Talk about the color correction
C enviable regularity "Working in Photoshop» pop up questions about color correction, and, when the questioner sent to search, then on his return, he wrote: "And there is not as much as I have!" - And some pozlobnee smiley face at the end. And sometimes immediately poses the question: "I have" discovered "for myself and find nothing suitable in it not found, why I wrote here ..."
In my opinion, this can occur in two cases:
absolute laziness (can not be cured)
lack of understanding of the foundations of correction, imaging, etc. (I would like that would be after reading this tutorial, the problem disappeared)
In this tutorial I will try to paint everything so that it would not be required to go into self-instruction, and the talk about the most important, in my view, instruments and their settings.
All screenshots are made in Adobe Photoshop Cs4. In previous versions, there can be differences (lack of some tools, etc.). On the substantive difference, huge, please write here - make notes.
For example, I used a photo from one of free photo stocks and sguglil somewhere in the color wheel. And if you decide to work with your images, you can replace the photo with the girl in any picture, but the color wheel, please change the color wheel.
I hasten to point out that all will be shown in the tutorial is not artistic value, but merely indicates the possibility of instruments and the process of working with them.
What is in the picture
Without this information, our "train is not going anywhere."
We will work in an environment RGB 8bit. For a start, analyze what makes up the image. Open any photo. And go to the palette «Window >> Channels». In the window that opens, you will see what is in the image in RGB format.
This is how Photoshop sees the files (note if you are working in a space CMYK or LAB, then these channels you do not see it).
In fact, the channel is a "mask" that overlooks one of the colors. Where the black color of the mask, the number of color channels in the overall image is minimal. Where the color white - the maximum. Whoever does not understand, take the following steps: create an image of any size and fill it with color # ff0000 (R: 255, G: 0, B: 0 - which means a maximum of red, blue, 0, Green 0). Then go to the Channels palette and you'll see that the red channel is white, and blue, and green - black.
All color correction is done by changing most of these channels.
Keep in mind the information about the channels and go to a color wheel.
Combining these black & white circles here, Photoshop provides all of this colorful beauty.
What we need to see: where is red, it is not blue, where there is a yellow, not blue, where there is purple, not green.
Perhaps at this point you do not understand ... But I think the situation will be corrected when we get down to business.
Histograms
Pictures of them are, but they give us information about them.
Histogram - graph of the distribution of brightness from 0 to 255 (total 256, for each pixel in the column). 0 - Left, Black. 255 - Right, White.
Let's see how the histogram will look at the various examples.
The histogram is uniformly distributed, that is, the same number of white and black elemntov.
Black picture:
One column in the pixel with the name of "0", because we only have black color.
Normal image:
The histogram is not evenly distributed. What is common to any photo.
Read more about how to use this information to be in the chapter on «Levels»
Variations
Open the image of the color wheel in Photoshop and go to «Image >> Adjustments >> Variations»
Let's go through the window on the most
I do not casually placed under a window «Variations», color wheel (slightly modified) As you can see, the signature colors are the same.
What can we do with this tool? Variations is best to change the color in general. Let's do our photo redder (zhmaknite by «More Red» three times, and Ok).
Before moving to the next step, I want what would you compare kolorizirovannuyu picture and normal (original and channels) using the information in the section "What is in the picture"
I fuck up the picture - now, let's return to her original form. It is possible for one simple reason: the information on the channels not shifted completely in black or white, so it really restore.
Only, here's the problem button «More Red» there, and the buttons «Less Red» no ... But! Remembering information from the section "What is in the picture." We have a button «More Cyan», and Cayan - this is the opposite color and exclusive Red, which means, «Less Red» = «More Cayan»
Zhmaknite three times on the button and get the same picture that was in the beginning.
I think on this, the analysis tool «Variations» finished. What are the main buttons and switches give it a try, where to apply - only your decision.
Hue / Saturation
Open the Photoshop color wheel, go to «Image >> Adjustment >> Hue / Saturation».
brother strips attention to "1" and "2". The first bar indicates a range of colors of your image, and below - what these colors izmentsya. In this screenshot all the colors match each other (red - red, blue - blue, etc.). I put the value «Hue» to -116. Look how different the second thread:
Now that all the red color will be replaced with blue, blue to light green, etc.
