We were treated to quite a show during our anniversary dinner.
<https://www.flickr.com/photos/24844563@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
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