16-35 II or 14 II. Best of Canon's lenses in this range. You could also consider the Nikkor 14-24G with an adapter. However, my copy of the 16-35 II is quite good, and therefore I don't see a need for this lens.
If you do a good search I'm sure you can come up with similar responses in previous posts. But to help...
Do you mean less than 20mm effective FOV? or less than 20mm before the conversion? Your best zoom choices are probably going to be a 17-40, or either 16-35 version. But that will give you an effective FOV of about 21mm. If you need wider than that there is the 14mm prime. I seem to recall a new ultra wide zoom coming out by either Sigma or Tamron soon, like a 12-24 or something. Not sure on the quality though.
17-40mm L. Fantastic on a 1.3x crop body as you won't see the slightly less sharp corners, and at the wide end that still gives you 21mm equivalent which is pretty wide.
I'm picking up a Tokina 11-16 2.8 today, for my 5D. "What? For a 5D?" you say.. Few friends of mine say it works beautifully as a 16mm 2.8 on full frame. I'll report back in a few days. Would be equally good on a 1d, if it works well at all. Can't beat the price...
p.1 #10 · Best Wide Angle Prime or Zoom for 1DMKII
John P. wrote:
I need to add a very wide angle lens to my arsenal that's less than 20mm...either Prime or Zoom. Any suggestions?
I shoot the Tokina 10-17, 11-16 and 12-24 on my Mark III and 40D and they all work great.
You loose a bit of range on the Mark III (since all 3 are all designed for the 1.6 sensor) but all 3 still perform great on either camera.
Unlike the EF-S lenses that won't mount on anything but a 1.6 sensor camera Tokina mounts on full frame, 1.3 and 1.6.
