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Sonnar 3.5/135 how to take out front glass?
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PostPosted: Sat Jun 27, 2020 6:50 am    Post subject: Sonnar 3.5/135 how to take out front glass? Reply with quote

Hi, I have Sonnar 3.5/135 lens. Behind front glass element are some fungus. How can I take out that front glass for cleaning?
Firs I screw out ring with letters, second I screw out ring that hold front glass. Then I turn lens but front glass do not come out.
Is it glued there or something? Please help.



PostPosted: Sat Jun 27, 2020 11:33 am    Post subject: Reply with quote

hi,
it is not glued and should come out. just try to move it carefully around by holding the lens upside down.
greetings


PostPosted: Sat Jun 27, 2020 12:48 pm    Post subject: Reply with quote

Tap the lens on the rear side, so it falls off, be careful.


PostPosted: Sat Jun 27, 2020 12:55 pm    Post subject: Reply with quote

It may be in tight, use a vinyl suction cup. My favorite is from a toy "sun catcher" that goes on the inside of a window. If it is really tough, use some lens cleaner on the glass then put the suction cup on it. Tapping - be very careful, I had a front element break after coming out. Do not pry at the corners, that will break the glass.


PostPosted: Sat Jun 27, 2020 1:52 pm    Post subject: Reply with quote

Well, yeah, try to make a soft place for element to fall onto.... lol