Teach you how to give PS the ability to correct color-biased photos

This example introduces some empirical summaries of the use of PS correction bias graphs, color image correction is to learn Photoshop friends often contact with the problem, in this PS tutorial the author will learn to experience and common methods to share with everyone to learn and exchange, hope to bring help to friends ~ ~

The correction of color-biased images is a problem that you will be exposed to when you learn from Photoshop. It is also the problem of novice headache.

I also spent a lot of time in the study of the color, and began to hope to find some perfect tutorial system. Because I have a habit of learning Ps.

I do not care about the specific steps of the tutorial and care about the principle of each step. I want to know why every step is so. But it is regrettable that there seems to be no systematic theory on the color of the Internet. But many experience stickers are also very good. And after I read the Li Tao Tutorial. Some of the blending modes for colors

The color of the tutorial knowledge also has a relatively preliminary understanding.

Through their own practice on the color also has a certain experience. But their comparison is also PS beginners obviously can not write too profound theoretical things, but also just combined with the online learning a little experience and their common methods to simply introduce, hope to help the novice.

In fact, at the beginning of the PS color there is a misunderstanding, that the color of the picture, can be perfect color. Online said, as long as the definition of black-scale white plant neutral ash, you can what perfect color a picture. There are also some posts on the internet looking for neutral ash. At that time with the post do feel good effect, but changed Zhang Tu immediately. Especially the badly coloured graphs. No matter how you toss the effect must be no way to perfect.

Later know to look at the histogram after understand, the original seriously partial color of the picture. It must have been the result of a serious breach of a channel (or above). For example, the red image must be the blue channel is seriously damaged.

The blue channel of the following figure, the output color level of about 30 of the things basically all gone. In other words, this part of the color information has been completely destroyed, so I think even if the blue channel reconstruction, then you rebuilt the blue channel will be the original value of the photo? Obviously not. Information does not arise out of thin air. The information that has been destroyed cannot be reconstructed perfectly. So the correction of the color image of the individual feel that the general or their own visual experience. After all, the color of this thing more perceptual, there is no absolute one said otherwise there will not be so many colors of the tutorial as long as the visual feel comfortable picture is a good picture.

Let me introduce my own method

My tutorial is just to introduce a more general point of the tutorial, you do not care about the specific values. There are a lot of color methods, I just general introduction of my own use of the method, casually found 2 pictures to do 2 examples

1. First I will introduce a plug-in filter. There are many color-biased tutorials on the web. But with many of the pictures I can say in a complicated sense. The original photo was artificially destroyed

Such a. The general root does not get a situation where a channel is corrupted to 70%-80% of information loss.

So I usually take pictures of a slight white balance in a digital camera. Although the above method is also applicable, but for beginners must be like a fool style of things.

The color Efex PrO 3.0 filter is a great way to help you deal with the real color picture in your daily life, as shown in Figure 1:

Its professional contrast function is very powerful, for a slightly partial color of the picture can be said to achieve 1 key restore. (effect than PS matching color powerful contrast brightness adjustment complete) with PS action and batch processing, when you have the camera n need to deal with the picture of the time, its efficiency, the effect of perfect, let a person feel a word "cool".

2, the following is a very serious destruction of the picture.

When a channel is considered to deal with the appalling, or some mobile phone class camera in a special case out of the photo. The filter above is also unresolved. In principle, the more scientific approach is to draw a particular point of color. such as white, then the RGB value should be the same. The scientific method is the color sampling value

Draw a few specific points, white black gray place, individually adjust the levels of each channel or channel mix. But this method looks at the tutorial do feel also, but actually requires the novice to use any picture independently. It's still going to be very difficult.

So I also put aside these too cumbersome directly to their own visual feeling to operate.

Here's a look at this example

1. Look at the histogram of the example chart first.

Adjust the color bands of red and Green

2. New channel blending adjustment layer, add color according to histogram distribution. A picture of the red side. The red channel does not move. Green channel +20% Red (specifically how much you see the histogram do not rigidly adhere to the number) Blue channel plus 100% green.

When the 3-channel adjustment is similar, we'll find that the color is basically back.

But the picture must be a little bit of color, different pictures may be slightly red or more blue.

This is the time to make an image match. Select neutralization, the general warm picture he will be like the cold and cold of the picture will be like warm. Adjust fade to oneself to see after all comfortable to prevail.

Generally the color is complete, but the real problem is that the blue channel is rebuilt. There's always some unnatural place in the excessive color.

At this time of MM or there will be some slightly red, this map can be a new 1 color balance red add dot green can make the picture more natural.

But still feel the picture is less saturated contrast degree.

So what we're going to do is polish it. And here I do not do too much introduction, because the online color palette a lot of tutorials. And once the picture reaches this color level. Maneuverability will be very strong. That is to say, free play. Skin color, not too much need to adhere to what the tutorial, love how to play on the play.

I used the color Efex PrO 3.0 This filter, I usually after the matching color after the use of professional contrast or bias correction, adjust to look more comfortable, interested can try the photo style, the effect is very good. If you feel too gorgeous, you can adjust the opacity of the new layer.

Final effect

3, the disposal of garbage map

What is a garbage map, that is, almost all the channels are destroyed by the appalling. There is also in the reconstruction of the channel will find some colors appear serious color or color block or something. The picture has not been able to make the overall adjustment.

How do you get the picture? Someone might choose an optional color selection to set up a very different level of adjustment. My own way is usually to create a new color picture directly for coloring processing. Find a similar picture on the internet and draw it with a straw, and then apply the opacity of the adjustment. and the garbage map because the information destroys the serious precision is also very poor. Generally to the end must be to reduce the resolution before you can see.

This method is just next to the novice friend reference. You can try to see the effect yourself.

Some drawings that are adjusted by coloring:

This trash map is interesting to try down next

Category:

• PS Palette Tutorial