How to convert mobile phone APP filter into 3D LUT

You need to use a special retouching tool to convert the mobile phone APP filter into 3D LUT: 3D.

There are many softwares for making LUTs, such as LUTCalc and 3D.

LUT

Creator and others are tools specially used to make such documents;

After the phone is adjusted, click the picture export button in the lower right corner.

Here, instead of choosing to export pictures, you choose "Save Edits as Filters"-"Save to My Filters".

RGB standard is one of the most commonly used standards in the field of photography and display. In the RGB standard, all colors are actually composed of three colors: R (red), G (green) and B (blue), from which photos come.

Three-dimensional (abbreviation for three dimension)

The "3D" in the LUT refers to this, and the full name of the "LUT" behind it is "

check

Table ",so three-dimensional.

LUT is translated into a color lookup table.

Suppose in the color lookup table, its definition is as follows:

When R=0, output r =10;

When G=0, the output is g = 21;

When B=0, output B = 9；;

Then, when R= 1, continue until each RGB value can output another new RGB value, which constitutes a complete color lookup table.

When this lookup table is applied to a photo, the black RGB (0,0,0) in this photo will become dark green RGB (10,21,9).

You can think of LUT as a filter and use it to filter. Three-dimensional (abbreviation for three dimension)

The most widely used field of LUT is still in the video field, because it relies on the lookup table of mathematical model, so the rendering speed is faster, and the color and exposure of video can be rendered quickly.

When shooting a video, the log format is usually used to shoot, so the shot picture will be "gray", and the advantage of gray is that there are enough details recorded. This is a bit like the RAW format when we take pictures, although RAW is far less gray than Log.

take for example

This picture is made by imitating the log format with a picture in ordinary RAW format. You can see that the picture is gray and the highlights don't overflow in the dark. Isn't this the basic standard of a good photo in people's eyes? However, this color is not so good.

The picture below is the picture after applying LUT from the above picture, which is rich in color and looks better.

This is the power of LUT, which can output video works efficiently and quickly, but for us who don't shoot video very much, it is more used in the field of images.

To modify (a picture or photograph) with a computer.

Open the picture in Photoshop. Of course, if you want to get the original "film sense", it is recommended to put the picture in the camera first.

Gray photos in RAW, that is, reduce contrast, reduce highlights and white, and enhance shadows and black.

Click the button in the lower right corner and select "Color Search".

Then select the 3D you want.

LUT files will do.

Photoshop supports manual addition. Just find Presets\3DLUTs in the installation folder of Photoshop and throw the LUT file you collected from the Internet.