Tough one. The op told you of the noise. That was their responsibility. That you didn’t act on it puts it on you, unfortunately.
It wasn’t his/her rig. I get antsy when someone wants me to use THEIR sound gear for this very reason. I also know my gear is better than the average kit.
The noise could be due to many different things, interference, a blackberry on the set, a nearby DTV station, Nextel walkie talkie phones, nose snorts from the person speaking.
It’s about communication. At the end of each take, you either ask the sound person or they know to tell you whether orr not the take was good.
An added option is to get a split from the camera headphone jack so you can hear what’s going into the camera. It won’t tell you if the sound acctually went to tape with most camcorders, but it’s as good as you get.
Regards,
Ty Ford
Ty Ford’s “Audio Bootcamp Field Guide” was written for video people who want better audio. Find out more at https://www.tyford.com