ROSS XPRES 3inch lens on Leica M camera?

[jaques]

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I have been cleaning out some old lenses- and selling them off- and one has caught my eye and got me wondering. Could I mount this 3 Inch Ross Xpres lens on a Leica body? If I did what focal length would it be? I don't even know what type of camera the lens is native to - I could find no other just like it- I assume it is a large format camera?

 

Then I saw on ebay these Ross to Leica lens conversions. Wow: pricey!

 

Is there any reason such a lens may be desirable? At that kind of price?

 

And if I wanted to get my own Ross converted- and hints on who might do such work and what it might cost?

 

Please convince me not to sell this lens and to have it converted!

 

 

 

 

 

 

[jaques]

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[jaapv]

 Some Ross lenses were made in LTM mount. In that case the conversion should be easy through a standard LTM adapter, provided the register distance is correct. I suppose the ridiculous price on the Internet is because of an addition of a RF cam (and even then...  ) which is not needed for the 240.

[Orient XI]

The focal length would be 76.2mm. To be worthwhile it would have to perform much better than a Ross Xpres enlarging lens I owned in the 1950's.

[pgk]

I used to have a Ross lens in a 'home made' conversion to LTM. It worked fairly well but the lens itself was no great performer so it wasn't really worth the effort of building it - I suspected that a model engineer had made the conversion which was workmanlike rather than elegant (and perhaps built at a time when buying an equivalent Leica lens would have been unaffordable. I'm not sure that yours is a lens that I would bother using on a modern digital camera myself - 3" f/3.5 isn't really a high enough specification to make it worth while IMO.