Wich screw-to-bayonet adapter?

[Tor1Amos]

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Got my self a Jupiter 50mm 8-1 screw mount lens, to use with my M8. Need off course a adapter - but wich, and were to get it? I have already spottet that my Uv/Ir filter from the old Summicron 50mm does not fit the Jupiter lens. Anybody know the filter diameter of this lens?

(its a black version from 1991 if it is true that the first two digits of the serial number states the production year)

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[scsambrook]

The Jupiter lens takes the common 40.5mm filter size, and you need a screw/bayonet adapter for 50mm lens. The Leitz adapters are always reliable, as are the Cosina Voigtlander ones. There are lots of Chinese ones available at very low prices, but their quality seems to vary a lot. I have one which is perfect and another whose 39mm thread will not accept either of my Cosina Voigtlander lenses! I would stick to the well known brands.

[Tor1Amos]

The Jupiter lens takes the common 40.5mm filter size, and you need a screw/bayonet adapter for 50mm lens. The Leitz adapters are always reliable, as are the Cosina Voigtlander ones. There are lots of Chinese ones available at very low prices, but their quality seems to vary a lot. I have one which is perfect and another whose 39mm thread will not accept either of my Cosina Voigtlander lenses! I would stick to the well known brands.

 

Thank you. As it seems, It wasnt a lot of the original Leitz available on eBay. Took my chanses on a chinese one. Very cheap.

[daleeman]

I would go for the real Leica adapter. The CV one from camerquest hangs up when I remove the lens from thes M8. Mr. Gandy said the CV are made better than the Leica ones but I beg to differ. Certainly many CV adapters may be fine, but I did not want to risk meM8 on a cheaper misfitting adapter. Tiny metal shavings from the adapter scraping as it came off concerns me. "just my experience with it"

 

Lee

[fotoism]

If you are planning on marking the mount with 6 bit coding, choose one without the cut-off. Quite a few ( including the Leitz and early CV ones ) have the cut-off where the codes are supposed to be and the sensor strip on the camera is half-exposed. That won't work well as far as code reading is concerned.

 

But if you do not plan on coding your lens then that does not matter.

[Islandmike]

I'm not sure what brand my LTM adaptor is, in use on a Nokton 50/1.5 I bought slightly used, so maybe it's a Voigtlander.

 

The thing I find most useful is that it has an inset area running all round the mount at exactly the right place to press a white self adhesive label into the channel, then cut neatly with a surgical scalpel or sharp craft knife.

 

After pressing down well to ensure adhesion, the coding may then be added to the white paper with a Sharpie pen and the help of Bo's brilliant home made template and Carsten's great list of codes.

 

Because the paper is inset and won't be rubbed off by attaching and removing the lens, it should last a long time.

 

The photo below should illustrate the point. By the way - it also illustrates the dust that I have now noticed and removed, before it gets into the M8 body!

 

Cheers

 

Mike