Why Do SLR Lenses Not Have More Powerful Zoom Capability?
by tonyny77 - 9/25/06 2:20 PM
I'm really ignorant about optics. With that said, I'm wondering why the lenses for SLR cameras (both film and digital) seem to not have the same zoom capability you can easily find in many video cameras and less costly digital still cameras.
If I had to guess, I'd say it may be because the lenses would be prohibitively large for the amount of light the SLR lenses ''pull in'' or because of the size of the film-plane image they yield.
Am I close? I hope there's an optics-savvy forum reader who can answer.