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Thread: A Modest Contribution to Dispelling Diffractiophobia

  1. #21

    Join Date
    May 2015
    SooooCal/LA USA

    Re: A Modest Contribution to Dispelling Diffractiophobia

    Don't quote me, but I think ultra sharpness is overrated... Ultra sharp lenses have a single plane of ultra sharpness that usually does not match the less optimal planes of focus and more difficult to blend...

    Often, diffraction is your friend as it evens and smooths focus of different focus planes for a better overall effect...

    An "acid test" for sharpness vs diffraction would be photographing a bare tree, as super thin branches would resolve too small for the eye to resolve on a print with super sharpness, but slight blur of diffraction would make it more visible... And overall focus would be more even... High resolution also starts to reveal what I call "the dirty layer" which is dirt/soot on things like white marble that can make it dingy looking...

    Photographing a lens test chart or even a sheet of fine newsprint at different aperture settings some night should answer a lot of questions about diffraction... (But this is just one plane of focus, how do the other planes blend???) Overall look is important...

    Steve K

  2. #22
    Nodda Duma's Avatar
    Join Date
    Nov 2014
    Batesville, Arkansas

    Re: A Modest Contribution to Dispelling Diffractiophobia

    I must admit having never worried about diffraction limit for photography (work is a different story). For me the stop setting is determined by what I want for depth of field.
    Newly made large format dry plates available! Look:

  3. #23

    Join Date
    May 2019
    Stockholm, Sweden

    Re: A Modest Contribution to Dispelling Diffractiophobia

    Quote Originally Posted by Bernice Loui View Post
    No, when in doubt why expose any sheet of film at all?

    Well, only exposing when not in doubt would have solved my storage requirement. I could have kept my two negatives in a single sleeve.
    Lasse Thomasson | Instagram

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