Unsharp Mask Values

Started Sep 12, 2006 | Discussions thread
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hunk
hunk Veteran Member • Posts: 3,227
try this...

tgrey wrote:

See the Canon 1-series tips white paper:

http://www.photoworkshop.com/canon/EOS_Digital.pdf#search=%22eos%201-class%20digital%22

This suggests USM of 300, 0.3, 0 to offset the effect of the AA
filter. It's not specific to any particular camera, and I find it's

The 300, 0.3, 0 variables are oke for removing small detail softness as caused by the AA filter. But there are many more uses for usm...
In short you can use usm for

  • small detail retrievement

  • better contrast

  • defogging

and to add some numbers with this

  • small detail retrievement 400 - 0,3 - 0 till 200 - 0,5 - 0

  • better contrast 100 - 1 - 0 till 30 - 8 - 0

  • defogging 20 - 30 - 0 till 10 - 50 - 0

I often use a combination of these settings on a picture, a normal routine could be...
usm 10 - 30 - 0
usm 30 - 6 - 0
usm 150 - 0,5 - 0

But there are NO correct numbers, it totally depends on

  • in camera processing

  • type of raw conversion

  • noise

  • contrast

  • pixelsize

  • desired effect

  • subject

  • subjectsize

  • etc

 hunk's gear list:hunk's gear list
Leica M9 Canon Extender EF 2x II Sony 135mm F2.8 (T4.5) STF
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tko
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