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Thread: Singh-Ray Variable Neutral Density Filter

  1. #1
    Saratoga, CA
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    Singh-Ray Variable Neutral Density Filter

    Does anyone know how there are made? Is it just two polarized filters stacked together?

    Gale

  2. #2
    Foamer
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    Re: Singh-Ray Variable Neutral Density Filter

    I think that's what they are. I bought a similar variable ND from B&H a couple of months ago and that's all it was. I ended up sending it back because it was hard to know how much density there was at any setting to figure exposure. My SHen Hao doesn't have TTL.


    Kent in SD
    Qui sedes ad dexteram Patris,
    miserere nobis.

  3. #3
    Big Negs Rock!
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    Re: Singh-Ray Variable Neutral Density Filter

    The variable Polas also are color specific and pretty amazing.
    Mark Woods

    Large Format B&W
    Cinematography Mentor at the American Film Institute
    Past President of the Pasadena Society of Artists
    Director of Photography
    Pasadena, CA
    www.markwoods.com

  4. #4
    msk2193's Avatar
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    Re: Singh-Ray Variable Neutral Density Filter

    Bob, one is a circular polarizer and the other is a liner polarizer.
    The Vari-n-Duo is my favorite filter!

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  6. #6

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    Re: Singh-Ray Variable Neutral Density Filter

    In the case of the Heliopan Vario which goes from 0.3 to 1.8 density (1 to 6.6 stops) they are two of the new High Transmission Heliopan circular pols mounted back to back in a very thin mount.

  7. #7
    funkadelic
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    Re: Singh-Ray Variable Neutral Density Filter

    Quote Originally Posted by Bob Salomon - HP Marketing View Post
    In the case of the Heliopan Vario which goes from 0.3 to 1.8 density (1 to 6.6 stops) they are two of the new High Transmission Heliopan circular pols mounted back to back in a very thin mount.
    I was considering one of these variable ND filters to reduce weight and clutter in the bag. As I think about it, I come to one important question: By doing this variable filtering with two polarizers, isn't this combination filter actually modifying the light instead of just reducing it's throughput? It would seem the same for Singh Ray, as well as Heliopan if they're both using polarizers.

    Chris

  8. #8

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    Re: Singh-Ray Variable Neutral Density Filter

    Quote Originally Posted by cdholden View Post
    I was considering one of these variable ND filters to reduce weight and clutter in the bag. As I think about it, I come to one important question: By doing this variable filtering with two polarizers, isn't this combination filter actually modifying the light instead of just reducing it's throughput? It would seem the same for Singh Ray, as well as Heliopan if they're both using polarizers.

    Chris
    First, the Heliopan in 67 to 82mm goes from 0.3 to 1.8 which is 1 to 1.8 stops. Sorry for the confusion.

    No it only changes the density. If you screw it into a polarizer then you can increase the density by 1 stop (with the Heliopan High Transmission Circ Pol) or 1 2/3rd stops with other types of polarizers. The amount of density change with a Heliopan Vario ND is restricted to the working range as the filter is hard stopped at either end of the density range.

  9. #9
    Daniel Stone's Avatar
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    Re: Singh-Ray Variable Neutral Density Filter

    bob, I think you had it right the 1st time:

    .3 llll .6 llll .9 llll 1.2 llll 1.5 llll 1.8 markings on filter
    1 llll 2 llll 3 llll 4 llll 5 llll 6 # stops of light removed

    if I'm wrong, please correct me

    -Dan

  10. #10

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    Re: Singh-Ray Variable Neutral Density Filter

    Quote Originally Posted by DanielStone View Post
    bob, I think you had it right the 1st time:

    .3 llll .6 llll .9 llll 1.2 llll 1.5 llll 1.8 markings on filter
    1 llll 2 llll 3 llll 4 llll 5 llll 6 # stops of light removed

    if I'm wrong, please correct me

    -Dan
    When we originally introduced them they went from 0.3 to 2.0 which is 1 to 6.6 stops. They will now be 0.3 to 1.8 which is 1 to 6 stops. This only is true for the 67 to 82mm versions. 52 to 62mm are still 0.3 to 2.0.

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