Trashed Schneider xenon 50mm f1.9 m42

[lo3ll]

Most people would have dump this iens in this condition into the rubbish bin! When i received the lens the body totally disfigured with chemical??!! The rear lens cracked!! Focusing and aperture stucked. Spent hours to fix it...body still as horrible as before and the glass still cracked, however got the focusing and aperture to work.





And finally 2 shots taken using the lens

[Oldhand]

Well worth the effort to rescue this lens.
Well done
OH

[luisalegria]

It takes a lot of damage to make a good lens useless.

[JohnBar]

Well worth keeping as an ART lens

plus you may find other lens parts to repair with over time

[jamaeolus]

Well not as trashed as the OP's lens but still requiring some TLC. I got this example on the auction site for not much money since it was sold "as-is". Listed flaws were sluggish aperture blades , oil on blades, also dinged filter threads, and coating damage. Turns out this last was nearly imperceptible, and the glass is near impeccable for 60ish year old lens. It came apart easily. Taking both front a rear elements out exposed the blades from both sides. I swabbed with lens paper to get the worst of the oil off first then rinsed with 70% isopropyl, just a small amount 3ml? Half a tsp or so.. Swabbed again. I worked the aperture mecnasim back and forth numerous times, swabbed rinsed, repeat. It takes longer to write than to do! For final go I swabbed and swabbed working aperture until it appeared dry. Set it aside for several hours to be sure all the alcohol was evaporated. I took that time to improve the appearance of the filter threads. It had already been pulled out to the point it took a filter. But much too far! Fortunately I had an old chromed brass filter housing that fit. Screwed that in and tapped gently with a wooden peg to return to near round.
Closed

[papasito]

This 1967/1968 xenon was made for Edixa, but with the current schneider formula.

I have the QBM mount one. Great lens.

All the xenon 50/1,9-2 versions are the same lens?

[calvin83]

[papasito]

Thank you Calvin83.

The QBM has serie number 12.xxx.xxx (near 1972) the calculation should be changed

[jamaeolus]

Great lens that is generally available for small money. You can frequently get the Retina DKL version for 35-50 dollars in excellent condition. Watch the sale on ebay of the Retina Instamatic Reflex.

[calvin83]

I have tried 3 different Xenon 50/1.9: a early zebra one with Exakta mount, early Retina version with 0.9m MFD and late Retina version with 0.6m MFD. I will prefer the last one. My friend told me the F1.8 QBM version is even better.