"A" wrote in message
...

If you shoot tall buildings at 17mm on digital (with 1.6 crop factor), you
still get distorted pics just like 17mm lenses on 35mm film cameras.

I don't believe it. Can you post some pictures to prove it? Take a picture
with a 17mm lens on a digital camera, and take an equivalent picture with a
28mm lens on a film camera. Then post both images side by side and show us
why you think they're so different.