Reddit reviews Fotasy 15-26mm M42 to M42 Lens Macro Helicord Adapter, 42mm Focusing Helicoid Extention Tube, 15mm to 26mm, 11mm Max Movement, fits M42 Screw Mount Lens
We found 1 Reddit comments about Fotasy 15-26mm M42 to M42 Lens Macro Helicord Adapter, 42mm Focusing Helicoid Extention Tube, 15mm to 26mm, 11mm Max Movement, fits M42 Screw Mount Lens. Here are the top ones, ranked by their Reddit score.
Made of light-weight aluminum alloyMale thread: 42mm; female thread: 42mmThe Length of this Helicoid Tube 15mm(Min), 26mm(Max), it offers a total of 11mm Movement Distance for Lens Focusing."Work with M42 screw mount lenses, such as Carl Zeiss, Pentax takumer lens. If you want to use 39mm enlarger lens with this focusing helicoid, you need an additional 39mm-42mm Adapter. "Every useful for lenses without focus ring. It could be used as macro barrel, and offers fine focus control for macro photography.
Simple soft bellows not my camera build but it shows the idea. I know that's also a view camera/studio camera and you want a point and shoot still if your only going to do the 90mm you don't need a great deal of travel soft bellows would work. You would just have to find the right support for the lens.
Thinking point and shoot your lens is so wide shooting 4x5 or larger you could almost do a simple fixed focus camera.
There is a handmade large format flicker group look through the picture pool and in there are some good camera builds. From things that are ruff but functional to elegant ideas.
I would totally be about salvage mechanisms from 35mm or rangefinder lenses. Find a simple lens with a great take apart guide, buy a copy with fungus/missing elements, salvage a helical.
Good luck. Show us what you make and have fun.
Edit: are you married to having a lensboard? You could do Copal 0 to M42 adapter then M42 + helicoid to a mirrorless style camera. Mount to the body using a cut up rear lens cap as a receptacle. I might worry the longer helical would block the edges of the light cone inside especially for such a wide lens. I might worry is too many connectors.
Edit 2: Copal 0 to just M42 helicoid?