* Carol Spears <[EMAIL PROTECTED]>: > On Fri, Nov 12, 2004 at 09:15:33PM -0500, Richard wrote: >> Okay, Thanks to all. >> >> Filters->Colors->Decompose >> Found LAB, and did the delete A&B to get the Light Channel, >> >> Q. Since the original image was a Color / Infrared shot (digital) >> would the best was to get all the detail of Gray/IR is using Decompose? >> >> After applying auto levels, you have gray scale. >> > that should not have happened. auto levels on a color image does not > yeild a grayscale unless you started with one. i am fairly sure about > this.
IR images may seem colored, but it's generally just colorcast, so autoleveling will remove that cast and it becomes gray. >> My understanding is that going to Gray scale by itself, you lose 16bit to >> 8bit. >> So, Decompose would be better? GIMP-2 doesn't support 16bit in any other way but reading 16bit depth images (converted to 8bit right at the spot). > decompose gives a grayscale, it just gives a smarter one than desaturate > or changing the mode alone. Filters->Colors->Channel Mixer is generally best way to convert Color->Monochrome. AFAIR there's even some channel percentages floating on the net that're supposed to give you look of some certain brand of film. -- Psi -- <http://www.iki.fi/pasi.savolainen> _______________________________________________ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
