Question #ad7a4

1 Answer
Oct 10, 2017

The optical properties are not "linear".

Explanation:

The change in magnification may or may not have physically changed the focal point. If it has moved, it may look like the resolution is worse, but the subject just needs to be put back into the correct point.
SOME "details" in the field will still be both magnified and in the focal plane, resulting in a clear image.