hey On Tue, Dec 18, 2012 at 2:33 AM, Emre Meydan <[email protected]> wrote: > Hi, > > I know somebody else was working on a profile for this camera, but i also > wanted to try it myself. > > I had to make three different sets of shoots before i got a nice profile. > What i tried last (and what seemed to work) was to shoot the window of my > room: the sky was overexposed, while the shadows in the room provided > underexposure. I also exhaled on the lens for a bit of extra-blur :)
good idea :) > I'm not sure if everything is as it should be: looking at the graphs, the > red channel is not clipped, and for iso 400 & 1600 the blue channel also > doesn't seem to be clipped (though close). graphs look fine. iso 100 is not quite as overexposed as the others, so the fit is not optimal (but who denoises iso 100..). if roumano agrees, i'd use your values as new values for the 550d. cheers, jo > But after initial testing it seems to work very well. Up to 400 iso the > results are really good. With higher iso the profile removes fine noise, but > larger color blotches remain -- as other people noted. I guess they require > a different kind of noise reduction. > > One small problem i have is that, in the presets section i see two different > sets of presets: half of the presets are named "Canon 550D", but selecting > them doesn't change a thing (even though darktable seems to calculate stuff > when they're selected). The other half are simply called "test" and they are > the ones that work. > > You can get the resultant files here, and check if anything is wrong: > http://emremeydan.com/tempor/550d-noise_01.tar.gz > > Included is a camera-jpeg of 400iso, to show you what i used for profiling. > I can also send the raw files if you need them. > > Thanks a lot for the hard work! > > ... > emre > > ------------------------------------------------------------------------------ > LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial > Remotely access PCs and mobile devices and provide instant support > Improve your efficiency, and focus on delivering more value-add services > Discover what IT Professionals Know. Rescue delivers > http://p.sf.net/sfu/logmein_12329d2d > _______________________________________________ > darktable-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/darktable-devel > ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ darktable-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-devel
