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 p.2 #15 · Original 50L f1.2L thread (edited) | |
Evidently, I am one of the fortunate few who has a 50/1.2 that is not a "defective product." When I carefully test my 50/1.2, it exhibits focus shift (inherent, it seems, for fast 50s), but only at close ranges, and the depth of field never shifts beyond the focus point. In real world shooting, the focus shift is indiscernible. Otherwise, focus is accurate and relatively fast (perhaps slightly slower than my 24-105, but much faster than my 85/1.2 II), although the 50/1.2 is more sluggish and prone to hunting in low light than I expected. (This is on a 1Ds II.) In terms of sharpness, my 50/1.2 is about 1/2 stop less sharp than my 85/1.2 until about f/2-f/2.8. In other words, my 50/1.2 is about as sharp at f/1.6 as my 85/1.2 is at f/1.2. Beginning about f/2, those two lenses are, for all practical purposes, equally sharp. Setting sharpness aside, the image quality between my 85/1.2 and my 50/1.2 is very, very similar -- and that's a very good thing. So, overall, I am quite happy with my 50/1.2 -- the focus shift does not affect me, and while I slightly prefer the IQ of my 85, I more greatly prefer the angle of view of my 50.
By the way, I was one of those who corresponded last year with Chuck Westfall about the 50/1.2, and received the same response as has been reported. I followed up this year with various Canon service centers to see if there was any truth to the rumor that there has been a silent fix to the 50/1.2 (mine is an early model). If there has been a silent fix, the service centers are not disclosing it.
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