Angela White has said that cameramen sometimes get erections while shooting her scenes.
She added that a cameraman can join in if he has been tested and everyone involved consents.
“You have to be tested. I get tested about every 12–13 days, so if the cameraman was tested and it was consensual, yeah.”
She also noted that she’s seen PAs and cameramen hard on set. Whether it’s okay to acknowledge depends on your rapport with the director: bringing it up can be inappropriate, but if you’re already flirty with the director, it’s generally fine.