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What is USM and why do I need to sharpen my photos? |
| The 300D deliberately doesn't sharpen pictures as much as prosumer point-and-shoot cameras do. This is to allow you do more in post processing. (see In some cases, post processing is essential for pictures taken with the 300D, and especially the sharpening shouldn't be underestimated. Downsizing pictures for web display does two things:
1. it makes them smaller In order to compensate for this softness, you might want to apply a bit of sharpening to bring back that "zing". USM (unsharp mask) is a sharpening technique used in Photoshop and other image processing programs. You might want to check out the sharpening section in this article to learn a bit more about it: http://www.seittipaja.fi/data/Photography_lessons/a_Photography_lessons.html Personally I use two passes of USM on most pictures for web display:
1st pass: 30-60% / 0.7 pixels / threshold 0 Just make sure you don't overdo sharpening or the pictures will look oversharpened. It takes a bit of practise and different pictures take different values, but after a couple of tries you should get the hang of it. Oh, and sharpening should be applied as the *last* step in your workflow.
(nubui)
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