I agree, there is something not right here. TDP is my favorite review site by the way. I find Bryan´s tests to be very thorough, objective and informative.infared said:Viggo...I think that there is something wrong with that comparison at The Digital Picture (which I regard as a very reliable source)....so..when you click over on the sigma arrow..notice that the WHOLE frame gets a least a stop darker...not just the edges. There is something amiss there. If the centers do not stay at the same brightness for each lens the comparison in no good. Clearly there is a problem there. I only have the sigma or I would compare them myself...but I am only noticing (slight) vignetting when the lens is wide open...not really bothersome..certainly nothing like the portrayal there. hmmmm....this warrants further investigation...I will look for a third source.
Mathew at Light & Matter (the U-Tube video I referenced) seems like a very responsible guy), he is slightly Sigma biased (maybe) or he is just reporting the facts fairly.
I got the 35 Art before that test was published. From my use I could see some vignetting wide open, but it was not bothering me at all. Having read Bryan´s review, I was very surprised to see how much vignetting he measured. So I did as good a verification as I could on my own. It is of course highly subjective, but I don´t believe I could see much more than 2 stops in the corners. Definitely not as much as Bryan measured.
I actually posted a question on one of the threads, asking if there could be individual differences. I don´t believe there could be though. Nobody replied, so if someone with more knowledge on the subject reads this, I can repeat the question.
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