1. Brightness is the relative brightness of a color, and saturation refers to the purity of a color (how much gray is contained in the color)
2. Blending mode
The color pixel of the underlying picture is called the "basic color"; the selected one is called the "mixed" color. For most of the blending modes, Photoshop generally follows the channel Compare the colors of the two layers.
Classification of blending modes:
##Basic blending mode Replace basic colors
Normal:All basic colors will be modified;
Dissolve: Use mixed colors to create dry brushes. The higher the opacity of the layer, the more uniform the color;
Darken blending mode to darken the basic color
Darken: Mix colors to darken the base color
Color Burn: Enhance by darkening shadow areas and raising areas. Contrast of the base color;
Dark:The mixed color replaces the lighter base color without affecting the darker base color;
Multiply: Dark blend color generates a darker base color; Light blend color is just a darkening of the base color, suitable for creating translucent shadows;
Linear Burning: Use blended colors to darken the base color by reducing the brightness;
Lighten blending mode improves the base color
Lighten: Only adjusts the base color that is darker than the blend color, and is darker than the blend color Bright basic colors are basically unaffected;
Color dodge:The brightness mixed color improves the basic color by reducing the layer contrast, and the dark mixed color will Apply a slight tint like the base color;
Light Color:The blended color will replace the base color that is darker than itself without affecting the base color that is lighter than itself Color, the blended color will be completely opaque and can be used to paint the underlying darker color without creating a selection;
Screen color:Lighter blended colors produce lighter colors The color can bleach the base color, and the dark blended color slightly improves the base color;
Linear Dodge (Add): Lighter blended color by adding layers Brightness to boost the base color, dark blend color to apply a slight tint to the base color;
Contrast blending mode enhances or weakens overall contrast
Overlay: When luminance (bright vs. dark) values are preserved ,Multiply darkens the basic color, and filters (lightens) the basic color to lighten it. Black and white pixels are not changed, so detail is preserved;
Highlight:If the blend color is brighter, filter out (brighten) the base color; if The blend color is darker and multiplies (darkens) the base color. Suitable for compositing effects or painting glowing highlights;
Linear light: If the blend is darker, deepen (darken) the base color by reducing the brightness; if the blend color is lighter , dimmer (lighten) the basic color by increasing the brightness;
Soft Light: Apply a bright tint to soften the basic color, while retaining the brightness value of the basic color;
Light: If the mixed color is darker, the basic color will be deepened (darkened) by increasing the contrast; if the mixed color is brighter, the basic color will be lightened (brightened) by reducing the contrast ;
Spot light: Replace the base color with a light blend color; Dark blend mode only applies a faint tint to the base color;
Solid Color Mixing: Dark mixed colors will produce more black in the base color, bright mixed colors will produce more white in the base color;
Contrast blending mode inverts the base color
Difference: Inverts the base color and the blended color, the brighter the blended color , the more saturated the final color is;
Exclusion: Convert the basic color to gray in areas where the mixed color is dim and invert the contrasting color in bright areas to reduce contrast;
Minus: A bright blended color will darken the base color; a dark blended color will darken the base color with its own inverted value;
Division: The lighter blended color will darken the base color; the darker blended color will retain the dark tones in the base color and bleach out all other colors;
Component Blend Mode applies a specific color component
Hue: Applies only the hue of the blended color, the saturation of the base color, and Luminance values will be preserved (white and black);
Saturation: Only the saturation of the blended color is applied, without changing the hue and brightness values of the base color;
Color: Apply the saturation and hue of the mixed color, retaining the brightness value (detail) of the base color, which can be used for coloring;
Brightness: The brightness value of several times the color will be replaced by the brightness value of the mixed color, and the hue and saturation in the basic color remain unchanged;
For more articles related to Photoshop’s blending modes, please pay attention to the PHP Chinese website!

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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.

You can get the access to Photoshop in the most economical way: 1. Experience the software features with a 7-day free trial; 2. Find student or teacher discounts, as well as seasonal promotions; 3. Use coupons on third-party websites; 4. Subscribe to Adobe CreativeCloud's monthly or annual plan.

Creating visual concepts in Photoshop can be achieved through the following steps: 1. Create a new document, 2. Add a background layer, 3. Use the brush tool to draw basic shapes, 4. Adjust colors and brightness, 5. Add text and graphics, 6. Use masks for local editing, 7. Apply filter effects, these steps help designers build a complete visual work from scratch.

Photoshop is not free, but there are several ways to use it at low cost or free: 1. The free trial period is 7 days, and you can experience all functions during this period; 2. Student and teacher discounts can cut costs by half, and school proof is required; 3. The CreativeCloud package is suitable for professional users and includes a variety of Adobe tools; 4. PhotoshopElements and Lightroom are low-cost alternatives, with fewer functions but lower prices.

Photoshop is worth the investment because it provides powerful features and a wide range of application scenarios. 1) Core functions include image editing, layer management, special effects production and color adjustment. 2) Suitable for professional designers and photographers, but amateurs may consider alternatives such as GIMP. 3) Subscribe to AdobeCreativeCloud can be used as needed to avoid high one-time spending.

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Photoshop can be used in web design to create high-fidelity prototypes, design UI elements, and simulate user interactions. 1. Use layers, masks and smart objects for basic design. 2. Simulate user interaction through animation and timeline functions. 3. Use scripts to automate the design process and improve efficiency.


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