John Navitsky
Well-known member
so it looks like the z8 is going to support HLG for stills and this also impacts the recordings of RAW files.
we had some discussion going on in the z8 thread, but i figured this is enough of a detour that maybe it was worth it's own thread.
so, i have a very incomplete idea about how this works, but it seems very interesting.
after reading around, i get the impression that (and folks can jump in here and correct me) that one of the following curves are used to control the distribution of the data in the raw image, then the inverse of the curve is applied at decode time. so basically it allows to organize the data in the file differently to be able to cover more dynamic range with the same data.
en.wikipedia.org
if i'm reading that true, it seems like this could be useful, even if we are not attempting HDR photos, but it seems like HDR is indeed something this can make possible.
it also seems that adobe picked up support back in 2022, so perhaps if the inverse curve is applied to the raw for viewing, maybe that explains @Steve 's observation that the SDR and HLG images seemed to have the same histogram
thoughts?
some links
www.dpreview.com
en.wikipedia.org
www.dpreview.com
we had some discussion going on in the z8 thread, but i figured this is enough of a detour that maybe it was worth it's own thread.
so, i have a very incomplete idea about how this works, but it seems very interesting.
after reading around, i get the impression that (and folks can jump in here and correct me) that one of the following curves are used to control the distribution of the data in the raw image, then the inverse of the curve is applied at decode time. so basically it allows to organize the data in the file differently to be able to cover more dynamic range with the same data.
Hybrid log–gamma - Wikipedia
if i'm reading that true, it seems like this could be useful, even if we are not attempting HDR photos, but it seems like HDR is indeed something this can make possible.
it also seems that adobe picked up support back in 2022, so perhaps if the inverse curve is applied to the raw for viewing, maybe that explains @Steve 's observation that the SDR and HLG images seemed to have the same histogram
thoughts?
some links
A bit confused: what's a HEIF and why do we need 10-bit stills and video?
10-bit video, 10-bit stills modes and the ability to shoot 'HEIF' files are increasingly being added to cameras. But what's do these modes achieve? We to look at how data is captured, how it's stored and what benefits you should expect from 10-bit capture.
www.dpreview.com
Hybrid log–gamma - Wikipedia
Adobe demos true HDR support in Adobe Camera Raw, giving a glimpse of photography's bright future
Adobe has added the ability to edit and create HDR images to Adobe Camera Raw as a 'technology preview.' We explored how it works, and what it might mean for how your photos can look.
www.dpreview.com