensor are CCD and CMOS. A CCD sensor has one amplifier for all the pixels, while each pixel in a CMOS active-pixel sensor has its own amplifier. Compared to CCDs, CMOS sensors use less power. They use back-side-illuminated CMOS (BSI-CMOS) sensors which use light more efficiently. The final image quality is more dependent on the image processing capability of the camera.

It's resolution is often limited by the image sensor that turns light into discrete signals. The brighter the image at a given point on the sensor, the larger the value that is read for that pixel. Depending on the physical structure of the sensor, a color filter array may be used, which requires demosaicing to recreate a full-color image. The number of pixels in the sensor determines the camera's "pixel count". In a typical sensor, the pixel count is the product of the number of rows and the number of columns. For example, a 1,000 by 1,000 pixel sensor would have 1,000,000 pixels, or 1 megapixel.

They are usually designed to be easy to use. Almost all include an automatic mode, or "auto mode", which automatically makes all camera settings for the user. It is common for current compact cameras to include more advanced features to accommodate users who desire more detailed control the camera's settings. They typically contain a small sensor which trades-off picture quality for compactness and simplicity; images can usually only be stored using lossy compression (JPEG). Most have a built-in flash usually of low power, sufficient for nearby subjects. A few high end compact digital cameras have a hotshoe for connecting to an external flash. Live preview is almost always used to frame the photo on an integrated LCD display. In addition to being able to take still photographs almost all compact cameras have the ability to record video.

You can also buy cheap accessories from all the major brands here.

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New Products For August - Compact Digital Cameras