It was 6/8/03 11:47 am, when Slater King wrote: > I shot some stuff with a 1ds and, particularly when the subject was against > a bright background such as a window or sky, the subject often had a colour > fringe round it. > > I did a test comparison with film which showed the fringe to a lesser degree > but without any colour bias, ie it wasn't magenta / green etc.
Slater I think that's because with film the capture is non-linear and the levels fall off gradually, unlike digital where there are abrupt fall offs between high contrast, transitional areas (not the case with multipass capture). That's my understanding, FWIW. > Is digital more prone to this? Yes. > Might this change from body to body? There maybe a slight difference between CMOS and CCD but probably not. The lens plays a bigger part than the body in causing "fringing." > Any tips on how to get rid of it (in ps)? Not at the moment (well, strictly speaking, yes). I made a request on the Photoshop features forum for a feature to allow you to fix fringing (color aberration) and noise and was attacked so much (I gave as good as I got, of course) I left in disgust at the mentality of the "gate keepers." You can try moving the affected channel(s) by one or two pixels. Select the channel, select the Move tool and then use the arrow keys by the Numeric keypad to nudge the pixels. You can also use Panorama Tools (a Photoshop plug-in): http://www.all-in-one.ee/~dersch/ and the tutorials posted by Brian Caldwell here: http://www.caldwellphotographic.com/ccmain.html Beware, the screenshots featured in the tutorials are from the PC version, the readings are reversed on the Mac version of the plug-in! >... was going to clone stamp, mode > colour, but it's not perfect and i'd like to keep the files in 16bit Could be a problem that... HTH. --/ Shangara Singh :: Adobe Certified Expert ~ Photoshop 7.0 :: Adobe Photoshop 7.0 Essential Tips :: Exam Aids for Photoshop, Illustrator & Dreamweaver :: Http://www.shangarasingh.com =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
