 | Good way to sharpen images |
| Good way to sharpen images |
Good way to sharpen images | ||
| Hear is a new technique i learnt to sharpen images in Photoshop that seems to give better results than other techniques. | ||
| Justin Watson (Justin) Post Count: Joined: | Msg: #1 Added: 2007-01-27 08:38:48 | |
| Got this tip off a podcast and tried it out with good results, no colour halos either!! Adrian you might be able to comment on this a bit more. 1. In photoshop convert your image to LAB colour. select image > mode > lab colour 2. In the channels tab deselect the A and B channel to just work in the L channel. 3. Sharpen the image using unsharp mask or other filters. 4. Reselect the A and B channels 5. convert back to RGB (or CMYK) select image > mode > rgb colour | ||
| Adrian Warren (AdrianW) Post Count: Joined: | Msg: #2 Added: 2007-01-31 23:52:35 | |
| Yes, it's reasonable approach. I'd use SmartSharpen rather than USM though. That said, it's seeing less use these days - as converting from RGB > LAB > RGB can solarize colours and cause unexpected colour shifts. Luko from TE suggests this for 800px images, and it's probably the best approach: - USM : effect 18, radius 40, threshold 0 - USM : effect 150 radius 0.3, threshold 0 - edit/fade USM, 100%, darken blend mode, - USM : effect 150 radius 0.3, threshold 0 - edit/fade USM, 50%, brighten blend mode. The high radius value boosts local contrast, the low radius values increase fine detail. I'd replace USM with SmartSharpen there though too I think. Also investigate the high-pass sharpening technique on LL. It complements the other approach. | ||
| Adrian Warren (AdrianW) Post Count: Joined: | Msg: #3 Added: 2007-02-10 02:35:43 | |
| There's also a very useful set of pages about sharpening here | ||
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