Saturation limit

[oassayag]

Try to saturate more the ground.
There is a point when its quickly become reddish.
is there a way in photoshop to do a saturation limit so that it will saturate the color until one of its components reachs max. or something like that?

[Damo77]

Not that I know of, but now that you mention it, it would be a good idea!

Just gotta watch your info palette, I guess.

[tim]

Not automatically. I'd use a saturation adjustment layer, changing individual components (red etc) until it looked how you want.

[oassayag]

The problem is when i try to saturate soil color (brownish) it always comes out uneven.
is there a way to deal with complex colors like these?

[Damo77]

Saturation is not the answer. Use Curves or Levels to adjust the colours to your satisfaction.

[René Damkot]

Or, if you feel adventurous, give Lab a try.

[oassayag]

I want able to do it.
before red turns 255 , the image looks too reddish.
anyone can explain me how to do it exactly?

[basroil]

Pretty easy, get Lightroom. It has channel by channel HSL fixing in a very easy way... Or simply use photoshop's hue/saturation tool, then instead of using "master" change the drop down menu to what you need.

[Damo77]

No, I don't think saturation is the answer.

In Curves, nudge the middle of the red curve upwards a little. Then evaluate the colour - if it's too yellow, nudge the middle of the green curve downwards; if it's too pink, nudge the middle of the blue curve downwards. Then evaluate the overall exposure of the area, and nudge the middle of the RGB curve up or down as necessary.

[René Damkot]

No, I don't think saturation is the answer.

In Curves, nudge the middle of the red curve upwards a little. Then evaluate the colour - if it's too yellow, nudge the middle of the blue curve upwards; if it's too pink, nudge the middle of the green curve upwards. Then evaluate the overall exposure of the area, and nudge the middle of the RGB curve up or down as necessary.
Fixed ;)

[Damo77]

No, René, it wasn't a mistake. In my experience, if a red (particularly a skintone, but also soil in this case) is too yellow, it is much better to add magenta using the green curve, than to try to reduce the yellow using the blue curve. Likewise but vice versa for reds that are too pink.

[René Damkot]

Oh crap. I must have been half asleep... I see now that you typed "downward" where I read "upward" :o

My bad.

Edit: I'll just go edit my previous post then, so at least it'll have some semblance of sanity ;)

[Bobster]

or you were thinking CMYK :)

[Peano]

is there a way in photoshop to do a saturation limit so that it will saturate the color until one of its components reachs max. or something like that?


Open the histogram so it shows all channels. If you're saturating the red channel, watch that right edge of the red histogram. When you see a thin line start climbing up that edge from the bottom corner, that means you're clipping the red channel, so back off until that little line disappears. In this case, the histogram is pretty full, so you can't push red saturation very far before it will clip.

http://img243.imageshack.us/img243/3103/histoot4.jpg

Having said that, I don't think it's generally a good practice to max out saturation. I wouldn't do it for the red dirt in this image. You might get better overall colors if you use selective color adjustment layers. Here's an example (notice you can also put a little blue back in the sky with selective color):

http://img410.imageshack.us/img410/4779/color1lj2.jpg

http://img293.imageshack.us/img293/4286/color2sm8.jpg