Hi!
This is the crop marked in red in the upper edge, not a corner.
I know nothing about the methodology of aligning the camera used in this test (whether it was done carefully with a spirit-level and if MLU was used etc) but my point was simply that I find it rather depressing to be forced to test several lenses every time when bying a lens. I mean it should be the manufacturer's task to test the lens before attaching the price tag! It won't help Canon in the long run if customers start to associate the L with Lemon instead of Luxury.
Cheers,
J
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No it's not. The crop I'm referring to and which you have repeated in the above post does not appear anywhere in the overview. The area highlighted with a red square is different.
I agree it's a PITA to have to test lenses before you buy. Furthermore, once you start doing that and you discover how much variability there can be, you become fearful of buying another lens ever without testing it first.
The last lens I bought without testing was a Canon 50/1.4, in Bangkok. When I got back to Australia and one day compared it with my Canon 50/1.8, a much cheaper and lighter lens, I found it wasn't as sharp. It's supposed to be marginally sharper.
I've been advocating for years a policy where ever lens is sold with an individual, real MTF chart (as opposed to a theoretical one) as a part of standardised quality control.
But no-one listens to me .