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Originally Posted by sameerrao
50mm is a normal lens and not wide angle by any means. I think wide angle starts with 10mm and goes to approximately 36mm.
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I agree on the first part, but not on the wide-angle-part. Everything under 50mm is considered wide-angle (so 36mm on APS-C is correct) but goes to about 28mm (17mm on APS-C). Everything wider would be an ultra-wide-angle.
Indeed we discussed about wide-angles in TT's topic, but I'll summarize it here. 8)
Wide-angle:
- 17-40 f/4 L... pro: sharp, L, affordable - con: f/4
- 16-35 f/2.8 L... pro: sharp, L, f/2.8 - con: expensive
- 17-35 f/2.8 L... pro: sharp, L, f/2.8, affordable - con: can't be bought new anymore, only 2nd hand
For all those lenses I have to say that their range isn't perfect, 35/40mm on APS-C can be a little too short for some shots.
UWA:
- Sigma 10-20... pro: 10mm, cheap - con: less sharp, f/5.6 @ 20mm
- Tokina 12-24... pro: sharp, affordable, fixed f/4 - con: 12mm, CA
- Canon 10-22... pro: L-like-glass, 10mm, sharp, fast - con: expensive
These are more of a specialty lens, I wouldn't do a complete shoot with one for example.