EDGE EFFECTS

EDGE EFFECTS

  1. hortense

    hortense Member

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    hortense submitted a new resource:

    EDGE EFFECTS - EDGE EFFECTS

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    Last edited by a moderator: Feb 6, 2016
  2. Sean

    Sean Admin Staff Member Admin

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    comments from the previous article system:

    By Claire Senft - 09:15 PM, 01-31-2006 Rating: None
    This is a nice article Hortense. I have a disagreement with your terminology. A positive image from a mask when combined with a negative will reduce the contrast of the sandwhich requiring the use of a higher grade paper to restore contrast. Therefore the unsharp mask is a contrast reducing mask not a contrast increasing mask. If one would make a print with and without the mask on the same paper grade the contrast will be reduced. To make a contrast increasing mask one would need to combine a negative mask with a negative or a positive mask with a positive. Good luck with your masking.

    By hortense - 05:02 AM, 02-01-2006 Rating: None
    I did not sufficiently explain the context to this reference. Using an USM it will increase your need to PRINT on a high grade setting. Typically you want a 1-grade increase (or more depending on what you are seeking. Thank for pointing out need for better clarification.

    By Daniel Lawton - 01:18 AM, 02-03-2006 Rating: None
    Thanks for contributing a very useful article. I tried USM this summer with varying degrees of success but this makes me want to give it another go.
     
  3. Photo Engineer

    Photo Engineer Subscriber

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    Mike Kriss, author of an extensive article on edge effects has given me permission to publish parts of his work, as applicable on APUG. As soon as I can get around to it, I will scan and upload this work. It was published by the SPSE and ICPS several years ago.

    PE
     
  4. Louis Nargi

    Louis Nargi Member

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    great post