I would like to give you a detailed analysis of photoshop software users and share a tutorial on how to adjust the color of industrial films to change the camera photos to a large screen in seconds.
Tutorial sharing:
Film color and film color have always been the favorite style of many photographers. There are various color schemes, and different photos have their own preferences. Today, we will explore how to convert the Raw format to LOG format, and then use 3D LUT to implement the film-level tones. This way of color is also the gospel of tossing the party. Although today's explanation is difficult for beginners to color, it still touched the threshold of industry-level color. There is no doubt that some high-quality LUTS have taken into account the aesthetic quality, and there is no need for any clever color-biased means, so that they can be comparable to the film-like colors in a short time.
First, let's start with our ideas. The idea for a single-lens SLR camera to achieve cine-level color is simple: The camera uses Raw format, and the Raw negative is converted to the camera DCP calibration file in ACR or LR; after conversion, import the color search table in PS to overlay the 3D LUT style file for color coloring: output Raw-> convert LOG-> overlay LUT. Now that you know the method, however, we cannot know why, so we need to pave the way for some preliminary knowledge. The film industrialization process will be involved here, so that everyone can have an impression.
1. What is LOG format?
The word LOG comes from the word Logarithm, which is the Logarithm. It is essentially a smooth S curve. This LOG algorithm encoding has the characteristics of "global dynamic range. The camera can change the captured image information material to "gray" and "flat". Although it looks gray, it records and holds more details of the bright and dark parts. Generally, there are 12-level film widths, and only five digital videos. In 1990s, Kodak used a curve to compress digital video signals until the appropriate size. The digital LOG encoding is compressed by contrast. This curve lowers the highlight, brightens the dark part, and tries to keep the details of the intermediate tone as much as possible. Therefore, the LOG format video signal looks gray. Based on the compression of a large amount of video signal data, the LUT of matching LOG format materials and loading the corresponding standard process can be correctly displayed and formatted for the film. To achieve film-like effect. Of course, with the advancement of technology, the current camera is becoming wider and wider, and the LOG color space has become wider and wider, and the colors of professional films are becoming richer and richer.
Comparison between LOG mode and later color matching
Why is the LOG format popular now, because LOG shooting can retain more exposure, store more color space, width, and other image information, making it easier to create later stages. Currently, the colorist industry is very fragrant, with a low color budget at all, and even a movie's color budget can reach millions of dollars. All LOG-mode shooting requires a later color, giving the director or colorator more room for creation. Create colorful images.
2. What is 3D LUT?
LUT is the abbreviation of "Look Up Table ". Open this LUT file and you will find a bunch of values in it. This is a bunch of original RGB values, and the input values of these RGB values will be converted into new output values. In essence, it is to convert the effect of one color into another color effect (or convert the gray value to another gray value ). Of course, LUT is also categorized. There are 1D LUT and 3D LUT respectively. 1D LUT can only control the gamma value, RGB balance (gray scale) and white point, while 3D LUT can control the color phase, saturation, brightness, and so on in a full three-dimensional color space. In brief, 3D LUT can affect the color, while 1D LUT can only affect the brightness value. 1D LUT changes a color input value only affects the color output value. RBG data is independent of each other.
Reduced to 1D LUT
Changing a color value in 3D LUT will affect three color values. That is to say, any color change will change other colors.
3D LUT
However, we can find that most networks use 3D LUT presets, because 3D LUT can only be used to adjust colors in addition to brightness.
