Response Curves Tricks and Tips

5 min read
tatasz's avatar
By tatasz
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29 Comments
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A few tips and tricks on how to use curves to make your images pretty.

Disclaimer: the images below are not models of perfect curves, but just rough examples of some settings i find helpful.
Also, those are not any close to all possible magic things you can do with curves. Explore ^^


Add contrast to a light Image


Lets say you have a light image with few contrast.

Light Object by tatasz

Moving down the dark tones and maybe midtones nodes of the Overall curve will add contrast to it:

Light Object Contrast by tatasz Curves Contrast by tatasz


Make a dark image brighter


We may also want to do it the other way around: make a very dark image a bit brighter.

02 Dark by tatasz

Had to go a bit crazy to lighten this up:

02 Dark + by tatasz 02 Curve by tatasz


green Lights and purple shadows


You can also use the Green curve to add contrast:

03green by tatasz

Now add some green on highlights and remove some green on shadows to make it a bit more dramatic:

03green+ by tatasz 03curve by tatasz


Blue curve for warm lights


Sometimes, you may want some "warmer" highlights.

04blue by tatasz

Use Blue curve to remove some blue out of the highlights:

04blue+ by tatasz 04blue by tatasz

Comments29
anonymous's avatar
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BetiBup33's avatar
BetiBup33Hobbyist Photographer
Hi,

Sorry on questiona but I just start explore this beautiful software...
And I stack ar rotation image...

Alt+left mouse click is moving object
Alt+drag right click is zoom

Pleaes how rotate ??

I spend half a day.
Thanks
normanbird's avatar
normanbirdHobbyist Digital Artist
learning how to rotate is helpful. I had to export and use gimp to rotate. :-)
tatasz's avatar
tataszHobbyist Digital Artist
to rotate image, press both left AND right =D
BetiBup33's avatar
BetiBup33Hobbyist Photographer
Thank You very much... 
IAmThatStrange's avatar
IAmThatStrange Digital Artist
Thank you so much for the help with curves. 
tatasz's avatar
tataszHobbyist Digital Artist
=D not really a big help, just some directions ^^
a very powerful and handy tool
IAmThatStrange's avatar
IAmThatStrange Digital Artist
For me, any help is big =P (Razz) and greatly appreciated!
deadened-glow's avatar
deadened-glowHobbyist Digital Artist
I know 7x has the curves function too. Would this be similar to use in 7x?
tatasz's avatar
tataszHobbyist Digital Artist
Not sure... The 7x i use has no working curves
Steelsoldat's avatar
SteelsoldatStudent Artist
Sadly it doesn't, this is chaotica specific
HOWEVER it is possible to do in photoshop(maybe gimp?)
tatasz's avatar
tataszHobbyist Digital Artist
yup. although not always, because curves inside the software allow more things that you cant do later, like interaction with bg
Steelsoldat's avatar
SteelsoldatStudent Artist
I'm not sure how I like non transparent exports honestly
lyc's avatar
it doesn't work in high dynamic range though, so you'll get banding and can't really change the overall brightness.

that is, until chaotica does hdr output, which it really should have done aaaaaages ago...
Steelsoldat's avatar
SteelsoldatStudent Artist
Basically extremist curves
lyc's avatar
it doesn't really have to be "extreme" to benefit from greater accuracy, and in my opinion a better question is "why not have the rendering program do what it's supposed to, in high quality?"
Steelsoldat's avatar
SteelsoldatStudent Artist
extreme is always relative :P
Gerda1946's avatar
Gerda1946Hobbyist Digital Artist
Wow, possibilitiesBlue Hearts - Free to use by Undead-Academy
tatasz's avatar
tataszHobbyist Digital Artist
yeah =D
phoenixkeyblack's avatar
phoenixkeyblackHobbyist Digital Artist
Where do you find that response curve thingy? :slow:
phoenixkeyblack's avatar
phoenixkeyblackHobbyist Digital Artist
Oh - I thought it was a photoshop thing I hadn't found :slow:

I cant get my head around Chaotica :(
lyc's avatar
in the chaotica main window
phoenixkeyblack's avatar
phoenixkeyblackHobbyist Digital Artist
Oh - I thought it was a photoshop thing I hadn't found :slow:

I cant get my head around Chaotica :(
lyc's avatar
you should check tatasz's other tutorials, particularly the Editor Basics one which explains everything side by side with apo screenshots.

i think you'll be surprised how little there is to get your head around :)
anonymous's avatar
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