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Thread: Need help with IR filter

  1. #1

    Default Need help with IR filter

    Which size or what type of IR filter should I get for my lens

    I am currently using a sigma 30mm f1.4 and a tamron 17-50mm f2.8

    Advice and help appreciated!!

  2. #2

    Default Re: Need help with IR filter

    The size is based on the thread diameter of the lens. It's printed right on the front of the lens.

    Hint:
    http://images.cambridgeincolour.com/...s_diameter.png

    As for type, up to you, though the Hoya IR72 are popular.
    Alpha

  3. #3

    Default Re: Need help with IR filter

    But would it be better to shoot in IR with the tamron lens or the sigma lens that I have?

  4. #4
    Senior Member
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    Default

    Quote Originally Posted by Rinzuki
    But would it be better to shoot in IR with the tamron lens or the sigma lens that I have?
    Just buy the IR filter based on the bigger diameter tween the 2 lenses, then buy a $10 step up ring. This will allows you to try the filter on both lenses.
    Equipment: D800|D700|11-16|28-75|105 Micro VR|50 F1.4G|85 F1.8G
    Through the Lens of Cowseye

  5. #5

    Default Re: Need help with IR filter

    Quote Originally Posted by Rinzuki View Post
    But would it be better to shoot in IR with the tamron lens or the sigma lens that I have?
    Doesn't really matter for either... You would need to do your own testing to see which is more susceptible to hotspots. The IR subforum is a better place to ask.
    Alpha

  6. #6
    Member technoglitz87's Avatar
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    Apr 2011
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    Default Re: Need help with IR filter

    Have shot with the tamron before, not realli any hotspots. Doable but pp is tedious.


    it's 67mm for the tamron, not sure of the 30 1.4
    D7000/ MB-D11/ SB-700/ Tamron 17-50/ Sirui T1204x

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