As near as I can figure the lens is made for an EXAKTA camera, (I could be wrong). I have no personal knowledge of the type of lens mount that you describe but I don't think that YS refers to Yashica... You may be able to find more information at this web site. http://www.ihagee.org/ Now I feel that I've done my good deed for the day. At 04:57 PM 5/29/2001 +0000, you wrote: >I was given an Accura Diamatic YS 135mm/f2.8 screwmount >lens by a co-worker who had sold me a Yashica TL-Electro- >X. He was under the impression this screwmount lens >would fit the Yashica which takes the M-42 >(Pentax/standard?) mount lens. This lens, while being >the same size, seems to have one to many threads on the >lens and therefore does not properly fit the Yashica. > >On the bottom of the lens it says 'YS-AUTO'. I am >inclined to believe it might be for a later Yashica >screwmount with Auto functions but can find no info on >the Accura lenses. > >If anyone might know any info on these lenses including >what mount they might be, I'd be most happy. I will >probably try to trade for a lens I can use or sell and >purchase one I can use. > >Thanks for any info. > >-Mark >- >This message is from the Pentax-Discuss Mail List. To unsubscribe, >go to http://www.pdml.net and follow the directions. Don't forget to >visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .