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Thread: Physical Color Filter with Digital

  1. #1
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    Physical Color Filter with Digital

    In order to better visualize the effect of a particular color filters for a B&W image, digital offers the advantage of being able to preview/review the image at the camera screen at the exposure stage (either before exposure or even the actual digital negative). Consequently, I tried using my old, physical B&W color filters with my iPhone X. The tricolor filters, #25, #58, #47A, resulted in a B&W image with almost no gray tones. Apparently, "strong" physical B&W color filters do not mesh well with the Bayer filter mosaic of the color sensor. However, my preliminary results suggest that light yellow #8 and light yellow-green #11 (for lightening up dark tropical vegetation) work satisfactory, are not available as digital filters (Camera1), and therefore, could be quite useful for general B&W landscape work. My other camera is a CFV-50c Hasselblad digital back, which, unlike my iPhone app, has no digital color filters.

    I wonder what is everyone else’s experiences. Any recommendations or suggestions?

    I assume, achromatic (B&W) cameras/sensors like PhaseOne Achromatic, Leica Monochrom, or certain Huawei smartphones shouldn’t have any issues working with any physical B&W color filters.

    MN
    Last edited by TheDude; 1 Week Ago at 06:19.

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    Re: Physical Color Filter with Digital

    I do indeed have some files from the D800E shot with a deep red filter. I'll see if I can dig them up.


    EDIT: Ok, so I was able to dig up some files. Which one do you think is shot with the Red filter, and which one is not?
    Attached Images Attached Images    
    Last edited by Fredrick; 1 Week Ago at 05:39.

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    Re: Physical Color Filter with Digital

    Quote Originally Posted by Fredrick View Post
    Which one do you think is shot with the Red filter, and which one is not?

    The shades and greens are less dense in the top photograph, so I would say no red filter here.

    Ansel Adams, quite observant, wrote in The Negative, "some cases, the effect [red filter] in the shadows is more pronounced than in the sky itself ... also absorb green, further increasing the overall contrast in landscapes".

  4. #4
    Senior Member JoelM's Avatar
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    Re: Physical Color Filter with Digital

    Wow, I was going to say the opposite that the red filter was used in the upper one.


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