Leica Minolta 50/1.4 MC Mount adapted to RF Coupled M-Mount

BrianS

Super Moderator
Apr 3, 2013
124
This lens was made for the Minolta SRT-101. In the 1976 Pop Photo tests of 32 lenses, it had the best center-sharp performance of SLR lenses. This one has perfect glass, was $40 at a Photorama camera show. Adapted to M-Mount using a Foto-Diox adapter ($35), the leg from a tripod, and a retaining ring from an old lens.

Wide-Open, F1.4 on the M8.





This lens is known for being center-sharp. A great match for the M8.
 

BrianS

Super Moderator
Apr 3, 2013
124


I use a pipe-cutter on the tubular leg of an old tripod leg and a retaining ring from a Russian lens to make the RF Cam. It must be polished down to the correct length. The retaining ring went into the inside of this one t build of the thickness for the cam follower of the lens.
 

Frank Starling

Veteran
Jul 22, 2010
43
It is amazing that you can do these things, Brian, and I love the character of that Minolta. The leaf photo and the f/4 shot two down from it are both great!
 

barnacksdog

New Member
Dec 16, 2013
3
Hi Brian!

I'm new to this site and haven't really had the chance to browse in depth.
As mentioned above, it'a amazing that you can do these things. Do you also modify other lenses for rf coupling?

Hector
 

asiafish

All-Pro
Aug 9, 2013
123
Bakersfield, CA
Andrew
That does not look like an easy job, but many Minolta Rokkor lenses are worth the effort. Before I got into Leica I used Minolta film cameras and adapter Rokkor lenses to the Sony NEX 7.

Your lens' predecessor, the MC Rokkor 58mm f/1.4 was outstanding, while the MC Rokkor 135mm f/2.8 (the older version, PF I think) had the most delicious bokeh of any 135mm lens I've ever used, better even than the Leica 135mm f/2.8 Elmarit-R. The MC Rokkor 24mm f/2.8 was in fact the very same lens Leitz licensed to make the 24mm f/2.8 Elmarit-R, and I believe a few of the R series zooms were badge-engineered Minoltas as well.
 

BrianS

Super Moderator
Apr 3, 2013
124
This lens has become a favorite on the M8, I prefer it over the Pentax 50/1.4 and Canon FL mount 50/1.4- also converted to M-Mount. All are excellent lenses, and "must-haves" for anyone with a mirrorless camera, including the M240. The Minolta is center-sharp, which matches the M8 crop factor quite well.

Wide-Open, fall colors in the neighborhood.

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Fall Colors

This lens maintains RF coupling to 0.65m.

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Fall Colors

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Fall Colors
 

Raid

All-Pro
Dec 15, 2011
123
The 50/1.4 is one of the most versatile lenses, and having it in ltm or M mount would be very good, Brian. I have the Takumar 50/1.4 in M mount. The Minolta seems to be a great choice too.
 

asiafish

All-Pro
Aug 9, 2013
123
Bakersfield, CA
Andrew
Brian,

Let me know if you ever decide to sell it. I love Minoltas, but don't see myself owning any cameras normally capable of using them for a while.
 

BrianS

Super Moderator
Apr 3, 2013
124
I will most likely keep this lens with the M8- this lens is center-sharp, and matches the crop factor well. I need to come up with a repeatable way of making these cams. It would not be hard for a machine shop to do a replacement cowling for the rear element, and have some sort of an adjustment for calibrating the cam to a camera- like a ring screwed into the extension, with a set screw.

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Fall Colors

Total cost of this lens with the adapter was under $75. I picked up an MD 50/1.4 for $15, had some fungus that cleaned out. Winter is coming, cold/wet weekends are good for lens hacking.
 

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