ewadler
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Upload & Sell: On
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CVickery wrote:
Interesting. I previously owned a single coat version of the 21/3.5 and although it was a nice sharp lens, it did show a significant drop in performance at the extreme edges. My impression (based on memory, not a test), is that the f2 version has better performance at the extreme edges.
Hmmm...I remember someone else making the same claim. I did do a test, but it wasn't very scientific. I will see if I can dig it up, or do another test, but it showed almost equal performance between the two. At first I could not tell a difference between the two, but I did notice slightly weaker corners from the f2. That could be due to the effort to optimize for close focusing, or maybe it was just sample variation, but like I said, my findings have been echoed by the very few other opinions I have been able to find on the subject, other than you of course. I think Hubsand at 16-9.net found them their performance to be about the same.
So, who knows, would like to hear other's opinions on the subject as well. At the moment there aren't enough data points to make a concrete claim either way.
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too late. Sold it about 3 months ago to Cal. 