Intuitively adjust the inverse negative flush effect in Photoshop
In fact, there are many tutorials in this area. Why did Ah Quan write this tutorial?
Actually, I think what they wrote is also very good, but some processes can be better. I think this process allows you to choose your own parameters instead of always Accept the parameters they say, such as “check ‘Invert’, use ‘Multiply’ as the blending mode, and set the opacity to 50%, confirm.”
Actually, we don’t know why we chose 50%, but the parameters they chose have good results, but not every photo is the same, so we have to find one The method is specific to the picture itself. I feel that the examples I saw are not intuitive, so I hope to tell you an intuitive method. The parameters of each photo are different, so we need to feel the process.
Before you start, you may wish to read the following two tutorials: An example of “reverse negative wash” portrait processing
Ah Quan summarized it, the main process is :1. Blue channel: apply image, select invert, and use Multiply in the blending mode , adjust the opacity yourself
2. Green channel: Apply the image, select Invert, use Multiply for the blending mode, adjust the opacity yourself
3. Red channel: Apply image, no need to invert, use color deepening in blending mode, adjust opacity yourself
A few simple words:
Blue and red should be inverted and multiplied, while red should be darker
The processing for each image is the same, but opacity is the most critical factor affecting the effect.
I’m not very satisfied with the process in the tutorial, so I hope to give you a better explanation of the process. Let’s take Lin Chiling’s version of the picture here, about the color scale. I will not talk about the curve adjustment. Here is a screenshot:
The first original picture:
Picture 2 Select a channel and the main screen will be grayed out:
But click on the eye of the RGB layer in the third picture, and the picture will be normal, but in the channel editing state:
No. 4 pictures Select blue channel, Image->Apply Image, Invert, Multiply:
The fifth picture deals with the transparency value and feels the changes in the picture:
Select the green channel, Image->Apply Image, Invert, Multiply:
The seventh picture deals with the transparency value and feels the changes in the picture:
For the 8th picture, select the red channel, Image->Apply Image, Color Burn:
The 9th picture deals with the transparency value and feels the changes in the picture:
The 10th picture completed:
The best thing about this process is that you can feel the changes in the picture and adjust it for each picture. I hope it will be useful to you. Help!
Feedback:
” The simulation of “reverse negative process” is as follows: First, we must simulate the visual feeling of the reversal film: the color saturation and density of the reversal film are greater than that of the normal photo, so we can: copy the original image layer to 50% positive film. Next, use it as a reverse film to make a “negative film”, that is: Ctrl I, invert. Put it into the LAB shared space to convert it, that is, use it as a negative film to map again. . Convert back to RGB and adjust the curve tone appropriately. This is what it looks like.
Maybe the color is different from the “invert negative wash” done above, but This is the most explainable “reversal negative charge” simulation process
Original picture:
“>
After completion:
Additional experience:
Adjusting in RGB mode will make the color of the picture lighter. Flat, after all, RGB mode is a plus-disperse blend.
So I tried to adjust it in CMYK mode. As expected, the colors became very bright, close to the real negative processing of reversal film. Effect.
The following are the pictures adjusted in CMYK and RGB modes:
Source: Blue Ideal (Changsha )
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