He encontrado este hack para calibración en DV en una web. ¿Qué opinas
@calibrador?
Optional brightness “hack” for DV mode
We couldn’t recommend this if your intent is complete accuracy, but if you find your DV calibrations too dark for your viewing conditions, and you can’t improve things enough using the Shadow Detail corrections described below enough, there is a manual “hack” you could consider. This can help improve the overall brightness of your DV mode very nicely.
To do this, you can manually edit the DV config text file created above before you upload it, to trick the TV in to being a bit brighter in this mode. Go in to the two DV text files created and saved on your PC and edit your ‘Tmax’ figure in both (the max brightness for the screen) to something lower than the actual peak. For instance if the Tmax is 700 nits, you could edit this to 500, 400 or even lower. When you upload the DV file to the TV it will trick it in to thinking the max brightness is lower than it is, altering the PQ curve accordingly. Don’t worry this won’t limit your actual peak brightness output, it will still reach 700 nits, but it will make the DV mode brighter overall including in darker scenes.
This is probably the kind of thing where you’d want to ideally observe actual DV content and see the changes as you make them. To do this, go in to the source tab of the Calman software and turn the pattern generator off using the tick box, but leave the Display Control section connected which will leave you with calibration control on the TV. Go and play some DV content – we used some darker scenes in Disney+ The Mandalorian to easily observe the impact these changes had as we made them. Find a dark scene (the opening of Season 2’s “The Marshall” episode is a good example) and pause the screen at a suitable moment. You can then edit both of the DV config text files, save them both, then using the second display you have connected where you are controlling the Calman software, upload them to the TV using the button in the software. Note that while you manually edit both files, when you upload to the TV you only select one of the files in the software window.
You should see the screen brightness change, and you can repeat this as many times as you want to find a suitable brightness for your individual preference, viewing conditions etc. Experiment with different Tmax settings in those files and see what you like. Then find other brighter scenes in the content and check that looks ok there too. You should find a nice balance easily enough with a few changes to that Tmax setting as you watch the DV content on the TV. Personally if I am using this approach from an OLED TV that can reach 700 nits peak, changing the value to 400 gives a nice boost in DV brightness and is a good starting point for many people.
As we said, this is not really recommended if you’re focused on accuracy, but is a possible option for hacking the brightness if you need as many people find DV mode just too dark overall especially in daytime viewing. What you could do is calibrate one of the DV modes (DV Cinema Home mode) like this with the brightness hack used to make it brighter for daytime viewing, then calibrate another mode (DV Cinema) for nighttime viewing, where you leave this stuff alone. That might be useful to many people.
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