We start by describing a special technique for using High Pass filter as an alternative to normal sharpening. We'll then show how that popular technique doesn't really offer a quality advantage over standard sharping before we shift into what makes High Pass a desirable technique... it has nothing to do with a visual difference in your image and everything to do with versatility when working with complex layered images.
NOTE: Some Windows users have reported issues accessing the video playback controls. While we're working on the issue, here's a Temporary Workaround: Click "Introduction" in the table of contents to the right of the video and then immediately click within the video to give it focus. After doing so, use the spacebar to play/pause the video and the left/right arrow keys to scrub forward or backward within the video.
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