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11-15-2011, 01:43 PM   #1
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K 500mm f4.5

Does this lens need the internal 52mm filter to remain optically correct? I have heard the tamron adaptall 2 300mm & 400mm lenses need the 43mm rear filter to perform correctly and I am wondering if the same is the case with the K 500mm?

11-15-2011, 01:57 PM   #2
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QuoteOriginally posted by littledrawe Quote
Does this lens need the internal 52mm filter to remain optically correct? I have heard the tamron adaptall 2 300mm & 400mm lenses need the 43mm rear filter to perform correctly and I am wondering if the same is the case with the K 500mm?
This lens has a rear filter mount for regular colour and b&w filters. It's not like some of the A series telephotos that require the dedicated Pentax filter in the optical path.

Phil.
11-15-2011, 05:37 PM   #3
Ole
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The lens can be used with no filter mounted.
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