Eric Sedletzky
Contributor
Staying close to "your" source of air??? How does the air on his back become "your" air supply?? You have your air, and he has his.I am leaning more to this one: My safety comes first. Which means - stay close to my source of air. Which is not a photographer. As he will not be paying attention when I am out of air.
Yes, your safety comes first. That is why you should be monitoring "your" air supply (on your back) and make sure you don't run out. Nobody is responsible for you not paying attention and running out of air but yourself. What if both of you have the same attitude and run out of air at the same time by not paying attention to your supply, then what? Who do both of you turn to?
Sharing air should be a last resort alternative in case of a catastrophic failure, not for someone that forgets to keep track of time, depth, and air supply.