Originally posted by Class A Yes, but if you calibrate with these parameters, you may introduce problems at other settings.
, My recommendation is to calibrate with parameters that are typical for how you use a particular lens. My
AF adjustment hints contain some more tips.
Class A,
Unless you constantly shoot the same subject with the same lens, in the same conditions, at the same distance, with the same lighting, it really doesn't matter if the edges are not calibrated as mentioned in your hints. Photography is mostly about opportunities in catching that special moment in time. If you can predict what you will shoot at the exact time and conditions in the future, that would be the solution. However, this won't happen on this planet.
If your lens is calibrated at the closest distance with the maximum aperture,
surely you can take a great clear image at a greater distance with a smaller aperture. Furthermore, in this digital age, you can see what you have just shot...adjust accordingly until you get what is acceptable. You may still miss stat special moment in time, but as you get used to your lenses, you'll become a champion at it.
Focusing charts, regardless of which one you use, will not give repeatable results for zoom lenses. It really only works for prime lenses or at a pre-determined focal length on a telephoto.
The best advice; yes, calibrate your lenses if you really need to, but you will become a better photographer by taking a lot of pictures and get intimately knowledgeable with all of your equipment. Stop measurbating and go shoot pictures.
This response is in pure friendship, I do not put down any of the charts out there.