Archived posting to the Leica Users Group, 2015/02/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hopefully its not in the firmware somewhere to get red of red eye. On 2/10/15 5:19 AM, "Peter Klein" <boulanger.croissant at gmail.com> wrote: > We were treated to quite a show during our anniversary dinner. > <https://www.flickr.com/photos/24844563 at N04/16304267069/> > > I'd like some advice on a technical problem with this picture, and in fact > with all of the pictures I took of the city from atop the Needle. Red car > tail lights turn white. It isn't overexposure, because it happens even on > shots that I deliberately underexposed drastically, where all the RGB > values are under 255. In shots with any decent city detail, the red channel > does hit 255, but the green and blue are much lower. Lowering the exposure > in post, or using highlight recovery has no effect. > > This doesn't happen with larger areas of red light where the pixels have > the same values as the little tail lights. But taill lights turn white, as > do other points of colored light like the blue and green Seahawks colors > that still adorn some construction cranes. The key seems to be that the > light sources are just a few pixels in diameter. > > Maddeningly, on the onscreen preview, the tail lights appear red. But when > I "develop" the JPG, they turn white.They also turn white if I blow up the > onscreen preview to 50% size or larger. > > The camera is an Olympus E-M5 with 45/1.8 lens, and the RAW developer is > Capture One v. 7.1.2. Here's a screen clip of the whole picture, followed > by a section with and a string of car rears blown up to 400% so you can see > what's going on with the pixels. > < > http://gallery.leica-users.org/v/pklein/temp/SpaceNeedleMoonriseScrPreview.JPG > .html >> > < > http://gallery.leica-users.org/v/pklein/temp/SpaceNeedleMoonriseCars400pct.JPG > .html >> > > Advice, anyone? Is this just an inevitable result of the Bayer array, or is > there a way to fix it? > > --Peter > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information -- Mark William Rabiner Photographer http://gallery.leica-users.org/v/lugalrabs/