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How to open up a Pentacon 300mm f4?
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PostPosted: Mon Jan 10, 2011 11:08 am    Post subject: How to open up a Pentacon 300mm f4? Reply with quote
I would like to remove some dust and dirt inside. Have anyone experience on how to open this lens? Surprised


PostPosted: Mon Jan 10, 2011 4:09 pm    Post subject: Reply with quote
Here is the job for a 135. Just have a look to see how Pentacons are made.
http://forum.manualfocus.org/viewtopic.php?id=195

Have dust and dirt any incidence on the Image Quality ?
If not, it's better not to open it.

Maybe the 300 f4 is simplier. I don't know.
I have some lenses I just have to unscrew the back from the front.


PostPosted: Mon Jan 10, 2011 7:31 pm    Post subject: Reply with quote
Olivier wrote:
Here is the job for a 135. Just have a look to see how Pentacons are made.
http://forum.manualfocus.org/viewtopic.php?id=195

Have dust and dirt any incidence on the Image Quality ?
If not, it's better not to open it.

Maybe the 300 f4 is simplier. I don't know.
I have some lenses I just have to unscrew the back from the front.


Thank you for the link Wink Might be helpful!

There are a few lose (rubber?) pieces inside that I would love to remove Very Happy

- Lars
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