Hallöchen! johannes hanika writes:
> very nice, i'm interested in doing the c port and the basecurve > fit (i found some old non-linear optimization code which i wrote > to fit analytic reflection functions to measurements and which i'd > like to test on that data). is your script really still the same? Yes. > what's the reason for the recent increase in confidence ;) ? Stupid me made the original measurement with DRO/D-Lighting (choose your brand) activated. Now, I shot quite different subjects with correct settings, and the basecurve is the same in each case. This causes my increase in confidence. Moreover: 1. The Sony basecurve in DT is not too much different from my measured one. I think that the difference merely reflects different tastes. So, I don't think anymore that changes in the basecurves are important unless we see RAW data saying otherwise. (Still, I need the correct basecurve for my camera because I shoot mainly in JPEG, and I like my RAWs to blend with them.) 2. On log-log scale, you can see the control points of Sony's original basecurve, and the polynomials inbetween! Unfortunately, splines in DT work in a different way, so you cannot simply use Sony's control points. 3. The green channel's basecurve has by far the least noise, and it has the most plausible shadow behaviour. In particular, it crosses the origin. I know that the resolution/dynamic range is best for green, but this effect is really strong. Tschö, Torsten. -- Torsten Bronger Jabber ID: [email protected] 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 [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-devel
