What does megapixel mean?

A pixel is a little square that makes up the image on your computer screen. For example, your computer's 17" monitor has a resolution of 1280 pixels wide by 1024 pixels tall. A digital camera's CCD can only capture so many of these pixels, which are then stored in memory, and later transferred to your computer.If a camera can capture at a resolution of 1280 x 1024 (just like the above monitor), which is a little over 1,300,000 pixels (finding out the total pixels by multiply 1280 x 1024). T ...

What are SLR digital cameras?

In an SLR (Single Lens Reflex) camera, the user is seeing exactly what the camera is seeing through a series of prisms and mirrors. This becomes important for more advanced photographers. In SLR cameras, it is also possible to interchange lenses and keep the lenses from other cameras. Many digital SLR cameras also offer higher resolution since they are aimed at the pros. The disadvantages of SLR digital cameras are the significantly higher costs, bigger size and weight, and a small delay before ...

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