Use 6th Grade Maths to Match Color in Photoshop!
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Date: 2022-07-19
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Comments and reviews: 14
Maxximus
For the nerds among you:
The seccond method is simply a result of how photoshop handles colors and values.
If photoshop would allow negative values, method 1 would actually work for the seccond picture aswell
With negative values, i mean colors that are darker than black.
the only reason it doesnt work is because in the second picture the subject picture was lighter than the refrence image
If we use the first equasion for this: refrence - subject, the resulting value would be a negative value.
It would be like doing 1 - 2 which equals -1
Since photoshop doesnt allow for these values darker than black, it will default to black (0 in this case)
If photoshop would allow negative values, the first method would work perfectly
Because we all know from our 6th grade math that adding a negative number to a positive one results in a subtraction
for instance: (2) + (-1) = 1 ( the addition becomes a subtraction because youre adding a negative number)
So the linear dodge(add) blendmode would also result in a subtraction, which would give you the same result as with the second method, just with one workaround fewer: )
I should really get a life lol
reply
For the nerds among you:
The seccond method is simply a result of how photoshop handles colors and values.
If photoshop would allow negative values, method 1 would actually work for the seccond picture aswell
With negative values, i mean colors that are darker than black.
the only reason it doesnt work is because in the second picture the subject picture was lighter than the refrence image
If we use the first equasion for this: refrence - subject, the resulting value would be a negative value.
It would be like doing 1 - 2 which equals -1
Since photoshop doesnt allow for these values darker than black, it will default to black (0 in this case)
If photoshop would allow negative values, the first method would work perfectly
Because we all know from our 6th grade math that adding a negative number to a positive one results in a subtraction
for instance: (2) + (-1) = 1 ( the addition becomes a subtraction because youre adding a negative number)
So the linear dodge(add) blendmode would also result in a subtraction, which would give you the same result as with the second method, just with one workaround fewer: )
I should really get a life lol
reply
Michi
Wow. This tutorial blew my mind. It makes total sense. I was looking for a repeatable method to match skin tones of the same model in different scenes. And this solves the problem.
However! : Here is the challenge: Could this be automated somehow? Let's say I have a number of deliverable photos (say 200 pictures) of a subject in different settings under different lighting conditions. I want the skin tones of my deliverables to match. Ideally, I would like to determine one photo as the master and then have photoshop go through each of the other photos, create the mask over the skin, do the match and create the subtraction layer, etc. Anyone willing / able to create a solution for this? Unmesh? Adobe?
reply
Wow. This tutorial blew my mind. It makes total sense. I was looking for a repeatable method to match skin tones of the same model in different scenes. And this solves the problem.
However! : Here is the challenge: Could this be automated somehow? Let's say I have a number of deliverable photos (say 200 pictures) of a subject in different settings under different lighting conditions. I want the skin tones of my deliverables to match. Ideally, I would like to determine one photo as the master and then have photoshop go through each of the other photos, create the mask over the skin, do the match and create the subtraction layer, etc. Anyone willing / able to create a solution for this? Unmesh? Adobe?
reply
allen
This is brilliant. This is the best explanation of how the transparency modes work. I've always thought of it as mathematical in some way, but I could never zero-in on understanding it in 'logial statements like this. ' Now it make more sense.
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This is brilliant. This is the best explanation of how the transparency modes work. I've always thought of it as mathematical in some way, but I could never zero-in on understanding it in 'logial statements like this. ' Now it make more sense.
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Captain
Making the Substract Blend Mode work for you in that way is just ingenious.
Unmesh, you are amazing. Easily THE best Photoshop Tutor out there.
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Making the Substract Blend Mode work for you in that way is just ingenious.
Unmesh, you are amazing. Easily THE best Photoshop Tutor out there.
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RAWAR
Your handwritung is so cool and clean =) But the ways to manage skintones is a magic. It is wonderful. thanks for the knowledge and skills =)
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Your handwritung is so cool and clean =) But the ways to manage skintones is a magic. It is wonderful. thanks for the knowledge and skills =)
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David
omg this is GOLD CONTENT bro Im argentinian let me tell you something: now you are my new hero after messi, saludos mi rey
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omg this is GOLD CONTENT bro Im argentinian let me tell you something: now you are my new hero after messi, saludos mi rey
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Alvin
Crazy, Had no idea that you could do math in Photoshop.
Always learn something new when you drop a lesson.
Thanks
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Crazy, Had no idea that you could do math in Photoshop.
Always learn something new when you drop a lesson.
Thanks
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itech
enjoyed the video, but i feel like you'd benefit from easing up on the makeup. id say the same even if u were female.
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enjoyed the video, but i feel like you'd benefit from easing up on the makeup. id say the same even if u were female.
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Akshay
its not work on my, like i did same but it went whitish? not like full white but like white on skin with visible.
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its not work on my, like i did same but it went whitish? not like full white but like white on skin with visible.
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Chris
i have no words for this, it's like a lifehack on photoshop. it's always there but i never even thought about it.
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i have no words for this, it's like a lifehack on photoshop. it's always there but i never even thought about it.
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Vamshi
PiXimperfect What! Ii never knew that math would be this much useful in editing! You made it so much easy bro!
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PiXimperfect What! Ii never knew that math would be this much useful in editing! You made it so much easy bro!
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My
Didnt realise maths would ever make this much sense. I mean Im still confused but its making sense somehow
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Didnt realise maths would ever make this much sense. I mean Im still confused but its making sense somehow
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itech
Useful tips, but pretty sure math does not work that way. Nevertheless, beautiful hand writing. Thanks
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Useful tips, but pretty sure math does not work that way. Nevertheless, beautiful hand writing. Thanks
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Enoch
Hi Bro. both techniques doesn't work for me. In that case is there any other method to get the result?
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Hi Bro. both techniques doesn't work for me. In that case is there any other method to get the result?
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