UHD color difference

[spoRv]

Found a UHD screenshot of Pacific Rim, and noted that snow (yep, I'm a snow-should-be-whitish-at-least-during-the-day guy, so? ) is a bit too green for my tastes



in comparison, BD is (almost?) right (take in account only colors)



Now, I wonder if this is due to different color spaces, or wrong conversion between color spaces, HDR Vs SDR etc. or just a different grading choice.

[BronzeTitan]

And corrected to "real color" . .

The odd thing is ... I see these same discrepancies between the old DVDs and their newer Blu-rays. To look at Blu-rays we would think ... why the tint? why the off-color? why the greenish reds and whites?

Maybe they just don't know what they're doing. Wrong color-spaces, mis-calibrated (or no calibrated) monitors, spilled coffee on the console, whatever. Then nobody reviews their work to say "what is this garbage!" ?  They just blindly manufacture thousands and thousands of product just to hear everyone complain about it?  Somebody stop the madness!

[zoidberg]

If that's the scene where the walkers find the Jaeger by the beach, I think it takes place early morning (the battle was at night). I watched this at the cinema and I vaguely remember it being on the cyan side. Got any more screenshots?

[spoRv]

@BronzeTitan: even if I like natural colors, I think films must be color timed/graded anyway; the problem is, which is the *right* grading? Agree that there are often difference between DVD and BD, I'm curious to see if there is any title with 3 different gradings on DVD, BD and UHD. Sometimes, a simple colorspace conversion works, other times you need a double conversion - it means they made the mistake of using a wrong colorspace twice!

@zoidberg: top UHD, bottom BD:

[zoidberg]

I wish I knew more about colourspace stuff.

[dvdmike]

Don't forget WCG and HDR change it when not in a screenshot

[deblock]

I think 8-bit color movies will get re-tinted again for  4K/10-bit and purists like us won't like it... Hopefully, this won't be the case, however, I doubt it. Of course, there will be some releases that still look good, even with enhanced color.

[BronzeTitan]

I came across this YouTube clip of a "day for night" shot in Where Eagles Dare, which uses the obvious and artificial "convention" of night on film [top]. A "realistic" look of night shooting is loss of color as it gets darker, with red fading greater than the other colors [bottom] . .

It shows that "style" must be internally consistent. (If it's Star Trek and the crew beams down to a red planet, the planet's surface should look reddish. Otherwise it's just Peter Jackson's "green-graded" Fellowship Of The Ring.)