III. LUT application
LUT can be used in three ways: (1) calibration (calibrtion LUT), mainly used for color management hardware and display equipment calibration; (2) technology (Technical LUT ), it is mostly used for conversion under different color spaces and different characteristic curves. (3) Creative LUT/Looks LUT, LUT made to implement a specific style, the photography guide creates a LUT that can be previewed in the early stage. Currently, the XXX thousands of film LUT presets popular on the Internet are the third type of LUT. This kind of provisioning is simple and crude, and can be applied directly to weddings, low-cost advertisements, celebrations and so on. The industrial-level color matching process of the film has strict requirements on specifications. The specification is used for better effects. Therefore, no matter how the camera outputs, monitors, or colors are later, the LUT file sorting specifications must be set. Of course, what we are talking about here is how to use a SLR to achieve a film-level tone. So we can directly simplify the process. Use 3D LUT presets to simulate film tones .? How to apply the LOG format converted from the SLR camera (1) Download: VisionLOG file. (2) decompress the package and get a folder. Copy the folder:
Mac OS: HD:/Users/yourusername/Library/ApplicationSupport/Adobe/CameraRaw/CameraProfiles
Windows: C:/Users/yourusername/AppData/Roaming/Adobe/CameraRaw/CameraProfiles
(Note: change yourusername to your computer user name. The following is also the case. I will not remind you again, for example, my name is C: /Users/16xx8/AppData/Roaming/Adobe/CameraRaw/CameraProfiles)
(3) Download: 3D LUT preset file. (4) add the 3DLUT directory in Photoshop -- X:/Adobe Photoshop CC 2015.5/Presets/3 DLUTs
Next, call a Raw file, which was taken by Nikon or canon. Select LOG mode in the following camera calibration. Of course, if VisionLOG does not have a file of its own camera model, it is a pity that ACR cannot recognize it. But it doesn't matter. We will later say that we can decompile a LOG camera file by ourselves.
In this way, the photos are dimmed and flattened. Of course, you can also press the highlights, highlight the shadows, and restore a large number of details in the basic panel.
Then, we press SHIFT to open the image and happily enter Photoshop (holding SHIFT to enter the Photoshop image will become intelligent object mode, and we can call camera Raw for modification at any time if we are not satisfied with it ). Then open the color search table in Photoshop. Layer-New Adjustment Layer-color search:
Click load 3D LUT, and select various LUT for superposition.
Note that the color search layer can be superimposed, and the opacity can be adjusted to affect the color search layer. The layer blending mode can be used to affect the color filter, overlay, and softening ). After the adjustment, since it is a film-level color, should we add black borders and add more words? This is the simplest style color for a movie, of course, this is just a process demonstration, and the effect is not very good.
? How to create a 3D LUT file using the color search table in PS, and then how to apply the LOG format converted by the SLR camera, we continue to say how to create a 3D LUT file using the color search table in PS. First, you have created a color scheme by using the adjustment layer in Photoshop (some may ask "how to save it as a 3D LUT file", which has been solved by Photoshop after version 2014 ).
Create a series of new adjustment layers for color. Of course, you can also use 3D LUT color. Remember, you only need to create and adjust layers. After the color. We start to export to the color search table.
Open Photoshop first. Remember to include the built-in background layer, that is, simply open the image.
Click it to save it to the location you can find. Then you will get a file in CUBE format, which is 3D LUT. We can load this file at will, for example, the effect I want to load on another photo of myself.
Loading the LUT directly is a bit overexposed. Let's use a tiny magic-adjust the curve. In minutes.
4. How to use 3D LUT for fancy color in PS
There are many ways to solve this problem. For example, use a brightness mask + 3D LUT to perform more precise attacks. At the download address at the beginning, I have already put the brightness mask action for your convenience (here we will not put the plug-in panel, and the panel installation is a little more complicated. Not every version of PS can be used ). Download this action from the previous connection and load it to PS:
By performing the following actions on the example graph, we can get the following Magic film.
Load these constituency, and we can color any brightness area.
It is very easy to apply this method. On the Channel panel, press Ctrl to highlight Channel 1 and click the left mouse button. When you see the ant line, it indicates that the selected area is obtained.
After obtaining the selection area, we will go back to the curve adjustment layer on the layer panel, the color balance adjustment layer, and even the 3D LUT Adjustment Layer. Then, we can adjust the area and reach the magic.
In this way, we can color and expose any area. This is also the so-called partition color, partition exposure, and is often used in the field of landscape. Of course, we can use it here.
