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Thread: Schneider III Center Filter Issue

  1. #1

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    Schneider III Center Filter Issue

    Hi everybody, I have a question regarding Schneider III center filter.

    I have two Schneider III center filter. One purchased from eBay, another one is a gift from my friend. But I notice that both filter are not the same.

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    Both filters are marked as Schneider III center filter MC. Filter B is darker than filter A. Filter B is heavier than filter A. The characters of filter B is bold style on the outside rim.

    The filter center metering reading of filter B is -2 stops, but filter A is -1.2 stops.

    I really have no idea which one is correct to use for my Schneider 65mm lens on Linhof 612. Please give me some advises. Thank you!

  2. #2
    Ed Freniere
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    Re: Schneider III Center Filter Issue

    Schneider made center filters 3 and III for various lenses. See

    https://www.schneideroptics.com/ecom...y.aspx?CID=182

  3. #3

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    Re: Schneider III Center Filter Issue

    Frankly, you don't really need a center filter for 65mm on 6x12. (or even on 4x5 IMNSHO. ;-)

  4. #4
    Jac@stafford.net's Avatar
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    Re: Schneider III Center Filter Issue

    In practice you might find that the each provide the same correction, given that they have different filter factors. Note that the darker one is darker to the very edge, while the lighter is almost clear at the edge.

    Best to try them at the rated filter factor and be happy.

    Second Ed Sawyer's comment.
    .

  5. #5

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    Re: Schneider III Center Filter Issue

    Ed, are you sure? I ask because as I calculate it with a 125 6x12's corners are nearly 2 stops down from the center. That seems a bit much for reversal material. Negatives may be ok.

  6. #6

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    Re: Schneider III Center Filter Issue

    Thx everybody advises!

    The actual is I really need a center filter for my 65mm lens on Linhof 612. Both edges of left and right sides are really under expose compare with negative center area. I'm shooting color transparency film.

    Does anyone have Schneider III center filter to compare with my both filters? Thx

  7. #7

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    Re: Schneider III Center Filter Issue

    Indeed, was talking about negative film, generally.

  8. #8
    Indiana, USA chassis's Avatar
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    Re: Schneider III Center Filter Issue

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    Schneider center filter IIIb used on a Super Angulon 58/5.6 XL. 2 stop filter factor.

  9. #9

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    Re: Schneider III Center Filter Issue

    chassis, the Schneider IIIb center filter has factor 1.5 but not 2 based on https://www.schneideroptics.com/ecom...D=182&IID=1855

    I'm going to do some test shots this weekend. Let's see which is the best one.

  10. #10

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    Re: Schneider III Center Filter Issue

    Quote Originally Posted by jianglinxi View Post
    chassis, the Schneider IIIb center filter has factor 1.5 but not 2 based on https://www.schneideroptics.com/ecom...D=182&IID=1855

    I'm going to do some test shots this weekend. Let's see which is the best one.
    Just remember, for a center filter to work the lens must be stopped down at least 2 stops from wide open.

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