Optiphot EPI: CF PL 2.5X projection to Canon EF sensor

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Optiphot EPI: CF PL 2.5X projection to Canon EF sensor

Since Nikon CF objectives are nominally free of chromatic aberrations,
these CF photo relay lenses are candidates for use in other microscopes
which employ eyepieces without corrections.
Nikon made several revisions to CF PL optics.
@Scarodactyl compares several CF PL and afocal configurations in these EPI images.

With male M42-T2 coupling ring, M42-EOS AF confirm adapter and bellows,
about 6cm spacing wanted for Canon EF sensor parfocality:

(98mm camera flange to chimney top)

… implemented by helicoid and extension tube:

17-31mm M42 helicoid + 31mm EF extension tube

Magnification to 35mm sensor nearly matches parfocal eyepiece:

Canon 6D parfocal CF PL 2.5X … centering needs attention..

CFWN 10x/20 by iPhone Se
CFWN 10x/20 by afocal iPhone Se

As expected, APS-C sensor crops/magnifies:
Canon 90D parfocal CF PL 2.5X

maintained by blekenbleu