You maybe remember when you had your high school senior portrait taken a soft
focus kind of effect was kind of all the rage.
And kind of a top photographer's trick. It would smooth out skin tone and its texture and so forth.
They would actually put something in front of the lens either like a piece of
frosted glass or Vaseline on a filter or something like that.
请把上面的句子翻译成中文,谢谢。