Carl Zeiss Jena electric MC S 135mm F3.5 M42

[edumad]

Since no is wanting to trade this, I'm selling it here.
(click on pics for bigger size)

Carl Zeiss Jena electric MC S 135mm F3.5 M42 SN: 10443710
with front and back caps.

IMGP5420 by eduardodourado, on Flickr

IMGP5426 by eduardodourado, on Flickr IMGP5452 by eduardodourado, on Flickr
Mechanics:
Focus rings is smooth
Aperture clicks and moves smoothly
A/M switch operates well with positive feedback.
Aperture blades move freely and are oil free:
IMGP5423 by eduardodourado, on Flickr

No fungus that I can see. Little dust inside (see photo).
IMGP5429 by eduardodourado, on Flickr
Front element is scratched in 3 places (1 jagged etch and 2 pits) depicted bellow.
IMGP5428 by eduardodourado, on Flickr
The dust and scratches do not affect the performance of this lens


I had the automatic aperture pin disengaged. I have now engaged it myself. I tested the lens after the "surgery".
This is me focusing on the text " 5 insider tips" - click for full size
IMGP5438 by eduardodourado, on Flickr
IMGP5450 by eduardodourado, on Flickr

All is working, but with the aperture on F3.5 the blades do not form a perfect circle, only if you push it a tad more do they make it. There seems to be less than 1mm play in terms of rotation observed both at F22 and F3.5. The consequence is than in A mode the blades seem to not retreat to a complete circle, but to F3.5.
My Industar 50mm exhibits the same behavior on the aperture ring, whereas the SMC-A 50mm does not.

I have looked thoroughly inside and there seems to be no fault, however please be advised of this.

In this video I show the mechanical operation, hopefully showing also this phenomena.

30 Euros plus postage.

[edumad]

Price updated upon advice.

[edumad]

Sold.