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Re: High Pass sharpening - my take on it
Hacker
Nice clear tutorial about a useful method, however...
Dave
Your test results confirm my own feelings and experience (from a few years back, wrote about this in my second book) about the high pass method, i.e. it reduces fine detail and creates halos. This is because the high pass filter eliminates low frequency noise i.e. fine detail, and so does not sharpen areas of fine detail but actually seems to mush them up. USM (in whatever guise) is definitely a better option for images containing a lot of detail. This is also why images with digital noise look better with HPS, the noise is mushed up too!
As I said, a useful tool but only on appropriate images. But hey, if it suits the photographer go for it!
Cheers
Les
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