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On paper this should be gamma 2.4 at 100nits. But on my IPS displays using gamma 2.3 instead almost always looks more correct than gamma 2.4, more like how I imagine the mastering studio intended. I hate to rely on subjectives but I can’t deny that this is a consistent preference I have. Can this be reasonably explained by the properties of my IPS panels, like the limited contrast ratio(1500:1)? If so, this will beg the follow-up question: Would I likely prefer 2.4 gamma on an OLED panel for the same content?
Yes, for consuming movie content in a dark room.
I only edit non-movie content and sticking with g2.2 120 nits worked consistently for me, even for consumption, so it begs the question.
Movies were mastered using 2.2, 2.35 & 2.4.
2.3 is a good middle ground for all this.
Nowadays 2.4 is used so that’s the correct gamma for modern SDR.
In my comparisons with LCD & OLED, 2.4 gave the best contrast on LCD that was comparable to a 2.4 OLED. Anything lower made LCD less contrasty.
Movies were mastered using 2.2, 2.35 & 2.4.
2.3 is a good middle ground for all this.
Nowadays 2.4 is used so that’s the correct gamma for modern SDR.
In my comparisons with LCD & OLED, 2.4 gave the best contrast on LCD that was comparable to a 2.4 OLED. Anything lower made LCD less contrasty.
Thanks for the clarification. Clearly 2.4 is the standard. I’m going to conclude that it’s some mix of my eyes and my IPS panel preferring Gamma 2.3 instead of 2.4. I will evaluate 2.4 when in upgrade to OLED, that will fulfill more conditions of current SDR standards, IIRC it specifies a contrast ratio of 2000:1 or higher.
The 2000:1 requirement is if you have the display at 100 nits. At 70 nits the requirement is lower at 1400:1 contrast ratio.
You can read about it in EBU Tech documentation
2.2 gamma is for PC & Video Games.
But for movies most common gamma that was used was 2.4, which had been used since the CRT’s days. CRT’s had a gamma of 2.4-2.5. And modern standards derived from this. Can read about it in EBU Tech document I linked.
In old days, content was mastered in 2.2 then viewed on a 2.4 gamma CRT.
Think of this similar to Apples 1.8 gamma. Or PC 2.2 gamma. They both had different system gamma’s, but both were viewed on the same exact CRT. A CRT which tracked 2.4 gamma. So even for older content 2.4 would be most correct gamma.
But when the transition away from 2.4 CRT’s happened, modern displays were calibrated to 2.2 then to 2.35 then to 2.4.
So a 2.3 gamma can be a decent average for all content produced over the decades.
