If the original is a JPG file, the modified image is the one that you see in the folder where you had put the original image (i.e.It is this image that you see in the View mode: However, when you exit Develop mode or save in Develop mode, ACDSee creates a JPG version of the modified image (for both JPG and RAW source images). While the sharpening tools are more like a conventional hunting shotgun that one would aim at a specific bird, in this case the edges of objects.Įach time you display a photo with an XML file, ACDSee Pro 7 reads this file and then applies these changes immediately to the image on the screen and the display copy in RAM (Not to the image saved to disk.) The Clarity tool is a normal sized shotgun with a sawed off barrel, scattering a conventional number of contrast pellets to just the mid-range tones. I see the contrast control as a one of those enormous shotguns of the 18th century, scattering a huge number little pellets of contrast evenly across the photo. Remember the contrast slider can enhance the illusion of sharpness as well, but I don't think anyone seriously considers it a sharpness tool. If I were to write about it in detail, I would have to place it in an article on exposure. It does what it does without taking either sharpness or noise into consideration. But this doesn't really make it a noise reduction tool either. This allows you to adjust mid-range 'pop' without adding to the overall noise in highlights and shadows. When you use it, you can actually see the middle of a histogram gain more prominence in relation to the right or the left. All it does is add contrast overall to the mid-range tones. To my knowledge, the differences between the two sides of an object's edge aren't taken into consideration with Clarity. Remember, what clarity does is adjust the contrast in the mid tones, ignoring the highlights and shadows. True, it CAN sometimes enhance the illusion of sharpness, but I consider it more of a focused exposure tool. I didn't write about Clarity in the sharpening article because I don't consider it a sharpening tool. Take comfort in the knowledge that what ACDSee is doing regarding sharpening seems pretty mainstream according to my research. Their auto-sharpen tools work pretty well (but not as well as the human eye and manual controls, I think) and I wonder if that doesn't set some sort of default value for them. If I were to speculate, they might be using that value in some sort of mathematical formula for some sharpening algorithm that can benefit from fractional pixel depth. It doesn't jibe with any of the research I did on the internet at all. Bobbert,I don't have a copy of Photoshop anymore to review, but I did review the PSP X6 help file and their sharpness control.

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