Here are a few options for a WordPress post tag description for “背景模糊” in Traditional Chinese, catering to different levels of detail and target audiences:

**Option 1: Concise and Informative**

* **Description:** 讓照片中的主題更突出，營造景深效果的修圖技巧。

* **(Pinyin: Ràng zhàopiàn zhōng de zhǔtí gèng tūchū, yíngzào jǐngshēn xiàoguŏ de xiūtú jìqiǎo.)**
* **(Translation: A photo editing technique to highlight the subject in a photo and create a depth of field effect.)**

**Option 2: More Descriptive**

* **Description:** 標記關於照片中背景模糊處理的資訊。瞭解如何使用散景、淺景深等技巧，使照片的主題脫穎而出，營造藝術感。

* **(Pinyin: Biāojì guānyú zhàopiàn zhōng bēijǐng móhú chǔlǐ de zīxùn. Liǎojiě rúhé shǐyòng sǎnjǐng, qiǎn jǐngshēn děng jìqiǎo, shǐ zhàopiàn de zhǔtí tuōyíng ér chū, yíngzào yìshù gǎn.)**
* **(Translation: Tags information about background blurring treatment in photos. Learn how to use techniques like bokeh and shallow depth of field to make the subject of the photo stand out and create an artistic feel.)**

**Option 3: Targeted to Beginners**

* **Description:** 輕鬆讓照片背景變得模糊，讓主角更突出。適用於手機修圖和專業攝影，幫助你拍出更有質感的照片。

* **(Pinyin: Qīngsōng ràng zhàopiàn bēijǐng biàn dé móhú, ràng zhǔjiǎo gèng tūchū. Shìyòng yú shǒujī xiūtú hé zhuānyè shèyǐng, bāngzhù nǐ pāichū gèng yǒu zhìgǎn de zhàopiàn.)**
* **(Translation: Easily blur the background of your photos to make the main subject stand out more. Suitable for both mobile photo editing and professional photography, helping you create photos with more texture/quality.)**

**Option 4: Focusing on the Technical Aspect (If your content focuses on technical details)**

* **Description:** 探索攝影中的背景模糊。包含關於光圈、鏡頭焦距、距離、景深等技術細節和相關教學。

* **(Pinyin: Tànsuǒ shèyǐng zhōng de bēijǐng móhú. Bāohán guānyú guāngquān, jìngtóu jiāojù, jùlí, jǐngshēn děng jìshù xìjié hé xiāngguān jiàoxué.)**
* **(Translation: Explore background blurring in photography. Includes technical details and tutorials on aperture, lens focal length, distance, depth of field and related concepts.)**

**Key Considerations when choosing:**

* **Your Target Audience:** Who are you writing for? Are they beginners, experienced photographers, or general users?
* **Your Content’s Focus:** What specific aspects of background blurring do you cover in your posts?
* **Word Limit:** WordPress might have a character limit for tag descriptions, so keep it concise.
* **Keywords:** Consider adding frequently searched terms (e.g., 散景 – Bokeh, 淺景深 – Shallow depth of field) within the description for better search engine optimization (SEO).

Choose the description that best reflects your content and helps your audience understand what the “背景模糊” tag represents. I think the first one is a good, general option, while the specific option would work well if the other details fit your needs.