Sequence 1: test using AF assistant confirmation to ensured "In focus" no af micro-adjustment and start lens on close distance then turn focusing ring to infinity direction until the AF assistant signal sound beef and green confirm dot appear.
the sequence start from aperture f/1.4 to f/5.6 with one time focus at f/1.4 the rest remain same focus point (no re-focus).
@f2.8 the sharpness focus move near to the intend focus point
@f4.0 the sharpness focus move a bit behind the intend focus point
@f5.6 the sharpness focus area move to around 10mm behind the intend focus point
Conclusion on Sequence 1, @wide aperture f1.4 the AF confirmation not exactly to the focusing point, but because of focus shift effect the exact focus sharpness area moving sequences when changing the aperture to f5.6.
But the sharpness still workable from f2.8 and smaller. The focusing confirmation at aperture f1.4 to f2.0 may be need compensated, wait for the next sequence.
But the sharpness still workable from f2.8 and smaller. The focusing confirmation at aperture f1.4 to f2.0 may be need compensated, wait for the next sequence.
