06-24-2014, 08:38 AM
Quote:Sigma has considerably more variance than canon, at least. 35L varied 7.32% across tested copies, and 35A varied 12.86%... over 50% more. However, the average 35A is indeed better than the average 35L... though less than people on the internet would want you to think.
<a class="bbc_url" href="http://imgur.com/a/FbH74">http://imgur.com/a/FbH74</a>
In another post you told about how old the Canon versions are. If you think about, maybe it would be a good thing to re-check those tolerances after Sigma will have produced these lenses a a long as Canon has. Tighter tolerances are a lot about manufacturing experience. The "oldest" Sigma Art lens is nearly two years young...