For crop sensor the Canon 10-22 EF lens. If shooting full frame, you probably would be good with like the 17-40L
You didn't say (and I'm surprised that nobody asked) if you are shooting with a crop body or a full frame body....because the 10-22mm isn't compatible with full frame cameras like the 5D etc. (although you can modify it to work, but it will vignette)
If you are using full frame (or APS-H or even 35mm film) then I'd think that the sharpest wide angle zoom lens would be the 16-35mm F2.8 L II.
I don't know much about the few wide angle primes.
I do own the Canon EF-S 10-22mm, and it is a fantastic lens. But like most/all wide angle lenses, the optical performance falls off dramatically as you get to the corners of the frame...especially at the wide end of the zoom.
If you want a sharp ultra-wide angle lens, I hear the tokina 11-16mm f/2.8 can't be beat. It's also a great low light lens..
Not to argue, because I am a huge fan of Tokina lenses, and agree that the low light option is nice to have....but the Canon 10-22 beats all of the competitors in every sharpness test I have ever read on wide angles for canon crop sensors.
If you are using full frame (or APS-H or even 35mm film) then I'd think that the sharpest wide angle zoom lens would be the 16-35mm F2.8 L II.
I don't know much about the few wide angle primes.
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The best way to decide would be to take you body and driver to a good camera shop and try them for yourself and pick the one that performs the best for you. If you are close to Abes's of Maine you might give them a try.
Welcome to Abes of Maine
They have a showroom, but they are in New Jersey.
Our address is:
Abe's of Maine
Raritan Center
5 Fernwood Ave
Edison, NJ 08837
For the explanation of why they are Abe's of Maine and are in NJ, there is a history on their website.
Whip me, beat me and take away my charge card. That's like having Sacs of 5th Avenue in Seattle. :mrgreen:
I shoot with the 7d, and I have both the Canon 10-22 and the 16-35L
I really like both lenses a lot. The 16-35L is sharp, focuses more than fast enough, how fast does a wide angle lens need to focus?
But if I had to keep just one of the two lenses with my 7D, without a doubt it would be the 10-22. There really is a difference on a crop between the 16mm and 10mm. Also, the color, clarity and perspective of the lens is something to behold when shooting landscape and architecture. The price is right with the 10-22 as well. I was going to buy the sigma, but the associate at B&H told me to try the 10-22 they recommend it there. I cannot be happier with this lens/camera combo. Did I say it is wicked wide? In case I didn't, it is wicked wide.
...now put the 16-35L on a 5Dmii and that is an out standing combo. I will be shooting with both in a few hours, I am leaving to shoot the sunrise at 4:30am, about 5 hours from now.