Jupiter 12 35mm 2.8 on a Leica M6 body

J

javimm

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Hi.
I have a Jupiter 12, 35 mm 2.8 lens, black version, no cyrllic characters, that I plan to use on my M6 classic. I have ordered a Voigtlander adapter for it, so it should mount correctly. I haven't received the adapter yet. Doing some reading, I've come to the conclusion that it can be mounted safely, and the rear element won't touch the curtains.
I'd like to know if the rear element will block the meter diode, and affect the metering readings. Does anybody has some experience with this lens and a M6 and have any metering issues?. The rear elemet being so big, it seems that the light coming from the white point in the curtains to the diode will be blocked.

Thank you,
Javier.
 
I don't know about the meter but I can easily mount my J12 on my M2, so mounting it on the M6 should indeed be no problem.
 
Javier

I not plan on using the meter, if you fit the lens with adapter and flip the back up you will see how little the diode will see...

Noel
 
Javier,

Some M6+J12 users say that you can add 1 stop more exposure to whatever the camera's meter is giving for correct exposures.

The large protruding barrel will block the path of the meter cell's 'sight' which is pointed towards the silver spot on one of the shutter blinds.

The same, I think, happens with the RD-1s. Its metering cell is located on the floor of the shutter crate, and is aimed so that it can read the light reflected off the grey blinds of one of the curtains. The J-12 too, blocks this path. But even with the lens in place, metering is still possible, though accuracy is compromised. +1 stop often works- "often" since there are times when the exposure is really off even with this compensation.

The camera would even work on AE mode with the J-12. In this mode, the dial should be set at +1, and even at this setting, exposures are correct only about 85% of the time.

Jay
 
I'll compare the reading from the handheld meter and the one from the camera, to see how they difere. I'll try that +1 trick too.

Thanks.
 
Not sure how different the fittings and the meter reading are from the MP but I use that lens on my MP with no problems. I shot only B&W though so maybe my lack of any compensation was hard to see in the results. I'm careful though with wide angle lenses to compensate for sky influencing the meter so perhaps that helped too.
 
Javier, if you have another lens or can borrow one for ten minutes, you might compare meter readings through that with readings through the J-12.
 
No, I don't have access to another lens. This is going to be my main lens for a while. I'll try to compare with my handheld meter and to the readings my Canon 350D gives. I'm going to shoot B&W only. I haven't ever touched a MP, whish I could ;). I think I'll have to make some experimentation.
 
Just a thought - will the meter reading change with different focus? I'm just thinking that as you focus closer, the lens will move further from the shutter and may block less of the path to the meter cell?
 
Alan

You will be metering off scatter from the film near to frame edge off the glossy black of the lens barrall, so there is unlikely to be a big difference.

Noel
 
I tried the metering on M6..

I tried the metering on M6..

I tried the metering on my M6 with a black jupiter-12. The reading seems to vary by about 1 stop when moving from 1 meter to infinity in my case.
 
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