Photoshop mask principle:
Photoshop mask converts different grayscale color values into different transparency, and applies it to the layer where it is located, so that different parts of the layer Transparency changes accordingly. Black is completely transparent and white is completely opaque.
Advantages of Photoshop masks:
1. It is easy to modify and will not be affected by Use eraser or cut to delete and cause irreversible regret;
2. Different filters can be used to produce some unexpected special effects;
3. Any grayscale image can be used as a mask plate.
Main functions of Photoshop masks:
1. Cutout;
2. Create the edge fading effect of the image;
3. Fusion between layers.
In this article we introduce how to use Photoshop masks to cut out images.
1. Open a picture in Photoshop;
2. First select the part that needs to be cut out. Due to time constraints, I used a simpler car and selected it with the pen (pen, path) tool;

3. Press ctrl+Enter (or press ctrl+click the path in the path panel; or click the "dashed circle" button below the panel), convert the path to a selection, and feather it appropriately (I Feather 1 pixel);
4. Double-click the background layer, confirm (or press Alt + double-click the mouse), and convert it to a normal layer;

In the previous steps, feathering is to make the edges of the cut out image smoother , you can decide the size by yourself, it can’t be too big, usually below 3 images, it depends on the size of your picture. Convert the background layer to a normal layer because masks cannot be applied to the background layer. Then, the key step arrives:
5. Keep the selection floating and click the "Add layer mask" button under the layer panel;

## The rough outline is cut out. Now I find that some parts have not been completely cut out, which is okay. At this time, the advantages of the template can be reflected.
Click on the mask (note that the symbol in front of the layer is different when the mask is selected than when the layer is selected, so be sure to make sure you are working on the layer and not on the mask before modifying), and click Select the unnecessary area, fill it with black on the mask, and the part will be trapped;
Now we find that the windshield of the car is not transparent (when the picture you cut out is merged with other pictures It will be very unrealistic). According to the mask principle, different grayscales of the mask affect the different transparency of the layer. We can use a brush or other tools to draw different levels of gray on the mask to adjust it.
Complete as follows:
In addition, when cutting out more complex pictures, such as human hair, plant branches and leaves, etc., you can convert the picture to different color modes such as CMYK or LAB to find a Adjust the Levels of the channel with the strongest contrast and clearest edges, then apply it to the mask, and then make further modifications.


Photoshop is very practical and creative in practical applications. 1) It provides basic editing, repairing and synthesis functions, suitable for beginners and professionals. 2) Advanced features such as content recognition fill and layer style can improve image effects. 3) Mastering shortcut keys and optimizing layer structure can improve work efficiency.

Advanced features of Adobe Photoshop include advanced selection tools, layer blending modes, and actions and scripts. 1) Advanced selection tools such as the Quick Selection Tool and the Color Range Selection Tool can accurately select image areas. 2) Layer blending mode such as "overlapping" mode can create unique visual effects. 3) Actions and scripts can automate repetition of tasks and improve work efficiency.

Photoshop's powerful functions in photo editing and enhancement include: 1. Use the "Repair Brush Tool" to remove acne, 2. Use the "Liquefaction Tool" to slim face, 3. Use the "Frequency Separation" technology to accurately retouch images. These functions are implemented through algorithms and image processing technology to optimize image processing effects.

Key features of Photoshop include layers and masks, adjustment tools, filters and effects. 1. Layers and masks allow independent editing of image parts. 2. Adjust tools such as brightness/contrast can modify image tone and brightness. 3. Filters and effects can quickly add visual effects. Mastering these features can help creative professionals achieve their creative vision.

Photoshop's applications in digital art include painting, illustration and image synthesis. 1) Painting: Using brushes, pencils and mixing tools, the artist can create realistic effects. 2) Illustration: With vector and shape tools, artists can accurately draw complex graphics and add effects. 3) Synthesis: Using mask and layer blending mode, artists can seamlessly blend different image elements.

Photoshop's advanced photo editing and synthesis technologies include: 1. Use layers, masks and adjustment layers for basic operations; 2. Use image pixel values to achieve photo editing effects; 3. Use multiple layers and masks for complex synthesis; 4. Use "liquefaction" tools to adjust facial features; 5. Use "frequency separation" technology to perform delicate photo editing, these technologies can improve image processing level and achieve professional-level effects.

The steps to using Photoshop for brand design include: 1. Use the Pen tool to draw basic shapes, 2. Add shadows and highlights through layer styles, 3. Adjust colors and details, 4. Use smart objects and actions to automatically generate different versions of the design. Photoshop helps designers create and optimize brand elements with the flexibility of layers and masks, ensuring consistency and professionalism of designs, from simple logos to complex branding guides.

Photoshop's subscription model is worth buying. 1) Users can access the latest version and use across devices at any time. 2) The subscription fee is low, and continuous updates and technical support are provided. 3) Advanced functions such as neural filters can be used for complex image processing. Despite the high long-term costs, its convenience and feature updates are valuable to professional users.


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