Conclusions
1/ The sharpest aperture varies with different type of lens, make and model.
2/ It is not the smallest or the largest aperture. It is in the middle.
3/ It varies with the distance of the subject to the lens/camera.
1/ Decide which mode is most appropriate: Aperture, Speed/Time or Auto.
2/ Use the tripod.
3/ Use remote trigger.
Andrew Le sưu tầm