View single post by jk
 Posted: Tue Aug 21st, 2018 04:37
jk



Joined: Sun Apr 1st, 2012
Location: Carthew, Cornwall, United Kingdom
Posts: 6829
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With mirrorless it is more critical (depending on the AF method in the camera) to have the AF spot over the point of interest for sharpest focus.
That is a mirrorless learning. DSLRs potentially are the same but it 'seems' less critical.

In my testing if you use AF-S and single central point on a mirrorless and DSLR then the Mirrorless with AF point centred on point of interest yields a sharp picture 'every' time.
If you do central AF point and focus and recompose then your critical sharp images drops to 50-80%. Big difference!
DSLRs are different autofocus mechanism to mirrprless but even they are improved by this method of focusing from mirrorless.
Obviously it slows down your rate of working. Also it works best with static subjects. But that is why there are AF-C and AF-S modes and autofocus settings!



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