did you remove the metal slide out hood (that covers the lens setting rings)? Did you use the calculation based on the pupil location or the diameter of the front element?
I have a GSW690-iii and recently purchased a 67-77mm step up ring and a 77mm extension tube 24mm long (that just barely fits inside the in-built hood) to screw in 77mm filters more easily and mount square/rectangular filter holder. Have not yet tried this setup but by my calculations it should not vignette.
Your conical one with the holes in it seems like the holes will let in light?
I would be concerned about light reflecting off the shiny conical surfaces unless you add flocking?
Fun to see your modifications on a camera that doesn't have many options for modification.
I have the first model, GSW 690, which does not have a slide out lens hood. That was the reason why I made this one.
I did not "calculate" anything, In the drawing I sketched the diameter and angle of the lens, constructed the diameter of the hood accordingly and made a testprint.
After that I mounted the lenshood and looked at the flattest possible angle through the open lens with
opened leafblades and cant see the edge of the lenshood - so it should not vignet.
Because of the holes: some time ago I designed a lenshood for a 35mm / f1,8 Nikkor rangefinder. The guy who asked for it wanted a version with holes. So I also made one with holes for the Fuji.
And of course, depending on the angle of the lightsource the light will fall into the lenshood.
I can also design the cylindrical without holes if ya want to ;-)
aaand yes, no matter what kind of filament you use, painting the inside with a flat black colour is necessary.
Do you have any suggestions for 3D printed parts for the Fuji??
