Alley in Pisa, Italy

by Lars Kotthoff

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Sigma is now offering services to change the lens mount, you can read more about it on the "Change Your Mount" page. The only problem is that they offer it for a limited number of lenses and 24/2.8 isn't in that list. Your best bet would be to get FD - EF adapter with optical element inside, so you would be able to retain infinity focus, although none of ...


I figured it out, the photos have to be shot in RAW. I was editing trying to edit via jpg that was shot on the 70d with the sigma 18-35. Thanks for you help @ElendilTheTall


You can either wait for Adobe to add it in an update, or if you can't wait you can download the Lens Profile Downloader. If the lens profile isn't available yet you can make your own with the Lens Profile Creator. Both are available to download from Adobe here.


If you want to compare the Tamron SP AF 17-50mm f/2.8 XR Di II LD IF to the Sigma 17-50mm f/2.8 EX DC OS HSM, the image quality comparison is available here. Roll over the images to see the difference, check for acuteness (perceived sharpness), chromatic aberration, vignetting. I tried to summarize my opinion, but you should check all the combination of ...


Nothing first person, but's tests and reviews are well regarded. Here's the relevant links: To summarize: Build quality of both is good but not fantastic Neither is a great lens to manual focus ...

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