Superfast normals (?/1, ?/1.2): Used for people who like limited depth of field, as well as for people who like to complain about limited depth of field.

• 超高速常规(?/1；?/1.；2)：当人们需要有限的景深的时候使用，同样适合哪些总是对景深有抱怨的人士。