Version: 1.6.3 (using KDE KDE 3.5.7) Installed from: Gentoo Packages OS: Linux Unsharp masking using a fractional radius (1.5 or 1.8) is used quite often for high quality printing. It is also used to correct slight blurring caused by many scalers. Unfortunately, Krita does not support this yet.
Wouldn't it also be a good idea to conform to the common terms and use radius, amount and threshold, instead of half-size, amount and threshold? Also, the ranges we allow differ from, frex, Photoshop, where: radius: 0.1-250f amount: 1-500% threshold: 0-255 and in Krita everything is 0-99
Rather than radius, it should use the sigma, and the range is 0-1000. Amount is currently expressed as float instead of percent and is in the range 0.0 - 5.0 (the gimp allows up to 10.0). And finally threshold is in the range 0-255. At least in 1.6, if that's not the case in trunk, then it indeeds need to be fixed, but that might mean we have lost all our range for filters configuration during the port to Qt4/KDE4.