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Quote:
Originally Posted by Craigo87 /forum/post/16933079
I use an HTPC to playback DVD's on my NEC 110LC CRT and have gamma set to 1.40 for all.
Craig
Quote:
Originally Posted by nidi /forum/post/16933349
I was under the impression that gamma needs to be around 2.2 to 2.5.
I had it at 2.5 , but would like to know how many people have it lower
Michael
Quote:
Originally Posted by Mark_A_W /forum/post/16933432
Like Craig, I have my HTPC set to 1.25 (B), 1.35 (G) and 1.45 (R).
But this is a completely different Gamma value to the one you mean nidi, which is the end display gamma.
Quote:
Originally Posted by dovercat /forum/post/16940156
You lost me, are you saying only the color is altered when it is remastered. No change to gamma pre-emphasis from the cinema lazy s-curve gamma?
Quote:
Originally Posted by tbrunet /forum/post/16940001
FWIW practically 100% (DVD/Blu ray) of motion picture releases are NOT engineered with the standard ITU-R 709 pre-emphasis.
The only thing in the post production chain that is Rec 709 is the video monitor the colorist was referencing. Until recently this was an industry standard Sony or Ikegami direct view CRT. This monitor (~$25K) was designed by the manufacturer to have a ruler flat 2.20 (OETF) transfer function all the way down to 1% of reference white "when calibrated".
Quote:
Originally Posted by dovercat /forum/post/16940156
"If you're simplifying it, camera gamma is 1/0.51, not 1/0.45"
Ok thanks, how do you figure out what is simplifies to. I have seen it refered to before as being simplified to 0.5, but do not understand how you get the simplified figure, I guess it is what ever plots closest to it on a graph.
Quote:
Originally Posted by andrewfee /forum/post/16940342
That doesn't match up to what the EBU and ARIB say. The EBU's measurements have shown that a CRT's ‘native’ gamma is 2.35. (not 2.5 or 2.2 as some people believe)
Quote:
Originally Posted by tbrunet /forum/post/16940458
Great an industry "professional" including the manufacturer (Ikegami and Sony) in this case don't know how to design nor measure a display?? The info below is based on comprehensive laboratory measurements and analysis using the advanced DisplayMate Multimedia Editions together with a Spectroradiometer. The articles are written by DisplayMate Technologies President, Dr. Raymond Soneira.
http://www.displaymate.com/ShootOut_Part_2.htm
"Television, DVD, Web and computer based photographic content are generally color balanced on professional CRT studio monitors that are electronically adjusted to have a standard Gamma of 2.20, so you'll get the most accurate images if your display also has this value."
"The Gamma for the Sony CRT agrees perfectly with the 2.20 standard value. (CRT monitors from Ikegami, another major brand of professional studio monitors, also have a Gamma of 2.20 according to their Director of Engineering.)"
Quote:
Originally Posted by andrewfee /forum/post/16940696
If I'm reading this correctly, the CRT was set to almost 200cd/m² with black above 0.7cd/m² in that test?
Quote:
Originally Posted by andrewfee /forum/post/16940696
I believe SMPTE requires monitors to be set to ≈100cd/m² (30fL) and the EBU specifies 80cd/m² for video white (100cd/m² for peak white) with a minimum of 1000:1 CR for grade 1 broadcast monitors.