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01-04-2016, 03:11 PM   #1
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A* long telephotos: Drop-In Filter Holders

I know that all the 35mm A* ED telephotos (300, 400, 600, 1200) use the same 49mm internal filter holder. The 645 A* telephoto (600mm/f5.6) also uses a 49mm drop-in filter holder. My question is: Are these drop-in holders interchangeable between the 35mm and 645 A* lenses?

01-04-2016, 03:25 PM   #2
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Join Date: Jun 2011
Location: Ile de France
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Hi, i can answer yes btw FA*300/2.8 and FA*600/4 ; so i guess it is the same btw former series.
Btw, your former A*135/1.8 is still in good hands, waiting for the K-1
01-05-2016, 06:57 AM   #3
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Original Poster
Thank you for the quick reply. I need to add more information. I have a Pentax 645 A* 49mm drop-in filter holder with a mounted circular polarizing filter. Will this CPL filter holder fit the 35mm telephoto lenses 300mm/f2.8, 400mm/f2.8, etc.?

Glad to know that the A* 135mm/f1.8 is still in good hands.

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