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View Full Version : canon 17-40L vs Sigma 15mm diagonal fisheye


ReF
04-05-2005, 08:16 PM
i got my sigma 15mm diagonal fisheye a day early so i did a few tests

the sigma starts at f2.8 while the canon at f4.0 so obviously i couldn't compare shots at f2.8. the shots were taken tripod mounted, indoors, with the self timer. i moved to tripod back and forth so that images appear the same size at 100%. i left out the sigma shot at f5.6 because i totally screwed it up. all shots taken in Aperture priority mode.
ReF
04-05-2005, 08:19 PM
OUCH! these images were uncompressed but they look awful after uploading. i guess things didn't turn out as well as i had hoped.
ReF
04-05-2005, 08:27 PM
well, even if you can't see the differences in sharpness that well hopefully you can see the difference in the color of the sky. the two on the left were taked with the canon and the one on the right is with the sigma. the one on the far left is taken with the HOYA SMC protective UV filter on. these shots would display better if i linked them to another site right? i don't have a site right now to put them on though... anybody know of a way around the display quality issue?
Bluedog
04-05-2005, 08:36 PM
Yep use imageshack and its FREE: http://imageshack.us/index.php I'd like to see the results.

And use the "Direct link to image" to post your image without pop ups or banner ads.
ReF
04-05-2005, 08:49 PM
alright, thanks! i'll look into that later as i have to be offline for the next 4 hours for a particular reason. btw, is it free for only a certain amount of time?
Bluedog
04-05-2005, 08:58 PM
Free forever. I've used it for over a year now, you just have to resize so the image isn't over 1024 kilobytes.
jamison55
04-06-2005, 04:38 AM
i got my sigma 15mm diagonal fisheye a day early so i did a few tests

the sigma starts at f2.8 while the canon at f4.0 so obviously i couldn't compare shots at f2.8. the shots were taken tripod mounted, indoors, with the self timer. i moved to tripod back and forth so that images appear the same size at 100%. i left out the sigma shot at f5.6 because i totally screwed it up. all shots taken in Aperture priority mode.

I can definitely see the difference. Looks like that 15mm is a keeper...
ReF
04-06-2005, 04:14 PM
Bluedog: i uploaded the image at the imageshack site but it kinda looks the same as above.

http://img105.exs.cx/img105/8052/sigmatest11bg.jpg

jamison55: wow, you have a good eye. if i hadn't already seen the results in full resolution, i'm not sure i'd be able to tell much from the pictures above.
yeah, this lens is a keeper for sure. :D i was expecting it to be less than the 17-40L even though the sigma is a prime, but i was really surprised by the results.