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02/27/2005 05:32:47 AM · #1 |
I've literally been on this forum a day or two and I've already seen "USM" mentioned several times.
What is it? Someone told me to use it in one of my shots, but I don't know how... |
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02/27/2005 05:36:59 AM · #2 |
Depends on the context...
Canon lenses have USM or Ultra Sonic Motors, in photoshotp USM is unsharp mask.
June
Alright, I reread your post. In that case, they meant you should sharpen your pic up a bit.
Message edited by author 2005-02-27 05:38:42.
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02/27/2005 10:31:03 AM · #3 |
In Photoshop, "USM" is "UnSharp Mask", an oddly named tool in the filters menu, sub-menu "sharpen". which allows subtle enhancement of the visual acuity of your image, and which will help you compensate for the loss of apparent sharpness when you resize to 640 pixels at 72 dpi for display on DPC. It will be the last step, or nearly the last, you apply to your image. It needs to be used carefully or it produces haloing effects that get you marked down for "oversharpening".
You can use the search feature to find several threads on the use of USM.
Robt.
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