Fast lenses, and High ISO

Started Jul 18, 2014 | Discussions thread
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Re: Fast lenses, and High ISO
In reply to Chikoo, Jul 18, 2014

Chikoo wrote:

1. AF is done with the lens wide open: faster lenses AF much better in poor light.


Interestingly, I have had more focus misses with the lens wide open.

That's because the results of either a missed focus or BF/FF mis-adjustment are usually much more obvious with shallow DOF.


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