If you still do not understand how it works, move the slider «Hue» in the picture with the color wheel, see what happens. I am always happy. As played enough, press «Cancel», block color wheel.
C Using this tool it is possible to adjust not only the entire image but also the colors separately.
For clarity, open the photo with the girl and call «Hue / Saturation».
For selective color correction, it is necessary to specify a range, which we will adjust. Let's say I want to make a mountain red. To do this, c «Eyedropper Tool» select a color from the mountains.
But then Adobe did a little inconvenient - for that would select «Eyedropper Tool» c panel «Hue / Saturation» need, first, to choose something other than «Master» out of the window 3.
I chose «Reds», it became available «Eyedropper Tool» and I chose the color you want from the mountains. And he set the following parameters:
Here's what happened:
There were only two things that we have not talked:
«Saturation» and «Lightness».
«Lightness» adjust brightness, or rather, vybelyaet / blackens the image (that is, works as «Brightness / Contrast» when the «Use Legacy»). Need to adjust the brightness - use «Image >> Ajustments >> Brigtness / Contrast with disabled" Use Legacy "(This setting controls the version of" Brigtness / Contrast ", and if the option is enabled, the brightness control works in both versions Cs2 and earlier)" .
«Saturation» adjust color saturation. Slider to the right - the colors vigorously-toxic. Slider to the left - picture black and white.
How and where to use the tool - think for yourself.
Levels
«Levels», in the main, edit images with lack of white / black colors (including, channel by channel). Look at what looks like a histogram of the original image. It's all right. The histogram is uniformly distributed over the entire surface, so let's spoil the picture.
I filled the entire image in white with an opacity of 20%.
Go to «Levels».
The histogram is shown in the «Input Levels». On it, we see that in our picture there are no shadows (even if just to see the histogram, it is already clear that the photograph "whitish"). To fix this, you need to pull the left slider to the right until the lift chart bar chart. This way we like, stretch the histogram available on all 256 px.
Here's what will:
In my opinion, the picture is completely restored, but judging from the histogram, the impression is deceptive. Compare the histogram of the original and what happened with us.
Thus, I am filled with white photograph, she lost a lot of information, and Photoshop, it can not recover. The only thing that can Photoshop - this is distribute information about the brightness (without duplicating it). Hence the hole in the histogram.
So, to stretch the bars we could, but as they narrow down? This requires a strip «Output Levels»
I put in the left window «Output Levels» 48 and I got here that (the whole histogram suzilal by 48 px and stuck to the right, and, therefore, the shadows are gone.)
We have learned how to change the boundaries of the histogram, but the information inside gistogammy by «Levels» change is problematic.
C Use this tool to carry out selective color correction.
Open the original file with the girl. And open «Curves» («Image >> Adjustments >> Curves»)
Strips 1 and 2 show the brightness distribution. The second - the distribution of the brightness of the original image, and on the basis of the first correction will be made.
Let us, first, remove the shadow from the image (what we did in the «Levels»).
In the following screenshot I showed the basics of how to work the curves. We look at the second page - for each brightness level on it will fit another. To understand what you need to carry out such perpendiculars. From the next screen shots clear that the black in the picture is not all.
Now, let's see why curves are called curves and add the original image contrast.
In fact, to add contrast - a means to make the dark areas darker and lighter - lighter
Mentally, the perpendicular, that in the screenshot above, then it will become clear how to obtain such a result.
Now, selective color correction. We make mountains green and the grass more red.
Open the original image and «Curves»
To understand how the correction will be made, review the information from the theory (above).
I think you guessed it, that it is necessary to remove the blue mountains and add the green and the grass just add red.
Jump to the green channel. What would begin to adjust the brightness of a particular, it is necessary to put the cursor, which icon «Eyedropper Tool», then while holding «Ctrl» click to add a point to the secondary chart. It is very difficult to explain in words what to do ... Just try it, "potyrkaytes." At random study of such things - one of the best.
