Back in my B/W Darkroom days, I purchased a Soft Focus filter. I had read that it can be flattering for some models.
I quickly learned two very important things about Soft Focus filters
1. You can easily add soft focus in the dark room
2. If you use a Soft Focus filter, you can't "fix" it in the dark room.
What was I thinking??
I blew an entire roll of film in one shoot because I used a Soft Focus filter but afterwards I really wanted the pictures to be sharp.
Friends don't let friends buy Soft Focus filters.
Second to this would have been my decision to buy a Pentax Auto 110 camera. An SLR which uses 110 film. Can you imagine how difficult it is to load, develope, and print 110 film in a darkroom? I don't have to imagine.
I bought this camera knowing that I would be developing and printing my own photographs.
What was I thinking?