June 2013: Lenses

To the menu today: a Schneider Edixa-Xenon 1.9/50mm and a Jena MC Pancolar 1.8/50mm.
For the Xenon: fungus on lenses.
For the Pancolar: clicks of the aperture control not working, and replacing the grease of the helical.

I started with the Xenon: the fungi are (as often) on the lenses located on either side of the diaphragm. So I unscrewed the back optical block, cleaned (alcohol) with a cotton swab, wiped and finished with a microfiber cloth to remove dust.

The fungi are well gone. Perfect!

Disassembly of the Pancolar
I unstuck the ball of the aperture ring, altered its spring.
With Japanese 50mm lenses like my Takumars, you can easily remove the optical part to avoid damage, here it's not possible, so I protect the lenses before wiping the old grease.

I also removed the focusing ring for regreasing.

Greasing and distribution of the grease.

Checking the focusing. It's right at first try! a little experience and a lot of luck?

Reassembly.

Finished!