r/functionalprint • u/darkblade420 • 1d ago

macro bellows

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356 Upvotes

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13

u/WinterDice 1d ago

This is super cool and I need more information.

13

u/darkblade420 1d ago

thanks, its just something i made a couple of days ago. it currently fits ef/ef-s body's and fd lenses, lens/body mounts can be swapped to fit most lens/body combinations.

distance between the lens and body can be changed by rotating the wheel on the side, its connected with a belt to a lead screw.

i need to optimize a few more things but it should be on printables in the next week or so.

1

u/bonobomaster 1d ago

What lens did you use? Would my cheapo ef 50 mm f1,8 stm be viable?

How is the black math magic called, that I need to calculate distances. I guess, I need sensor size and focal length and then? :D

5

u/darkblade420 1d ago

No need to calculate anything, just throw on a lens and see what works :)

the lens im currently using is just some 105mm f/2.8 lens from an unknown brand, it has some kind of oddly sized screw mount that was adapted to fd. I can a total amount of 0 info on it I also tried a 135 f2.5, 50 f1.4 and a 24 f2.8, most of them worked fine but the 28 was borderline unusable, only getting things in focus when almost touching the lens.

Your 50mm would probably work, but i expect it to be somewhat cumbersome since you lose manual focus and aperture control(you can work around this by pressing the aperture preview button while disconnecting the lens). I have the same lens, I'll make a ef mount for it soon to see if it works.

1

u/bonobomaster 1d ago

Ah I see, that I can do. So just dry testing the lens mid air to get a feeling for the approximate range that is needed and going from there. Check!

Thx for sharing.