Posted: Sun Jan 20, 2019 4:03 pm Post subject: Carl Zeiss Jena Flektogon 2,8/35 aperture setting |
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fdlenses wrote:
Fellow lens restorers,
I am currently cleaning a Carl Zeiss Jena Flektogon 2,8 35 (serial number in the 470xxxx range).
I noticed that at f/2.8 the aperture blades do not entirely retract. At the f/2.8 setting the aperture opening is 12.5 mm, at f/16 it is approx. 2 mm. That seems to make sense for the given focal length.
But I could set the slotted ring which drives the aperture blades off by one slot. This would make the blades entirely retract at f/2.8. Obviously, this also changes the smallest aperture opening: It would measure approx. 6 mm.
Does anyone have a known good Flektogon 2,8 35 at hand and can verify if the aperture blades do or do not retract entirely?
Thank you!
Dirk |