Digital Zoom

Just what is digital zoom?

DO they just bin pixels? Does the exposure just use the central pixels and then spread them out? I understand it does not improve resolution. Just what is "digital zoom" for?

Alex

Some cameras use what is called interpolation to get resolution levels higher than what the CCD chip is capapble of. It is like binning but the camera tries to guess what color and brightness the generated pixel should be.

I am sure that Photoshop can zoom in and smooth an image better than any digital camera given enough skill. I like the camcorders that say 4x optical and 30x digital zoom. When you zoom in all the way the view is like 16x16, utterly worthless.

Hi,

digi Zoom is interpolation, directly in the camera. The only use is to give that feature to people who do not have a computer with grafix software which usually can do that job much better.

Digi Zoom is sometime helpful for the direct printing from camera to printer.

Cheers
Tom