I do not understand what visible and sharp focus mean.
The instruction says....
When viewing the crossed hairs and the top hair is in sharp focus, is the other hair visible or in sharp focus at the following total magnification...?
The instruction says....
When viewing the crossed hairs and the top hair is in sharp focus, is the other hair visible or in sharp focus at the following total magnification...?
0 answers
1 answer
1 answer
1 answer