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Old 27-06-2011, 05:47 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 10,903
Hi, Marc

If you mean SMC Pentax-M 200mm F4, it looks like 52mm according to this website:

http://www.pentaxforums.com/lensrevi...duct=75&cat=27

Cheers

Dennis
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