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02-11-2017, 04:45 PM   #1
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Join Date: Sep 2015
Posts: 14
have opened for cleaning a Panagor 90mm Macro, but still struggel with front lens

The reason I have opened the macro is much dust between front lens and aperture.
It was easy and pretty clear to dismantle the outer parts, but now I see four screws from the backside, but have not any idea to access them. How can I remove the part in front of the front lens?
Thanks for any advice

First photos show the place of the screws.

Both lenses - Elicar and Panagor
Panagor 90mm f2.8 Macro PMC Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database
Elicar V-HQ Medical Macro MC 90mm f/2.5 Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database

The last two photos show the differences of the impact of dust on contrast.
Panagor ISO100 2.8 1/40
Elicar ISO100 2.4 1/50 (A-Position)
I got both lenses in the late 80s but I always use the Elicar as a small everyday tele in my backbag on alpinism and trekking

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90mm, 90mm 1:2.8 macro, database, elicar, front, k-mount, lens, lenses, macro, panagor, panagor 90mm, pentax lens, review, slr lens
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