xpdigitalcameras.com

A digital camera is a camera that takes video or photos or both, digitally by recording images by means of an electronic image sensor.Many compact digital cameras can record sound & moving video as well as still images. Most 21st century cameras are digital.

Digital cameras can do things film cameras can not:

• Display images on a screen immediately after they’re recorded,
• storing thousands of images on a single small memory device,
• video recording with sound &
• deleting images to free storage space.
• Some can crop images & make other basic image processing.

The optical system works the same way as film cameras,typically by using a lens with a variable diaphragm for focusing light on an image pickup device. Diaphragm & closes to admit the correct amount of light to the imager, as with movies, but the image pickup device is electronic rather than chemical.

Digital cameras are used in numerous products, from handheld computers & mobile phones (called camera phones) to vehicles. Hubble Space Telescope & other astronomical devices are essentially specialised digital cameras.

The Most Common Types of Digital Cameras

Digital compact cameras

Compact cameras are made to be small & portable, & are particularly suitable for casual & “snapshot” use, & are therefore also called point-and-shoot camera.

Bridge Cameras

Bridge is higher-end digital cameras that are physically as well as ergonomically similar to digital SLR Cameras & share with them some advanced features, but also share with compacts the use of a fixed lens as well as a small sensor.

Digital SLRs

Digital single-lens reflex cameras (DSLRs) are digital cameras based on film single-lens reflex cameras (SLR). They derive their name from their unique display system in which a mirror gives light from the lens through a separate optical viewfinder.

Mirror Restless interchangeable lens camera

This is a rare form of combining the large sensor cameras & interchangeable lenses of digital SLRs with live preview systems of compact cameras, either through an electronic viewfinder or rear LCD screen. This is simpler and also more compact than DSLRs due to the removal of the mirror box. Furthermore it typically emulate the handling as well as ergonomics of either DSLRs or compacts.

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