Infoseite // Changes your gamma curve?



Frage von FrankFaster:


Hi folks,
I did eventually talk times with a colleague. We have come to the theme "gamma curve". Exactly it was about to shoot, preferably with a flat gamma curve, as it can get more detail in bright image areas. A flat gamma curve cut off the picture but the color synonymous, which they then have a color correction in post production must reindrehen again.

Have you had experience with it? If so which ones?

Message FrankFaster

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Antwort von soan:

Hi.

With a flatter gamma curve you've synonymous little more security in the depths - that is as interesting for VDLSR. The compression of the zb h264 is just not without problems, and it is safer to use in post production a suitable color correction than risk already at record highs sunken depths or torn.

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Antwort von WoWu:

With a flat gamma curve you by limiting the Dynamics (aperture size) of your signal. This is no longer synonymous behind offset losses.
Flat gamma curves are advisable (and may be useful) for signals> 10 bits.

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Antwort von FrankFaster:

Hi Wolfgang,
Thanks for your reply. Can you do this with the dynamics a little? My SonyAX2000 characterized with the 24 bit.

The book I have sought at times to Amazon but I say that the recession but rather discouraging 30 Euronen make it loose. :)

Gruss Frank

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Antwort von prime:

"FrankFaster" wrote: My SonyAX2000 characterized with the 24 bit.
No only with 8 bits, both for luminance than chroma synonymous.
See:
http://en.wikipedia.org/wiki/ AVCHD # Specifications

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Antwort von WoWu:

Hi Frank,
You have to decide whether you know is worth ¬ 19.75, the cost of the download that is stronger compared to the print edition is 300 pages, this in Color and not from 2007 but up to date. And while "s.Interpunktion reviewer" is Spelling and stop, but not on substantive content that bothers me a little. Especially since the "reviewers" out here in the forum either by correctly spelling, punctuation and even even less with expertise does.
And the selling does not seem to affect it, because now, more than 1k of copies sold, two such faults to be aware and not to content.
There has to be so synonymous things in life that one s.Allerwertesten pass.

As for your question, it takes an 8 bit signal (3x8 = 24 bit) with a curved gamma curve (gamma 2.2) 10 f-stops (brightness values), which with a linear curve would not be possible. There you would be missing two values (aperture), because of course you have only 256 degrees.
In the Book were synonymous then the corresponding curves and details.
Therefore has a curved course of a gamma higher signal dynamics.

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Antwort von prime:

You certainly mean:
3x8 = 24 bits and 256 gradations appropriate.

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Antwort von WoWu:

:-) You see, that's to happen quickly, can catch even the button next to it. But fortunately we are not working in nuclear power plants.
Hab's grad then synonymous times corrected, thanks for the hint.

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Antwort von FrankFaster:

In any case, ever thank you for your help and full answers.
Whether I have understood all this now because I really am still not quite sure:)
Get me good times synonymous grow the online version of the Book.


Gruss Frank

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Antwort von iMac27_edmedia:

This depends of the shooting environment s.and the camera, but if I for example in the HM700 will gain a few dB, when I turn at night and want to capture as little noise, then yes, within certain limits.

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