M42 lenses on a Nikon F body.... with infinity focus

Nodda Duma said:

Yes although it's not the lens maker formula you are using. Use the Gaussian equation for a thin lens which maps the object distance, z, to image distance, z'.

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Btw I recommend a Field Guide to Geometric Optics by John Grievenkamp...my copy is from when I took his geometric optics course. Handy for looking up fundamental optical calculations.

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