Best superwide prime for 1.6 crops...

[Plasmodium]

I've read Andy's recs about the 5D/Zeiss 21 combo for landscapes. What about for 1.6 crops? Over the next year or so I'll probably decide between the 5D and the 20D's successor, and the one thing I really like about the 1.6 crop effect is that it avoids the light fall-off and edge softness that one can see on 35mm and full frame. So if I go for the 20D's successor, what would you suggest as the best prime out there that is wider than, say, 18mm? My Tokina 12-24 is fine, but I'd love some unimpeachable prime at the wider end of that. Thanks!

[gtc]

so many varying reports about the super wide zooms such as the tamron and sigmas-i want a superwide prime ,say 10 or 15mm but all that seems to be out there at that focal length are fisheyes,not rectalinear primes.if anyone can point us in the right direction i would be happy

I've read Andy's recs about the 5D/Zeiss 21 combo for landscapes. What about for 1.6 crops? Over the next year or so I'll probably decide between the 5D and the 20D's successor, and the one thing I really like about the 1.6 crop effect is that it avoids the light fall-off and edge softness that one can see on 35mm and full frame. So if I go for the 20D's successor, what would you suggest as the best prime out there that is wider than, say, 18mm? My Tokina 12-24 is fine, but I'd love some unimpeachable prime at the wider end of that. Thanks!

[Plasmodium]

Yeah, Canon makes a $1700 14mm f/2.8L prime, but I haven't read the most glowing things about it. I think the hordes of L-groupies over on FM forums expect a superwide prime to perform as well corner to corner as the longer primes.

[Osprey Whisperer]

I know a fellow shooter (Nikonian type) that swears by his Sigma 14mm f/3.5. (it's no longer made...so you'll have to pick one up used). Sigma's 14mm f/2.8 is the current version and supposedly the same quality lens but faster:dunno :scratch This guy says his lens is tack sharp and little to no CA/flair/very little linear distortion. I've hear this lens has very minor softness wide open at extreme edges though. Lens supposedly has good color/contrast also :huh(take with several grains of salt...as I'm sure it has it's flaws like all lenses) Might do a google search for reviews. I have not looked into this lens too deeply , yet. I wish Canon had a nice ultra wide prime that kicked butt for a decent price. <snicker snicker>


MM