Author Topic: Rollei HFT 50/1.8 fungus?  (Read 644 times)

MEPER

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Rollei HFT 50/1.8 fungus?
« on: January 17, 2021, 17:00:55 »
Some time ago I observed a bit of "dust" in an old Rollei lens. There has just been a thread about an issue like this. I have attached some images of the issue.
Is that fungus?

It seems to be at the rear element or the outside of the next element. So my next question is if it is easy to take rear element out and clean the surface and the surface of next element.
I have attache an image which shows the rear of the lens and there are two rings which can be removed by a spanner wrench. I assume that it is the inner ring that has to be removed to take out the rear element?
Is it that "easy"? :-) 

It seems lens is a 7 element in 6 groups design and rear element is a single element that can be removed from the rear?