Free Canon C70 ETTR Cinema RAW Light Sample Footage
Format: RAW ST CLog2 Resolution: 4096 2160 Bit Rate: 398 Mbps Frame Rate: 24.00 P Lighting: Natural daylight Lens: Sigma 56mm f/1.4 DC DN RF Mount Exposure: ISO 800, f/1.4 Download here
The Daejeon Chronicles
The number one resource for information about HDR technology, workflows, tutorials, news and opinion.
Latest posts
Historical Revisionism in Color Science: Unpacking Steve Yedlin’s Conflation of BT.709 and BT.1886
In his presentation Debunking “HDR”, cinematographer Steve Yedlin shows a slide of BT.1886 to argue that it inherently matches human visual perception. To support his claim, Yedlin points to the distribution of code values: “This has been the theme the whole time, is that the human visual system is relative more than absolute. So it s... Continue Reading
PQ ST 2084 Is Not Log
In Debunking “HDR”, Steve Yedlin says, “it doesn t matter what the curve shape is as long as you know what the curve shape is.” Yet he has no idea what PQ is, who developed it, or why. He mislabels PQ as logarithmic: “And by the way the shape of this curve this logarithmic curve used... Continue Reading
Photochemical Film Workflow Consistency Myths, Part II
“There used to be this in-place system… it was this kind of system that worked and made an artful color rendering… and it did so repeatedly and reliably… [that] locked system… basically went in the trash can and we now have a completely unlocked system [1].” —Steve Yedlin, ASC, describing the transition from film to... Continue Reading
Keep ‘Em Separated
Keep color encoding and color space separate I’ve been writing about this for a while now. Rod Bogart, Principal Color Scientist at Epic Games, says it much better than I ever could. Color space ≠ color encoding “When we say linear RGB, it s telling us two important properties of the color value that we have,... Continue Reading
The Curious Case of the “Consumer” Canon C70
“With the advent of dual gain technology, where a high and low ISO are combined in one exposure, things started to change. We saw this technology early on in state of the art cinema cameras like the ARRI Alexa lineup, and they can be found on top of our “best of charts”. More recently this... Continue Reading
PQ ≠ HDR10 ≠ BT.2100
Yesterday I looked at the SDR section of Practical HDR and Wide Color Techniques in Gran Turismo SPORT [1] and pointed out several instances where color gamut, OETFs/EOTFs, and standards were conflated. The HDR section of the presentation exhibits a similar pattern, this time treating HDR formats, transfer functions, and complete television-system recommendations as though... Continue Reading
Gamma ≠ Gamut ≠ EOTF
A few distinct concepts may have become conflated in these slides from the presentation Practical HDR and Wide Color Techniques in Gran Turismo SPORT [1], particularly color gamut, OETFs and EOTFs, and the standards used in different applications. Although the presentation correctly introduces OETF and EOTF as separate stages of the imaging pipeline, the subsequent... Continue Reading
The Gaming HDR Analysts Are Wrong
Advice That Ignores the Reality of Display Limitations Gaming HDR analysts advise setting the in-game White Point slider of Dead Island 2 to 1150, claiming it’s needed to unlock 1,000-nit highlights. They also recommend setting Brightness to 25, unironically stating that it represents “a balanced exposure for the game,” or warning that significantly reducing it... Continue Reading
Dead Island 2 Recommended HDR Settings
“The next setting what we have is the Brightness setting, responsible for the overall brightness in the game. The standard factory setting is 25 and I found this actually a very good value to start with. I wouldn t increase or decrease this value too much because either you get Black Level crush or you have... Continue Reading