Canon 70-300 IS USM (non-L) AF question

Started Apr 28, 2012 | Discussions thread
bronxbombers
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Re: Canon 70-300 IS USM (non-L) AF question
In reply to bronxbombers, Apr 30, 2012

100% crops, VERY careful test, center frame:
70-200 f/4 IS + 1.4x TC III 280mm wide open:

70-300L 300mm wide open:

tamron 70-300 vc 300mm wide open:

200% crops, VERY careful test, center frame:
70-200 f/4 IS+1.4x TC III 280mm wide open:

70-300L 300mm wide open:

tamron 70-300 vc 300mm wide open:

(if you save images and then flip between them differences jump out more)

70-300L focuses 2x as fast as those two (and about the same as the 70-200 f/4 IS bare)

5D2+70-300L+f/5.6 100% crop center frame:

a few soccer with 7D/5D2+70-300L:

a few soccer with 20D+70-300 non-L:

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