Blending Modes在圖像編輯中通過(guò)改變圖層像素的相互作用實(shí)現(xiàn)不同的視覺(jué)效果。 Multiply模式通過(guò)相乘亮度值使圖像變暗，適合陰影和紋理疊加；Screen模式則通過(guò)反轉(zhuǎn)、相乘、再反轉(zhuǎn)的方式使圖像變亮，適用於高光和發(fā)光效果；Overlay模式結(jié)合Multiply和Screen，對(duì)暗調(diào)應(yīng)用Multiply、對(duì)亮調(diào)應(yīng)用Screen，適合增強(qiáng)對(duì)比度或細(xì)節(jié)修飾。選擇合適的模式取決於所需效果，如Multiply用於陰影、Screen用於提亮、Overlay用於對(duì)比增強(qiáng)，其他模式如Soft Light、Hard Light和Color也各有用途，實(shí)際使用時(shí)可通過(guò)預(yù)覽循環(huán)嘗試不同模式以獲得最佳效果。

Blending Modes in image editing software like Photoshop determine how the pixels on one layer interact with the pixels in the layers below. Understanding how they work can give you more control over color correction, compositing, and creative effects.

What Multiply Mode Does to Layer Interaction

Multiply is one of the most commonly used blending modes, especially for shadows or darkening images. It multiplies the brightness values of the base (bottom) and blend (top) layers. The result is always darker than either of the original layers.

• White pixels become transparent — they don't affect the image.
• Black pixels stay black — they are fully visible.
• Mid-tones darken the image depending on their brightness.

This mode works well for things like drop shadows or adding textures that should only show up in the darker areas of an image.

How Screen Mode Affects Layers

Screen is basically the opposite of Multiply. Instead of multiplying brightness values, it inverts them, multiplies, then inverts again. This makes the result lighter than the original layers.

• Black pixels become transparent.
• White pixels stay solid.
• Mid-tones lighten the image based on their brightness.

It's often used to create light glows, highlights, or overlaying scanned film grain or light leaks. If you want something to look like it's glowing over the background, Screen mode is a good choice.

Overlay Mode Combines Multiply and Screen

Overlay is a mix of Multiply and Screen. It applies Multiply to the dark tones and Screen to the light tones. This makes it useful for adding contrast or enhancing details without drastically changing the overall brightness.

• Mid-gray (50% gray) becomes invisible.
• Tones darker than mid-gray darken the image.
• Tones lighter than mid-gray lighten the image.

This behavior makes Overlay ideal for dodging and burning, sharpening, or adding texture overlays that react to the underlying tones.

When to Use Each Blending Mode

Choosing the right blending mode depends on what kind of effect you're going for:

• Multiply → Shadows, textures, ink-like effects
• Screen → Light overlays, glows, brighten images
• Overlay → Contrast boosts, subtle enhancements, textures that respond to tone

You can also try other modes like Soft Light (subtle lighting adjustments), Hard Light (stronger lighting effects), or Color (for recoloring while preserving luminosity).

If you're not sure which one to pick, just cycle through the blending modes while previewing your image — you might find a happy accident that gives your project exactly the look you need.

基本上就這些。

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