Hallöchen! bartokk writes:
> 2013/8/4 Torsten Bronger > <bronger-vbodrt1yutdtpoovwizczbs11bumm...@public.gmane.org> > >> At <http://wilson.homeunix.com/basecurve/>, I summarise my >> results trying to get the base curve of my camera's JPEG engine. >> It worked pretty well I would say. Granted, I could not model >> the behaviour at *very* low values very well. This may be >> improved by using 16-bit TIFFs. Unfortunately, the Python >> imaging library can only deal with 8-bit files. Besides, I set >> the measured basecurve in DT by hand, which is inherently >> inaccurate. > > I Torsten, > from here: > > http://ubuntuone.com/310eCANWmS36wm4dGrCeA5 > > you can download two couple of RAW+JPG from my Canon Eos Kiss X2 (450D). Thank you for your upload. Its basecurve is not very far away from "canon eos like", however, the shadows are slightly too bright with DT's curve. The basecurve can be reproduced with {{{{0.000000, 0.000000},{0.000100, 0.001614},{0.000300, 0.001616},{0.001000, 0.001658},{0.003000, 0.001950},{0.007000, 0.003159},{0.010000, 0.005750},{0.030000, 0.031613},{0.050000, 0.070769},{0.070000, 0.114838},{0.085000, 0.147682},{0.100000, 0.182020},{0.150000, 0.291103},{0.200000, 0.387073},{0.300000, 0.547609},{0.400000, 0.672104},{0.500000, 0.766026},{0.800000, 0.941105},{0.900000, 0.976170},{1.000000, 1.000000}}}, {20}, {m}}, 1} in basecurve.c and <rdf:li>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</rdf:li> in the XMP file. Tschö, Torsten. -- Torsten Bronger Jabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ darktable-devel mailing list darktable-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-devel