That's what I got:
C enviable regularity "Working in Photoshop» pop up questions about color correction, and, when the questioner sent to search, then on his return, he wrote: "And there is not as much as I have!" - And some pozlobnee smiley face at the end. And sometimes immediately poses the question: "I have" discovered "for myself and find nothing suitable in it not found, why I wrote here ..."
In my opinion, this can occur in two cases:
absolute laziness (can not be cured)
lack of understanding of the foundations of correction, imaging, etc. (I would like that would be after reading this tutorial, the problem disappeared)
In this tutorial I will try to paint everything so that it would not be required to go into self-instruction, and the talk about the most important, in my view, instruments and their settings.
All screenshots are made in Adobe Photoshop Cs4. In previous versions, there can be differences (lack of some tools, etc.). On the substantive difference, huge, please write here - make notes.
For example, I used a photo from one of free photo stocks and sguglil somewhere in the color wheel. And if you decide to work with your images, you can replace the photo with the girl in any picture, but the color wheel, please change the color wheel.
I hasten to point out that all will be shown in the tutorial is not artistic value, but merely indicates the possibility of instruments and the process of working with them.
What is in the picture
Without this information, our "train is not going anywhere."
We will work in an environment RGB 8bit. For a start, analyze what makes up the image. Open any photo. And go to the palette «Window >> Channels». In the window that opens, you will see what is in the image in RGB format.
This is how Photoshop sees the files (note if you are working in a space CMYK or LAB, then these channels you do not see it).
In fact, the channel is a "mask" that overlooks one of the colors. Where the black color of the mask, the number of color channels in the overall image is minimal. Where the color white - the maximum. Whoever does not understand, take the following steps: create an image of any size and fill it with color # ff0000 (R: 255, G: 0, B: 0 - which means a maximum of red, blue, 0, Green 0). Then go to the Channels palette and you'll see that the red channel is white, and blue, and green - black.
All color correction is done by changing most of these channels.
Keep in mind the information about the channels and go to a color wheel.
Combining these black & white circles here, Photoshop provides all of this colorful beauty.
What we need to see: where is red, it is not blue, where there is a yellow, not blue, where there is purple, not green.
Perhaps at this point you do not understand ... But I think the situation will be corrected when we get down to business.
Histograms
Pictures of them are, but they give us information about them.
Histogram - graph of the distribution of brightness from 0 to 255 (total 256, for each pixel in the column). 0 - Left, Black. 255 - Right, White.
Let's see how the histogram will look at the various examples.
The histogram is uniformly distributed, that is, the same number of white and black elemntov.
Black picture:
One column in the pixel with the name of "0", because we only have black color.
Normal image:
The histogram is not evenly distributed. What is common to any photo.
Read more about how to use this information to be in the chapter on «Levels»
Variations
Open the image of the color wheel in Photoshop and go to «Image >> Adjustments >> Variations»
Let's go through the window on the most
I do not casually placed under a window «Variations», color wheel (slightly modified) As you can see, the signature colors are the same.
What can we do with this tool? Variations is best to change the color in general. Let's do our photo redder (zhmaknite by «More Red» three times, and Ok).
Before moving to the next step, I want what would you compare kolorizirovannuyu picture and normal (original and channels) using the information in the section "What is in the picture"
I fuck up the picture - now, let's return to her original form. It is possible for one simple reason: the information on the channels not shifted completely in black or white, so it really restore.
Only, here's the problem button «More Red» there, and the buttons «Less Red» no ... But! Remembering information from the section "What is in the picture." We have a button «More Cyan», and Cayan - this is the opposite color and exclusive Red, which means, «Less Red» = «More Cayan»
Zhmaknite three times on the button and get the same picture that was in the beginning.
I think on this, the analysis tool «Variations» finished. What are the main buttons and switches give it a try, where to apply - only your decision.
Hue / Saturation
Open the Photoshop color wheel, go to «Image >> Adjustment >> Hue / Saturation».
brother strips attention to "1" and "2". The first bar indicates a range of colors of your image, and below - what these colors izmentsya. In this screenshot all the colors match each other (red - red, blue - blue, etc.). I put the value «Hue» to -116. Look how different the second thread:
Now that all the red color will be replaced with blue, blue to light green, etc.
