Can anyone explain with simple words and / or examples in which difference and effect of saturation and contrast are? If I turn in a Frame Contrast and saturation will turn up in both ways as the green -> green, red -> redder ... etc.
Thanks and regards, On axis
Antwort von dienstag_01:
At the same time increase the contrast in the image darker parts are made even darker.
Antwort von Axel:
... made even darker, and that is, decreases in the depths of the saturation, since it can have in the RGB model almost black color values a channel nohohen more. In the heights, but increases the saturation of all channels, since white means RGB full. It depends really on the subject, whether contrast enhancement leads to more subjective satiety, or of how the distribution center is on the gradation. Is the spread tends to bottom, the image is desaturated and subjective vice versa.
Antwort von marwie:
see eg http://de.wikipedia.org/wiki/Farbs%C3%A4ttigung vs http://de.wikipedia.org/wiki/Contrast
I would try to not only increase the contrast and saturation, but also reduce synonymous times, then you see the effect better.
Simplified one can say that with the saturation describes how an image is color, low saturation, the image black and white and very high saturation color.
The contrast describes the difference between the brightest and darkest point in an image.
Antwort von domain:
Any increase in contrast increases the saturation auto synonymous. This was positive in silver photography, the trick to getting rich in the colors: the negative had a flat gradation with all the advantages of dynamic range but the positive material abeitete always very hard. With the steepening of the same intense colors were synonymous. This is synonymous for us video enthusiasts. In a first step is always adjusted the contrast first, so everything s.besten bring in the waveform monitor between 16 and 235 and only then the decision is to possibly increase or decrease the color intensity. Most agree that is already the dyes in terms of saturation when the first time the true contrast.
Antwort von dienstag_01:
"Domain" wrote:
Any increase in contrast increases the saturation auto synonymous.
This is very simplified bissel. I can just synonymous increase the contrast by making dark areas darker, I (will say increased noSaturation). And in black and white film works, of course synonymous different.
Antwort von B.DeKid:
Furthermore, can only fine Contrast synonymous (contour) edges with more visibility - that's why there are as synonymous in Photoshop directly to the brightness control Contrast control.
Otherwise, see the comments.
MfG B. DeKid
PS: This might get worse but synonymous Grain / Noise words!
Antwort von domain:
Yes that's is already far easier than I talk to my general contrast of an image and non-professionals generally synonymous of this. Special s.den nonlinear contrast treatment of the primary 3-way brightness correction in the shade or in the highlights or even sharpening tools as micro-contrast edges are re-steepening of another chapter.
Antwort von B.DeKid:
"Domain" wrote:
Yes that's is already far easier than I talk to my general contrast of an image and non-professionals generally synonymous of this. .....
I found all the explanations here very well - just wanted to stop again address the issue because it too often this makes it obvious small errors and can cause unwanted effects.
MfG B. DeKid
Antwort von domain:
As always synonymous, one must have once understood: any contrast steepening always brings out the same time synonymous stronger colors. This goes hand in hand. With a steep graded luminance increases the Chrominanzeindruck basically synonymous. This is functionally coupled to each other.
Antwort von dienstag_01:
@ Domain
Take your time an image with a gray background color and 3 points (red, green, blue), all with full saturation values. And now even increase the contrast. Since noSaturation can be increased, but that is gray to black. Look again at the declaration of Axel, this is true.
Antwort von Auf Achse:
Thank you for your good explanations so I can start something! In Wikipedia I've browsed before I asked here, but there is quite the same scientifically. I stand much more on "learning by doing"!
Thanks and regards, On axis
Antwort von tommyb:
"Dienstag_01" wrote:
@ Domain
Take your time an image with a gray background color and 3 points (red, green, blue), all with full saturation values. And now even increase the contrast. Since noSaturation can be increased, but that is gray to black. Look again at the declaration of Axel, this is true.
Take you time a gray background and three circles cleanse (RGB) with "soft edge" (that is, with the course of transparency).
Increase the contrast and then note the otherwise "dull" and "achromatic" Verläfe of the circles.
PS: For the rest does the trick when the gray area is 128,128,128. Then it remains at a higher contrast synonymous gray and does not dim.
Antwort von dienstag_01:
@ Tommyb This was not a trick, here it was about the statement:
Quote:
Any increase in contrast increases the saturation auto synonymous.
And that's wrong. What is your example now, in this connection, I know not all conditions. Nice but the reference to the middle gray. This is just the limit for the Kontrastalghorythmus be.
Antwort von domain:
"Dienstag_01" wrote:
@ Tommyb This was not a trick, here it was about the statement:
Quote:
Any increase in contrast increases the saturation auto synonymous.
And that's wrong.
In the case of you described it is really wrong :-) But pure colors you'll never see in practice. They are, of course, already, either in a PC or RGB syntetic generated by monochromatic laser light. In all other cases, you will always get more colors by contrast steepening.
Antwort von dienstag_01:
@ Domain Mir gehts so synonymous is not about right or not right, but I have the question of the TS found that he wants to understand a few connections (and differences). Therefore there I hooked Sun Learning so synonymous still something there. :) By the way: I am filming some concerts, there is the before, that white is see above attack, but all ringsrum dull gray.
Antwort von Axel:
"Domain" wrote:
In all other cases, you will always get more colors by contrast steepening.
Where the colors are already strong anyway, that is above the middle, they are enhanced in contrast spread. That the lower middle and the depths are desaturated falls, not so considered. But one can see clearly the differences in the attachment. At (Photoshop) Contrast + 100% water, the sky and the green gaudy, dark palms are desaturated and the - in the original yellow - sand is white (original color loses its due to high saturation). The histogram shows that both clipping heights as synonymous depths and that the centers are thinned out.
In "saturation plus 50%" everything is colored, the dark palm trees just like the sand.
