Just to keep the math simple, if I have an objective on a 200mm tube lens that requires 1µm steps for optimum focus stacking, what is the optimum step size if I put it on a 100mm tube lens instead?
I ask because from practical experience I suspect it could be more than 2µm, but that doesn't seem right. What aren't I getting here?
What does shorter tube lens do to focus step size?
Moderators: rjlittlefield, ChrisR, Chris S., Pau
Beats - absorb... http://photomacrography.net/forum/viewt ... 606#126606 !
I think I had to read it 3 times to get the point. But it's very useful as a guide. My version of Rik's sheet has grown.
I think I had to read it 3 times to get the point. But it's very useful as a guide. My version of Rik's sheet has grown.
Chris R
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