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Not sure if I shared this video on this newsgroup already, but I think
it gives a nice short introduction to why that "gamma" thing matters
(without mentioning the word "gamma", except in a single footnote):
https://youtu.be/LKnqECcg6Gw
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On 11/10/2017 15:35, clipka wrote:
> Not sure if I shared this video on this newsgroup already, but I think
> it gives a nice short introduction to why that "gamma" thing matters
> (without mentioning the word "gamma", except in a single footnote):
>
> https://youtu.be/LKnqECcg6Gw
>
Very interesting. Thanks.
--
Regards
Stephen
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On 11.10.2017 11:34, Stephen wrote:
> On 11/10/2017 15:35, clipka wrote:
>> Not sure if I shared this video on this newsgroup already, but I think
>> it gives a nice short introduction to why that "gamma" thing matters
>> (without mentioning the word "gamma", except in a single footnote):
>>
>> https://youtu.be/LKnqECcg6Gw
>>
>
> Very interesting. Thanks.
>
Same here: very interesting, thanks for the insight, Clipka. Well
appreciated.
---
Diese E-Mail wurde von AVG auf Viren geprüft.
http://www.avg.com
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clipka <ano### [at] anonymous org> wrote:
> Not sure if I shared this video on this newsgroup already, but I think
> it gives a nice short introduction to why that "gamma" thing matters
> (without mentioning the word "gamma", except in a single footnote):
>
> https://youtu.be/LKnqECcg6Gw
Interesting. I had already learned in Pov wiki that a human being doesn't
perceive the real world colors in a linear way, but I wasn't aware about what is
explained at the very beginning (the dark boundaries, when not taking gamma into
account and blurring an image).
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Really interesting--and a lot of info crammed into a short time-frame! (I wish I
could think and 'comprehend' that fast.)
I actually never took notice of the 'dark blending' that occurs between colors,
when blurring a colorful image in Photoshop (using its default gamma of 2.2).
VERY surprising and enlightening.
The 'perceived brightness of colors/grays' demonstration doesn't just apply to
computer monitors. I recently bought a super-bright multi-color LED 'stage
light' for use in the musical group I play in-- one of those lights with lots of
individual LEDs. It has a dimming function (all the way from full-on to
full-off, in 256 steps-- simple digital steps, probably.) The trouble is, most
of the *perceived* brightness change happens at the lower dimmed-down end-- just
like the video explains. Apparently, the designers of this light didn't take
into account the perceived-brightness phenomenon; they should have applied
something like a 2.2 power-law to the brightness steps.
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Le 17-10-15 à 09:21, Kenneth a écrit :
> Really interesting--and a lot of info crammed into a short time-frame! (I wish I
> could think and 'comprehend' that fast.)
>
> I actually never took notice of the 'dark blending' that occurs between colors,
> when blurring a colorful image in Photoshop (using its default gamma of 2.2).
> VERY surprising and enlightening.
>
> The 'perceived brightness of colors/grays' demonstration doesn't just apply to
> computer monitors. I recently bought a super-bright multi-color LED 'stage
> light' for use in the musical group I play in-- one of those lights with lots of
> individual LEDs. It has a dimming function (all the way from full-on to
> full-off, in 256 steps-- simple digital steps, probably.) The trouble is, most
> of the *perceived* brightness change happens at the lower dimmed-down end-- just
> like the video explains. Apparently, the designers of this light didn't take
> into account the perceived-brightness phenomenon; they should have applied
> something like a 2.2 power-law to the brightness steps.
>
>
Just another place where gamma considerations hit you unexpectedly...
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