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Thread: Filter thread size for 8-1/4" Red Dot Artar

  1. #1
    Do or do not. There is no try.
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    Filter thread size for 8-1/4" Red Dot Artar

    Putting this out there for posterity.

    Yesterday I discovered that my 8-1/4" Red Dot Artar (s/n 8169xx) accepts 40mm filters. I'm not sure if the threading is exactly the same as the filter's 40mm x 0.5mm but filters from my Canon LTM kit screw in all the way and seem tight.

    40mm is a pretty uncommon size but for some reason SRB Photographic in England make a 40-49 step-up ring (now on order). From there it's easy to get to wherever you'd like, in my case 52mm.

  2. #2

    Join Date
    Dec 2018
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    Re: Filter thread size for 8-1/4" Red Dot Artar

    Steve,
    Thanks for posting this.
    Mine (8249xx) measures 40mm as well.
    Useful info...thanks!

  3. #3
    Do or do not. There is no try.
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    Re: Filter thread size for 8-1/4" Red Dot Artar

    Just another tidbit…

    A 42mm Series VI slip-on adapter is also a perfect fit. I use series filters with my 120 folders so I now have two options. The series filter path is marginally smaller and lighter (four of them fit into a “large” B+W filter case) if I’m carrying just the one lens, otherwise I’ll probably stick with the SRB adapter and another step-up to 52mm.

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