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Photography Forums
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swanseamale47
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Date Posted:
Jan/09/2013 3:01 AM
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Most digital images will benifit from some sharpening, if only to replace the slight loss of sharpening from the AA filter over the sensor.
Here I'll mention two of the most common methods and a rough guide to settings (these will vary image to timage) but it's a starting point.
Remember to always view your images at 100% when sharpening (or noise reduction) photoshops pixel dithering doesn't display the image correctly at other sizes.
The first is the good old unsharp mask (a term from film days)the 3 sliders are amount, which is the amount of sharpening applied, radius, which is essentially the width of the sharpening, and threshold, which is the point at which the sharpening starts.
First duplicate the layer (CTRL+J) then go to filter/sharpen/unsharp mask
For a landscape type image with lots od fine detail I tend to start with
Amount 185% Radius 0.7 and threshold between 0 and 3 (here it's 2)
For portraits I find Amount 85% amount 2.0 and threshold 3 offer a good starting point.
The last step is to ajust layer opacity to fine tune the sharpening, remember to flattern the layers if you need to end up with a jpeg for web.
The other popular method is High pass sharpening, make a duplicate layer, go to filter/other/high pass and ... your image will turn a horrible grey colour (see pic) don't worry thats what we want, theres only one slider to ajust which makes life easy, simply ajust the slider untill you see a sort of edge effect showing through the grey (usually between about 3 and 10 (3.5 here)
when your happy click ok, and yes your picture still looks horrible, but it's easy to fix in the next step. Now go to the layers palette and change the highpass layer to overlay blend mode (where it says normal at the top) soft light will also work with a slightly different effect, and bingo your pics back to normal with the sharpening. Finally ajust the layer opacity to fine tune, and flattern the layers if you need to end up with a jpeg.
Message edited by: swanseamale47 on 01/09/2013 03:11:26
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kendrikwiley
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Date Posted:
Apr/09/2013 7:34 AM
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Digital sharpening is quite different as compared to other technique. As compared to camera film digital images are turned into pixels and save in digitally. Photo shop is the best software to sharpening the images because here you will get various colors modes.
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