5D3 + 50L + Outer AF points = Much Sadness

Started Dec 1, 2012 | Discussions thread
VivaLasVegas Senior Member • Posts: 1,210
Re: How would one focus and recompose from those limited AF points.

DFPanno wrote:

That's a long swing of the lens if the subject is on either end of the frame.

Yes it is a long swing, focus and recompose at f1.2 can be tricky, that is why people don't do it. The trick for me is to focus(f1.8-1.2) on something midway between your main subject and final composition, it works most of the time for me. The swing and final composition distance to the camera will be different, that is why it is tricky. Just try my midway tactic, maybe it'll work for you. Remember humans unconsciously move back and forth +/- 1/8th an inch, so with you and your human subject, both of you could be off by 1/4th of an inch and at f1.2, that is more than enough to put the eyes OOF.

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