P7700: the ribbed lens ring - what is it about?

Started Oct 5, 2012 | Questions thread
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SamD New Member • Posts: 12
Re: P7700: the ribbed lens ring - what is it about?

mallbuedel wrote:

The ribbed ring covers a thread (male) where extension tubes with a female thread for wide angle or tele lenses can be screwed on.

I guess this is about 57 mm thread. Has anyone figured out how this thread can be used?

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