Screen dump. Shot at manual focus. Left f/2.8, right f/5.6.
Focus point is on the lower 2 mark.
We can see that the depth of field increases, but also that the focus shifts towards the rear about 2 cm.
The shooting distance was around 1 meter.
I shot two complete aperture ranges. One series focussed on zero, the other on the lower 2 mark.
I made also 4 shots at f/5.6 with autofocus. For two images I put the lens on infinity first and changed to AF to focus. The other two I started on manual at closest range. The ones that started at infinity are better than the other two but still not spot on.
Herb
Oct 30, 2012 at 06:00 AM
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