Peter Figen Online Upload & Sell: On
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p.1 #3 · p.1 #3 · Questions about Downsizing JPG files for screen and web viewing. | |
It's almost always better to start with the native resolution of your camera, if for no other reason, to not limit yourself for future output requirements. Ps CS 5 is fine for downsizing, although somewhat limited in interpolation options. Bicubic standard is usually the best choice as Bicubic Sharper, which is what Adobe recommends for downsizing, applies global sharpening, which often leaves high contrast transitions with visible halos. Iridient Developer does have several other interpolation choices, which may or may not improve your output depending on image content and final file dimensions.
The bottom line is that you're almost always going to have to make downsized files for web output. You want to choose the best interpolation routine for your image by trial and error and then carefully apply sharpening - usually Unsharp Masking, but maybe Smart Sharpen instead - where you have control over amount, radius and threshold, and apply that sharpening to a duplicate layer which can then be masked if need be. If you apply USM on duplicate layers you can also affect the light and dark halos separately simply by changing layer blend modes. Smart Sharpen has that feature built into the advanced portion of the filter already. You can also use the layer Blend If sliders to automatically mask portions of your image from filtering.
As far as never beating the quality of the original, I'm not sure I agree with that. The real answer is that it depends. Often, lower res versions of the file actually look better and smoother than the high res original, particularly in ultra high iso images where digital noise is a factor.
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