Reverse adapter Nikon F-mount to 52mm

This is a reverse or retro adapter to mount a normal lens in reverse position for macro photography. The adapter mounts to a nikon f bayonet mount on the camera side and a 52mm filter thread on the lens.

Printed on an elegoo mars resin printer. FDM machines probably won't be able to print the finely pitched threads. It might be possible to replace the thread section by a glued on UV filter or something similar.

Two versions are provided, the 35mm adapter is longer, so works like an additional extension tube and provided further magnification. This however comes at the cost of a tiny focus depth. The other adapter has a spacing of 13mm.

I have also uploaded the stl file for the Nikon bayonet mount, as it took me a lot of tries to get the dimensions right maybe this helps somebody for their own projects.

Print Settings

Printer:

Elegoo Mars

Rafts:

Yes

Supports:

Yes

Notes:

This print is quite difficult, as the object is large by SLA standards and suction forces are huge.

My approach was to print it upright, with the thread side down, using lots and lots of heavy supports. Printing directly on the build plate will not work, as the elephants foot will make the thread unusable.

Printing in the other direction, with the thread facing upwards might give a better thread profile, however i could not get it to work, as the layer with an increased diameter after the bayonet lugs is very prone to layer separation.

For print settings, the lift speed should be decreased as far as possible, to around 30-50. A slight overexposure is also preferably, but not too much, else the threads wont work.

Category: Camera