People looking for a M42 Lens to Micro M 4/3 Adapter should also take a look on that one. I found some image samples on flickr.com.
This adapter is with 7mm FOCUSING HELICOID from 13.5 – 20.5 MM. Someone of you tested the adapter?
You can find that lens on Ebay (click here)
5 Responses
Forgive my ignorance, but what will this do that a normal adapter won’t? Is this to allow the use of even weirder lenses, eg enlarger & bellows lenses?
@Charles: The adapter lets you focus fixed focus lenses. Check out the flickr fotos and notice many of them are missing focus rings. fwiw, i had to read the ebay listing to figure that out tho : )
@Charles – the focusing helicoid adapter allows you to vary the focal distance – i.e. it telescopes in and out. For this particular adapter, the range is 7mm. Basically it allows you to have focus capability with old lenses that don’t otherwise have a focus ring.
@Spanky
This is for M42 lenses — and M42 lenses all have a M42 flange focal distance, even those with fix-focus (otherwise they wouldn’t work on their original bodies), so they will all focus with a regular M42 adapter.
What is interesting with this kind of adapter is that it allows a closer focus distance than the original minimal focus distance of the lens. It is of particular interest for old lenses that have a minimal focus distance farther than modern lenses, or to do macro/proxy (the same way than extension tubes).
@kuyf
You’re not entirely correct. This is for M42 threads, which is not limited to M42 lenses. M42 is one of the most common threads for camera gear, which means it can be used and adapted easily for a whole range of lenses. In fact, if you follow the flickr link posted with the article you’ll see what I mean, and that’s only scratching the surface. Such a focusing helicoid works wonders in adapting very old lens elements to work with digital camera bodies.