On Mon, Feb 15, 2010 at 7:39 PM, Frank Gore <gorem...@gmail.com> wrote: > On Mon, Feb 15, 2010 at 11:37 AM, Pascal de Bruijn <pmjdebru...@pcode.nl> > wrote: >> Indeed. Another problem is: what does the user actually want... >> >> 1. Real sharpening >> 2. Enhance visual acutance >> http://en.wikipedia.org/wiki/Acutance >> 3. Local contrast enhancement (very usefull for black & white) >> >> Refocus does 1, Unsharp mask does 2 and 3. I guess most people >> actually want 2 and/or 3. > > I use UFraw as an alternative to Adobe Camera Raw and my camera's > provided software. I think this is probably true for most users of > UFraw. So keeping that in mind, a sharpening feature that gives > results similar to those types of applications would provide users > with "expected" results. I'm not sure what sharpening technique those > software packages use. > > Also, many cameras include a "Sharpness" setting for the JPG/TIF > output. For example, my Pentax K-7 offers 2 options for in-camera > sharpening: a "Sharpness" slider that goes from -4 to +4, and a "Fine > Sharpness/Fine Sharpness 2" setting which can be enabled independently > from the slider. Again, I'm not sure what sharpening methods are used > by the camera's firmware, and I'm not familiar with other camera > brands and models, but it would probably be best to try and match the > results that users expect from their own cameras if possible. Often, > the camera's results tend to match the included software's results > too. > >> Again, preferably we'd like to offer the user a million different >> sharpening techniques... But I'm guessing most folks want the unsharp >> mask for it's versatility. > > I stopped using unsharp a while back because of the annoying white > outline that can develop when applying higher levels of unsharp. I've > been pleasantly surprised by the "Smartsharp/Smart Sharpen" types of > masks, which I think incorporate unsharping as a part of their method. > It's a filter available by default in Photoshop CS2 (called Smart > Sharpen), and there's a similar plugin available for Gimp (called, > Smartsharp).
The problem with those two is mainly (IIRC) that those two are relatively complex plugins... The key with applying an unsharp mask is not overdoing it. I think some companies actually call this (sharpening in the RAW developer) presharpening... since ideally you want to sharpen after resizing as well... Regards, Pascal de Bruijn ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ ufraw-devel mailing list ufraw-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ufraw-devel