V. 3D LUT preview
To help you better understand the color of 3D LUT, I made a search table to preview the LUT table. Place the commonly used LUT files to facilitate preview (the download address is still at the beginning ). The LUT file and PSD preview are packed in the package. You can also put your favorite LUT in the PSD preview or change the photos in the smart object to make your own style LUT table.
Of course, there is also a black technology that can easily preview the LUT file.
This black technology is called 3 DLUT Creator and is a software for editing and analyzing 3D LUT. You are charged for the genuine version, but you still have a trial version of the Demo version. You can simply analyze or preview the LUT file. If you want to save the edited LUT file, you need to purchase a genuine version. Generally, the Demo is sufficient for analysis or preview. (Of course, I also packed the Win version of this software Demo in the front download address. Download it as you like .)
How can we use 3 DLUT Creator to preview the LUT photos? First, open 3 DLUT Creator, and then open the picture you want to preview in PS.
Switch back to 3 DLUT Creator, click the mask panel, and then click Imge from ps. In this way, you can put the photos in Photoshop into the 3 DLUT Creator. Of course, if you do not need PS, you can also click Load Image to directly select the photo you want to preview LUT.
This step is only used to associate PS with 3 DLUT Creator for better LUT editing. We can edit in PS and analyze it in 3 DLUT Creator in real time.
Next we select Input output under External 3D LUT.
Click load LUT. Call the folder where the 3D LUT you want to preview is located. Here I directly select the folder where 3D LUT is placed in Photoshop.
Next we can happily click the <> button to select the LUT. Although it is not convenient to use a LUT table, it basically meets the requirements.
6. Color of 3D LUT
Why is it true that 3D LUT is used as a photo color? It is very simple. LUT is used not only for color, but also for calibration and uniform display of the same color for different devices. Or the live shooting will temporarily attach the color to the scene for observation. Color is only one of the purposes of the partition. In other words, how can we use 3D LUT photos for better color? Here are some personal understandings and ideas for your reference.
3D LUT color is suitable for low-key and mid-tone photos. If it is a high-profile film, it is useless to enrich the LUT color offset. 70% early lighting, 30% late polishing. Especially for films that want to highlight the Comparison of temperature and cooling, the light source is very important in the early stage. For example, some of the Hobbit scenes that look at the comparison of temperature and cooling look very comfortable. These scenes need to be played by lighting with different color temperatures in the early stage. As a basis for comparison, if the entire screen is very flat and the color is single, LUT cannot be used to produce much dramatic effect.
Let's start with a case. First, create a Color adjustment search layer in Photoshop. Here I chose Kodak Elite Color 200_FPE.cube in ImpulZ-Canon VisionLOG Raw. This film is compared to blue-orange. Similar to the scene at that time. The source film is shot in a warm-colored street lamp. After the character is an incandescent lamp, it is a cold light source, so the early light is full. The bottom is almost the same.
However, looking at the histogram, we can see that both the dark part and the highlight are compressed. So the next step is to adjust the brightness value of the photo using curves, colors, and the like. According to the histogram, I used the curve to adjust the brightness of the screen, and the screen obviously increased the comparison. But some details are still not pressed out. Regardless of it, first stamp it.
After the screen is printed, use the curve to enter the brightness mask operation, and press the brightness mask on the highlighted area and the intermediate area. Press the dark button to continue to gray, and then I add a contrast LUT in the dark area for comparison. If the screen is not warm enough, add an orange solid color layer mask to the highlighted area and then extract the orange color.
Continue to add LUT, add two LUTS, one is to highlight the skin color, hair color. One is to add blue in the dark. Add a gradient layer to the light source. The basic color is almost the same.
At last, the watermark is stamped with particles and black edges to reduce noise and sharpen the output. Complete.
