Originally Posted by Dominic Chan
It appears that Arve’s tool does not include tone mapping for the low end hor HDR10. When I calibrate to ST.2390 Tone mapping the low end is noticeably brighter.
I got a few requests via PM to post my “bright curves”.
The different tone mapping curves are intended to preserve the “overall brightness” when contents are viewed on systems with different peak nits. If you don’t know the peak luminance of your system, try the 85 nit curves first; if you want an even brighter picture overall you can try the 60 nit curves, keeping in mind the brighter curves will have less “HDR effect”.
See this post for some comparison samples:
The attached curves use 25 nits for the diffuse white or reference white (“bw” in Arve’s Tool). The curves are for 4000-nit and 1200-nit masters as indicated in the file name.
EDIT: The curves were originally created for the RS4x0 projectors. For RS5x0/6x0 the compensation should probably be reduced. The attached graph shows the low end bumps for 0.005 nits (solid blue line) and 0.001 nits (dashed blue line). The three 135-nit curves have different amount of black compensation. Black-compensated curves are only in the JVC jgd format. The attached "Bright Curves" use a 0.002 nits black compensation.
I have added two 500-nits curves that have minimal tone mapping. They are experimental curves meant to be used with the Panasonic UB820 when set to output HDR at 500 nits. The "hc" version hard-clips at 500 nits whereas the "sc" version applies some soft-clipping near the top.
I have added two curves that work with the Panasonic HDR Optimizer. They are similar to the Panasonic "Profiles" that JVC included with the new NX-series.
Added 4 curves (350, 600, 1000, 2000 nit) for use with LLDV.
Corrected Javs 85 black compensation (0.002 and 0.005 nits) curves.