sandro Posted January 19, 2020 Share #1 Posted January 19, 2020 Advertisement (gone after registration) Recently I received some camera's and lenses from a friend. So I was wondering if it is possible to use the lenses that belong to the Pentax Spotmatic (with M42 thread) on a Leica R or a Leica M, with the focussing system functioning. Are there adapters? Thanks, Lex Quote Link to post Share on other sites More sharing options...
Advertisement Posted January 19, 2020 Posted January 19, 2020 Hi sandro, Take a look here M42 lenses on Leica R and M. I'm sure you'll find what you were looking for!
pgk Posted January 19, 2020 Share #2 Posted January 19, 2020 (edited) No, not if you want to retain infinity focus. On Pentax 42mm thread this requires 45.46mm but the Leica R bayonet is 47mm from the film plane so you will not get infinity focus (https://en.wikipedia.org/wiki/Flange_focal_distance). On M yes but no RF coupling - see response below. Edited January 19, 2020 by pgk Quote Link to post Share on other sites More sharing options...
a.noctilux Posted January 19, 2020 Share #3 Posted January 19, 2020 (edited) On Leica R, only for close-up photos with adapter 42mm to R (without glass). On M mount camera depending on the body type with adapter 42mm to M : - no rangefinder focus coupling so scale focus - or liveview ( LV or EVF) on digital M I use the Monochrom MM1 without liveview and other film Ms before with some SLR lenses + adapters to M . My prefered is the Fish-Eye Super-Takumar 17mm with colored filters built-in, nothing like this in Leitz/Leica lenses. Like here ... Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! used with Leitz own 42mm to M adapter #22232 previously for ciné Leicina Special Edited January 19, 2020 by a.noctilux 1 Quote Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! used with Leitz own 42mm to M adapter #22232 previously for ciné Leicina Special ' data-webShareUrl='https://www.l-camera-forum.com/topic/305495-m42-lenses-on-leica-r-and-m/?do=findComment&comment=3894896'>More sharing options...
caissa Posted January 19, 2020 Share #4 Posted January 19, 2020 You can use them on the SL and SL2. The SL is currently very affordable. Quote Link to post Share on other sites More sharing options...
sandro Posted January 19, 2020 Author Share #5 Posted January 19, 2020 Thanks for your explaining replies. I am mainly using Leica M film camera's, and occasionally a Leica R4 with the Macro-Elmarit 60mm. Without infinity and withour rf focussing it doesn't make much sense to me to try to use the M42 lenses. So those M42 lenses won't be used then. Thanks, Lex Quote Link to post Share on other sites More sharing options...
Al Brown Posted September 5, 2021 Share #6 Posted September 5, 2021 (edited) Two questions: 1. If you adapt the M42 lens to M39 (LTM) and with another adapter the M39 (LTM) combo to M, would the RF work and would you retain infinity? 2. Is there someone who adapts M42 lenses to Leica M RF with coupling? If so, who/where? Thanks. Edited September 5, 2021 by Al Brown Quote Link to post Share on other sites More sharing options...
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