The whole article is almost over here. Here we should mention it. It's okay to play and make a try in this way. However, the actual application is still insufficient to cope with all situations. If a photographer depends only on presets, something will never be reached. Aesthetic quality is not achieved with one click. I am chasing Xiaofeng. You are welcome to join me. If you have any questions, you can also contact me. Weibo: @ photographer chasing Xiaofeng.
What if your camera does not have the corresponding VisionLOG file? It doesn't matter. At the end of this article, we will teach you how to decompile LOG files.
Appendix: How to decompile the camera LOG file by yourself (technical Post)
What if my camera does not have VisionLOG? We can do one by ourselves, though. This is not standardized. But since yes? Pan Kanda's concave pocket bag? D. Lip? Noisy parameter? Jian U said sorry, why does the infrastructure seem to be okay? Vibadi kangmeng.
Next, go to the actual operation .? First Download dcptool. I have packed the package (I am almost touched by myself). The Download address is still at the beginning of the post .? After downloading, decompress the package to get a dcptol, and put the dcptool folder under the root directory of the D disk (that is, directly root directory, without outsourcing any folder )? Then, the sample VisionLOG_5DMkII.dcp will be converted to dcptool. The sample DCP file can be extracted from the VisionLOG folder (that is, the VisionLOG compressed file in the download address ).
Next let's start:
1. Start the command prompt (usually press win key + R, and win key is the key of flag)
2. Enter cmd and press Enter. A black command box is displayed.
3. Enter d: enter disk d, and then enter cd dcptool to enter the folder.
4. Decompile the file into XML: dcptool-d VisionLOG_5DMkII.dcp VisionLOG_FujiXT1.xml. Press Enter. You can also name your camera name, for example, dcptool-d VisionLOG_5DMkII.dcp VisionLOG_d810.xml. Press Enter.
5. After completing Step 4, we obtain a file named VisionLOG_FujiXT1 in dcptool.
Open it in Notepad and pull it to the end.
Find the sample camera model and change it to your own camera model. For example, if your camera is Nikon D7100, change Canon EOS 5D Mark II to Nikon D7100 and save it. (the model name must be aligned, one word less than one symbol cannot be recognized ).
How do you determine your Camera model? If you do not know your Camera model, you can find your own Camera model in Camera raw, click it without missing a word, and save it.
Then re-compile to dcp: dcptool-c VisionLOG_FujiXT1.xml VisionLOG_FujiXT1.dcp, and press enter. Return to the dcptool folder. We can see that you have obtained the DCP file preset by LOG of your camera model.
Where can I put this file? As mentioned above. Put it in the VisionLOG folder in C:/Users/yourusername/AppData/Roaming/Adobe/CameraRaw/CameraProfiles.
Another method is to convert the log format of another camera to the log format applicable to your camera model. This software is called DNG Profile Editor. This software is included in the download address of this article, which is used by Adobe to make it easier for photographers to edit their camera color configuration files.
First, we need to find a raw image and convert it to the format in camera raw or LR. Convert to dng format.
Then open DNG Profile Editor. Click open dng inage in the file column to open the dng format photo we just converted.
Click base proflie and select Choose external profile from the drop-down list.
Click Choose external profile and select the VisionLOG file we downloaded. Select a dcp file. Here I select the 5D3 DCP file.
OK. After the selection, the screen is obviously grayed out. .
Then select Export canon EOS 5D Mark II proflie in the file. Export the DCP file.
Save in:
Mac OS: HD:/Users/yourusername/Library/ApplicationSupport/Adobe/CameraRaw/CameraProfiles
Windows: C:/Users/yourusername/AppData/Roaming/Adobe/CameraRaw/CameraProfiles
Remember that the saved name is VisionLOG_XXX (XXX is your camera model. If you do not know your camera model, you can go to camera raw for query. This model is named by the manufacturer. It cannot be identified if there is less than one word .)
Okay, the above information is the detailed industry-level film coloring tutorials that let the camera photos change to the screen effect in seconds for all photoshop users, you can see the software users here. I believe that you are very clear about the later color tutorial, then everyone should try the effect according to the self-tuning shared above.
