Simulating color blind vision: recolor/HSL/channel mixer

[JJS]

Hi Folks,

 

what is the best way to simulate color blindness in AP (no difference seen in red-green, or blue-yellow are the most prominent problems people suffer from) ? 

I assume it is a question of using adjustment layers the right way, but I do not know where to start.

Simply turning down eg. red & green in the channel mixer doesn´t do the trick. I assume the red and greens need to be mapped to a grey, but how do I do this?

 

Many thanks and regards,

 

Jörg

 

 

 

[v_kyr]

Don't know if this may be of any help for you, but you can search the forum and internet after this topic. - See also this.

[Gabe]

Hi @JJS,

Welcome to the forums. 

You can use the Channel Mixer, with 50% red and 50% green for both Red and Green channels. That should be close to what you want to achieve. 

Thanks,

Gabe. 

[ashf]

On 10/16/2018 at 7:16 AM, Gabe said:

Hi @JJS,

Welcome to the forums. 

You can use the Channel Mixer, with 50% red and 50% green for both Red and Green channels. That should be close to what you want to achieve. 

Thanks,

Gabe. 

50% red and 50% green is very different from Photoshop's color blind simulation.
Would be nice if you cloud provide more precise data.

[firstdefence]

It would be easier to use LUTS: Color_Blind_Color_Lookup_Tables_3DLUT_LUT_CUBE_HALD.zip

Unzip the LUTs, to test, open an image, use the LUT... adjustment filter and load one of the cube files.

You could have a LUT… adjustment filter for each type of colour blindness, you can then turn them off or on to suit and place images below to test.