July 30, 2025
Description
This model is a redesign made to be mount on a large photographic lens. The lens is a Rodenstock Apo-Ronar 1070mm. Its diameter is 10.8cm.
A magnetic ring (green) is screwed to the metal ring of the lens. That way the shutter can be mount an unmounted fast and secure (There are magnets on both pieces). The 5 leafs (blue) open and close just behind the lens. I needed to filter the color temperature so I added a filter holder (yellow). Lastly, there are two barn doors (orangish) that allows the light not to flow every where in the camera but mostly on the paper.
EDIT (V3): Magnetic rings weren't a success. Not strong enough. I made 2 new pieces that forms the Snap Rings (blue + Green). Blue side is glued on the body bottom and has three male clips (and a naughty text). The green side is now magnets less and is profiled to snap fit the other part (see close up pic). This last part is bolted to the lens.
EDIT (V4): I broke some printed prieces and that bothered me because I had to change more than I really needed. That made me realise glued parts were not a resilient way of making, so I redesigned the whole project in order to get rid of glue and favor screwed parts. I choose to use heat press insert over nut imprints. I try to use only M3 for simplicity but some tiny part required M2. Barn doors are still maintained with M4 nuts though.
Supports are needed on:
Warnings:
External ressources :
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This is all work in progress, I'll upload images as things goes on.
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A huge THANK YOU ! to @gmerien and @jamesskelton !!
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License:
Creative Commons — Attribution — Noncommercial