Best autofocus setting for Sigma lenses?

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Blood N Guts Murphy
Blood N Guts Murphy Regular Member • Posts: 244
Best autofocus setting for Sigma lenses?

I recall something along the line of the Sigma trio focusing badly at certain apertures.  I have just got an A6400 and wasn't blown away with the focusing (set to auto) with the 56mm f1.4.  Should I leave it on continuous autofocus for best results? I like shooting at f1.4 mostly, but obviously need to stop down when 2 people are in the shot.

I also have the 18-50mm f2.8 and 19mm f2.8 (I believe the latter only works with single AF), I want the 30mm f1.4 too, but as it is older I wonder if focus will not be reliable for me as wedding guest next week.

Many thanks.

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