Originally Posted by bobof
To be fair, the Radiance workflow isn't terribly different (though it usually remembers the serial port, sometimes it changes of it's own accord), but much of the reason for the experience is at Lumagen's door. I don't have to do the passblack stuff - though I guess this is just because the Lumagen LUTs are already videoscale with no access to BTB/WTW. The Radiance's own firmware only accepts LUT uploads to the currently active (displayed) CMS slot, with the CMS slots being selected by a complex logic in the Lumagen that allows you to conditionally choose different LUTs based on input, resolution, colour format, 3D, etc; you can either upload a LUT or you can zero the LUT. I >think< the Lumagen firmware would allow you to disable the 3DLUT portion at the Lumagen, but perhaps not the 1DLUT portion; so for "passthrough" you do have to either zero things, or keep another CMS setting with an empty 1D/3DLUT and switch to that. And there are good reasons why you might not want LS to be "automatically" switching CMS for you at the Lumagen end because of the above. Arguably what would be "nice" would be for there to be a little "LUT upload widget" on screen that made some of the operations you'd like to do often a bit quicker; that is probably all I would ask for as a Lumagen user.
I'm not sure what you're complaint is about generating the P3 LUT and REC709 LUT separately is as that is your choice for your system (or is it just exasperation - I've got to do all that again?!); - is it that you think there should be some quick "preset" option you can edit that would set LS to generate the two specific LUTs you desire because you happen to always need those two LUTs? I think that kind of thing is nice to have, would be cool and a time saving feature, but I don't expect it. As you're not using the same baseline you're having to do a separate profile for each I guess so I don't really get your point here; you couldn't actually output the two LUTs from the same profile so it would be a bit of a pig and special case to build something to automate that.
Maybe the remote control option for LS might allow aspects of these "workflows" you follow to be scripted externally. It will be interesting as if the remote control stuff doesn't have access to all these fields you mention it sounds like it won't actually work for many use cases.
Anyway, I do get your frustration though as it annoys me every time I use a product and have to do the same trivial operations over and over again that I just think should really have been done for me.
No of course I accept having to do a separate calibration for rec-709 in order to get better results. That's not up to Lightspace. I could use the option to limit white from the P3 baseline (as I use the filter for both), but that kills on/off contrast so there is no advantage doing so, so I have to use a different iris setting to set peakY to around 50nits for SDR rec-709. It's just that because of the convoluted MadVR support in LS, I have to do the whole thing again, when with another software it's simply a matter of loading another workflow that sets all my targets automatically, profiling, uploading.
And no, I'm not expecting LS to switch LUTs automatically in any way. I only want to be able to disable/enable the LUT I have selected manually in MadVR and have a way to know if it's enabled or disabled, without having to go through the disconnect MadVR, change setting in MadTPG, reconnect MadVR. Zapping the LUT isn't an option if you want to verify a calibration.
I guess I could live with any of these issues separately, but it's the combination/accumulation (coming from a lack of maintenance since 2016) that makes the current implementation hard to live with. I still have the concatenated P3 LUT that Steve sent me back in the summer, and I'm hoping that I'll be able to use the product again with my rs2000, as gamut cover in both rec-709 and P3 should be better if not perfect, so shouldn't need LUT concatenation.
However, I won't have the option to not use the filter to save brightness, as I won't reach more than 95% of P3 without the filter, at best, so posterization issues are likely to pop up in that case without using the LUT concatenation procedure (a step too far for me).
I'll report my results in the LS thread as this is off topic here.