Please use the lomo camera, and someone with certain photographic knowledge will help you answer it.

Lomo camera, also known as toy camera effect, is characterized by dark corners and prominent objects in the middle.

The imaging of film toy camera is influenced by two aspects.

1, which is film. There's nothing wrong with that.

2, the lens, the lens of the lomo camera is plastic, it is conceivable.

Lomo has never tried underwater.

I suggest you buy a waterproof lomo camera and try it in your own home. You will know whether you can meet your requirements.