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DPChallenge Forums >> Photography Discussion >> What is "USM"
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07/11/2007 05:24:25 AM · #1
dear all,

i looked through the challange photos and saw several times : "Used USM"
What does it stand for ???

thanks
pieter
07/11/2007 05:29:47 AM · #2
un sharp mask
a feature in photoshop
07/11/2007 05:30:26 AM · #3
Oke
that's simple
thank you !!
07/11/2007 05:32:28 AM · #4
//en.wikipedia.org/wiki/Unsharp_masking

Here you go :)
07/11/2007 06:57:03 AM · #5
This isn't something you'd "use" ona photo BUT in the photography world there is also another meaning for USM. Canon's Ultrsonic Motor gets abbreviated as USM on their lenses.

June

Message edited by author 2007-07-11 06:57:52.
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