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#apertus IRC Channel Logs

2014/06/21

Timezone: UTC


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intracube
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05:25
Bertl
off to bed now ... have a good one everyone!
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13:46
Bertl
morning folks!
14:53
intracube
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danhanes
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se6astian
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18:22
se6astian
good evening
19:41
troy_s
Greets all.
20:10
Bertl
hey troy_s! how's going?
20:11
troy_s
Bertl: Busy. You?
20:14
Bertl
Busy as well, as you probably read we have a lot of Beta preparations going on already
21:43
danieel
troy_s: transfer curve question... should a histogram be purely raw/linear, or accounting for transfer curve? (I would say color matrix is not desired here, as it is for correct exposure)
21:44
troy_s
danieel: Greets!
21:45
troy_s
danieel: A histogram is more of a statistical question, and it is an interesting one. I guess the best answer is that it depends?
21:45
troy_s
I suppose the question is really âWhat is the artist looking for when they are looking at a histogram?â
21:46
danieel
what is your preference? :) looking at raw ones, they tend to group on left... as 1 bit ~ 1 step occupies the whole right half
21:46
troy_s
And the intensity is, as odd as it sounds, not really the information conveyed in a histogram.
21:46
troy_s
danieel: When I use a histogram, it is usually in field.
21:47
troy_s
And I am specifically looking at the distribution of values to see if they are getting too close to the display referred maximums where the colors will suffer most serious crosstalk / spill, or too low where they are buried in fpn etc.
21:48
danieel
so then we should scale it nonlinearly, to make the x asis as linear exposure steps ?
21:48
troy_s
So for me (context) histograms are useful as a min (left) to max (right) (cultural note, possible design consideration here) distribution of values
21:48
troy_s
I personally would be able to read either
21:48
troy_s
Most are perceptual
21:48
troy_s
In my experience
21:49
troy_s
But linear can have use too, especially on the high end.
21:49
danieel
okay. so as long as one is used to the way we present, they will handle
21:49
troy_s
(Obviously harder to read the lower end using linearized values)
21:49
troy_s
Might be a great option?
21:49
danieel
yes, that is why I have asked
21:49
troy_s
Log versus linear
21:50
troy_s
I always try to defer design questions back to the audience. Who is your audience? If you answer that, you can at least make good guesses as to usefulness.
21:51
danieel
it is on the camera.. so the one looking at would be the dop or the assistant?
22:04
troy_s
DoP or DIT.
22:06
danieel
ah, okay... now I think i get what is DIT for... to check if the video clips :)
22:07
troy_s
Well they can handle more or less.
22:07
troy_s
And offer up issues.
23:31
se6astian
time for bed
23:31
se6astian
still watching football though :)
23:31
se6astian
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danhanes
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gwelkind
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00:50
gwelkind
changed nick to: FOSShill