If you still do not understand how it works, move the slider «Hue» in the picture with the color wheel, see what happens. I am always happy. As played enough, press «Cancel», block color wheel.
C Using this tool it is possible to adjust not only the entire image but also the colors separately.
For clarity, open the photo with the girl and call «Hue / Saturation».
For selective color correction, it is necessary to specify a range, which we will adjust. Let's say I want to make a mountain red. To do this, c «Eyedropper Tool» select a color from the mountains.
But then Adobe did a little inconvenient - for that would select «Eyedropper Tool» c panel «Hue / Saturation» need, first, to choose something other than «Master» out of the window 3.
I chose «Reds», it became available «Eyedropper Tool» and I chose the color you want from the mountains. And he set the following parameters:
Here's what happened:
There were only two things that we have not talked:
«Saturation» and «Lightness».
«Lightness» adjust brightness, or rather, vybelyaet / blackens the image (that is, works as «Brightness / Contrast» when the «Use Legacy»). Need to adjust the brightness - use «Image >> Ajustments >> Brigtness / Contrast with disabled" Use Legacy "(This setting controls the version of" Brigtness / Contrast ", and if the option is enabled, the brightness control works in both versions Cs2 and earlier)" .
«Saturation» adjust color saturation. Slider to the right - the colors vigorously-toxic. Slider to the left - picture black and white.
How and where to use the tool - think for yourself.
Levels
«Levels», in the main, edit images with lack of white / black colors (including, channel by channel). Look at what looks like a histogram of the original image. It's all right. The histogram is uniformly distributed over the entire surface, so let's spoil the picture.
I filled the entire image in white with an opacity of 20%.
Go to «Levels».
The histogram is shown in the «Input Levels». On it, we see that in our picture there are no shadows (even if just to see the histogram, it is already clear that the photograph "whitish"). To fix this, you need to pull the left slider to the right until the lift chart bar chart. This way we like, stretch the histogram available on all 256 px.
Here's what will:
In my opinion, the picture is completely restored, but judging from the histogram, the impression is deceptive. Compare the histogram of the original and what happened with us.
Thus, I am filled with white photograph, she lost a lot of information, and Photoshop, it can not recover. The only thing that can Photoshop - this is distribute information about the brightness (without duplicating it). Hence the hole in the histogram.
So, to stretch the bars we could, but as they narrow down? This requires a strip «Output Levels»
I put in the left window «Output Levels» 48 and I got here that (the whole histogram suzilal by 48 px and stuck to the right, and, therefore, the shadows are gone.)
We have learned how to change the boundaries of the histogram, but the information inside gistogammy by «Levels» change is problematic.
Curves
C Use this tool to carry out selective color correction.
Open the original file with the girl. And open «Curves» («Image >> Adjustments >> Curves»)
Strips 1 and 2 show the brightness distribution. The second - the distribution of the brightness of the original image, and on the basis of the first correction will be made.
Let us, first, remove the shadow from the image (what we did in the «Levels»).
In the following screenshot I showed the basics of how to work the curves. We look at the second page - for each brightness level on it will fit another. To understand what you need to carry out such perpendiculars. From the next screen shots clear that the black in the picture is not all.
Now, let's see why curves are called curves and add the original image contrast.
In fact, to add contrast - a means to make the dark areas darker and lighter - lighter
Mentally, the perpendicular, that in the screenshot above, then it will become clear how to obtain such a result.
Now, selective color correction. We make mountains green and the grass more red.
Open the original image and «Curves»
To understand how the correction will be made, review the information from the theory (above).
I think you guessed it, that it is necessary to remove the blue mountains and add the green and the grass just add red.
Jump to the green channel. What would begin to adjust the brightness of a particular, it is necessary to put the cursor, which icon «Eyedropper Tool», then while holding «Ctrl» click to add a point to the secondary chart. It is very difficult to explain in words what to do ... Just try it, "potyrkaytes." At random study of such things - one of the best.
That's what I got:
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