Sigma 30 is a nice lens for the price, has nice contrast, pretty sharp in the center and a nice focal length on a crop body, but the 35L sings on the 5D, which your profile says you have, since you can't really use the Sigma on the 5D, the 35L seems to makes more sense.
Grantland wrote:
sigma is a nice alternative if money is an important consideration.
however, it is not in the same league at canon's 35L.
I'm not sure that that's really fair. I've not used the 35L but every direct comparison review I have read has said that the Sigma is about as sharp and not far off in terms of overall IQ.
Of course if the OP is on FF then the queston is moot.
i have both and keep all (sigma for 1.6x and canon for FF). I dont want to part with sigma because of its size, as far as sharpness, its almost hard to tell the difference between both.
here's the comparison pics
original photo (from sigma 30)
comparison
35L have bigger size of 100% crop picture due to 5mm difference (only changed the lens & didn't move the tripod during the test)
