Do photographers have to know PS?

PS can make any changes to the photos, and there are many things that can be done later in the photos. Please refer to Baidu Encyclopedia: /view/ 127346.htm for details. fromtitle = photoshop & ampfromid = 133866 & amp； Type=syn, but the processing of taking pictures is generally as follows: 1, repair. For example, fix the red eye, or PS something that shouldn't come out in the background. Or the renovation of old photos. 2. beautify. For example, color matching, skin beauty, acne removal on the face and so on. 3. Creativity. Add words, pictures and special effects to the original photos. Make a sense of creativity that natural photos don't have.