Viewing profile — sandofsky

If the sunflower and Osaka photos aren’t in HDR, there’s something off with your system. Make sure you aren’t in low-power mode. Fun fact: the HDR photos are actually looping video…

Grain will definitely be tweaked! It landed late in the release cycle, and I want to give it more love before the final launch.

Hey everyone. Halide guy here! This post came out a few weeks ago. To answer your question in advance, your favorite thing from Mark II that’s missing is eventually coming to Mark …

> It's about HDR from the perspective of still photography, in your app, on iOS, in the context of hand-held mobile devices. It's from the perspective of still photography, video, …

This post is written for people who have heard "HDR" and feel confused. That introduction lists two types of HDR people might think about. "The first" means "the first of two types…

> Hehe outside is “HDR content”? To me that still comes off as confused about what HDR is. "Surprisingly, daytime shots with high dynamic range may also suffer from lack of light."…

You opened this thread arguing that Ansel Adams didn't "use HDR." I linked you to a seminal research paper which argues that he tone mapped HDR content, and goes on to implement a …

> The sentence “What if I told you that analog photographers captured HDR as far back as 1857?” is explicitly claiming that analog photographers use “HDR” capture, No, it isn't. It…

> It seems like a mistake to lump HDR capture, HDR formats and HDR display together, these are very different things. These are all related things. When you talk about color, you c…

In theory PQ specifies absolute values, but in practice it's treated as relative. Go load some PQ encoded content on an iPhone, adjust your screen brightness, and watch the HDR bri…

Thanks. Updated.

I don't think that's the colloquial meaning. If you asked 100 people on the street to describe HDR, I doubt a single person would bring up ITU-R BT.2100.

> Does anyone else find the hubris in the first paragraph writing as off-putting as I do? > "we finally explain what HDR actually means" No. Because it's written for the many casua…

Human vision has around 20 stops of static dynamic range. Modern digital cameras can't match human vision— a $90,000 Arri Alexa boasts 17 stops— but they're way better than SDR scr…

No. When you simply adjust shadow and highlights, you lose local contrast. In an early draft of the post, there was an example, but it was cut for pacing.

While it isn't touched on in the post, I think the issue with feeds is that platforms like Instagram have no interest in moderating HDR. For context: YouTube automatically edits th…

By definition, a RAW container contains sensor data, and nothing more. Are you saying that Adobe is using their proprietary algorithms to render proprietary RAW formats in Lightroo…

Hey. I’m the guy quoted. RAW is ultimately about sensor readings. As a developer, you just want to get things from there into a linear, known color space (XYZ in the DNG spec). So …

> Camera sensors from different companies (and different generations) don't have the same color (or if you prefer, spectral) responses with both their Bayer filter layer and the un…

Raw decoding is an algorithm, not a container format. The issue is every is coming up with their own proprietary containers for identical data that just represents sensor readings.…

> Cameras absolutely could emit DNG instead, but that would require more development friction: coordination (with Adobe), potentially a language barrier, and potentially making it …