輕便數碼相機 和 單鏡數碼相機 的原理分別

Principle is the same as "pin hole camera". However, lenses in coverging the image onto CCD or CMOS sensor element.

Differences:
1. Most DSLR (單鏡數碼相機) cannot use LCD for viewing the object to be taken.
2. All DSLR cannot shoot movie.
3. 輕便數碼相機 does not support "B" shutter that means you cannot control the expsoure time manually.

補充有數碼單鏡機可以用 lcd 取景的:
如 Olymplus E330, Panasonic L1 及 Leica Digilux 3, 但拍片就唔得啦