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Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.

Explore the world of vintage lenses through repair notes, real test shots, and detailed archive threads packed with images.
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CZJ DDR Flektogon MC 2.4/35
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Posted: Sat Aug 01, 2009 2:04 pm
Post subject: CZJ DDR Flektogon MC 2.4/35
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Posted: Sat Aug 01, 2009 2:04 pm
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I'm amazed by this lens' sharpness.

The roll used was an Ilford FP4+, negatives scanned with the Canon CanoScan 8400f





(click on the images to see bigger versions)


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Posted: Sat Aug 01, 2009 3:33 pm
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Posted: Sat Aug 01, 2009 3:33 pm
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This seems one of the lenses that will convince me to pay for such performance. Love that rose


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Posted: Sat Aug 01, 2009 6:04 pm
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Posted: Sat Aug 01, 2009 6:04 pm
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Amazing indeed.


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Posted: Sat Aug 01, 2009 6:37 pm
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Posted: Sat Aug 01, 2009 6:37 pm
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Wonderful lens indeed. Nice samples!


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Posted: Sat Aug 01, 2009 6:38 pm
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Posted: Sat Aug 01, 2009 6:38 pm
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If you have a good copy, it's a real gem.
But not all copies are good ones... Sad


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Posted: Sat Aug 01, 2009 6:43 pm
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Posted: Sat Aug 01, 2009 6:43 pm
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LucisPictor wrote:
If you have a good copy, it's a real gem.
But not all copies are good ones... Sad



I can confirm, but "bad" ones are not too bad at all. You can sell it without any problem and still hunting for better one.


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Posted: Sun Aug 02, 2009 3:16 pm
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Posted: Sun Aug 02, 2009 3:16 pm
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Mine seems to be a good copy, except for a bit of oil on the blades (almost none). I'm curious.. what's the problem of having oil on the blades?


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Posted: Sun Aug 02, 2009 3:33 pm
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Posted: Sun Aug 02, 2009 3:33 pm
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Love that rose shot!


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Posted: Mon Aug 03, 2009 12:04 am
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Posted: Mon Aug 03, 2009 12:04 am
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star0nfire wrote:
Mine seems to be a good copy, except for a bit of oil on the blades (almost none). I'm curious.. what's the problem of having oil on the blades?

It's often not a problem on a preset lens, or even an auto stop-down lens you're using manually, because you're stopping it down at a slow-ish speed; but on an auto stop-down lens it stops down quickly and the blades can stick then get bent. This is because the blades are sliding over one another and have a bit of stiction related to their surface area. They were usually designed to run dry. Sometimes, once you've stopped it down it won't open back up again.
Also, this old oil can lose its oily properties and act more like a glue, if you're unlucky. The only solution is to strip and clean.


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Posted: Mon Aug 03, 2009 1:04 am
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Posted: Mon Aug 03, 2009 1:04 am
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LucisPictor wrote:
If you have a good copy, it's a real gem.
But not all copies are good ones... Sad


I don't know if my is a good copy or not. I have not used it enough. Embarassed


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Posted: Mon Aug 03, 2009 3:14 am
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Posted: Mon Aug 03, 2009 3:14 am
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Farside wrote:
star0nfire wrote:
Mine seems to be a good copy, except for a bit of oil on the blades (almost none). I'm curious.. what's the problem of having oil on the blades?

It's often not a problem on a preset lens, or even an auto stop-down lens you're using manually, because you're stopping it down at a slow-ish speed; but on an auto stop-down lens it stops down quickly and the blades can stick then get bent. This is because the blades are sliding over one another and have a bit of stiction related to their surface area. They were usually designed to run dry. Sometimes, once you've stopped it down it won't open back up again.
Also, this old oil can lose its oily properties and act more like a glue, if you're unlucky. The only solution is to strip and clean.


I see. At least for now it doesn't seem to be a problem (even when shooting it on auto mode), but the oil is almost non-existant. I might consider cleaning it in the future, though. Thanks for the explanation! Smile
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