Voigtlander 35mm 1.7 (ltm) front group?

[newfilm]

Hey guys, some time ago someone posted a diagram of the Voigtlander 35mm 1.7 (ltm) diagram to compare with the new M mount version, I can't seems to find it anywhere anymore, and I can't find any reference to the old LTM version on Voigtlander site as well.

Anyway, I hope the diagram would help me understand does it worth while to take out the lens element for cleaning as it seems to be a bit foggy while shine through white light.

If anyone who disassembled or clean its glass before drop me some hint? I know the name ring can be unscrew, what then? does the front group also unscrew as single unit or it can be separate for cleaning purposes?

many thanks!

 

[Erik van Straten]

Yes, that was me! I never took the lens apart. Maybe you'll find someting useful here: Repair Forum

Erik.

 

[Mr_Flibble]

I recall condensation will settle on the surfaces between the front group and the one behind it on the LTM 35mm f/1.7 Ultron. Unscrewing the front group as a whole will let you clean off the haze/condensation without a problem. No need to remove the individual elements.

I don't remember exactly if the aperture ring needs to come off at all (It had to, last time when I removed the front-end wobble), but if you have to, be careful not to lose the click-stop ball-bearing and spring.

 

[newfilm]

Ahhhh! Thanks for the diagram, also the good hint about the where might the haze be. now I just need to wait until weekend and get myself some uninterrupted time to tackle this slowly 🙂