Scott Rogers wrote:What is the safest way, if any, to take a picture of someone while you are belaying them?
First off, I didn't take any of these photos - my wife did. However, I do take lots of photos while on belay. It's really no different than doing anything else while on belay - taking a wizz, putting on your shoes, eating a snack, etc. As long as you have a solid grip on the rope with your break hand and can do whatever it is you need to do with the other hand it seems pretty safe to me. If you think about it, you're always going to be catching a fall one-handed. What difference does it make what you're doing with your non-break hand?
Note: I belay with the classic "pinch" method. Though I usually have my break hand in the reverse position from the diagram below (instead of thumb up I have mine with thumb down). I find with my hand in this position I can twist the rope around the bottom of my hand to create more friction and get a better grip. If you take a look at this photo you can see that I have my hand in the reverse position from the diagram below, but I have twisted it 180 degrees so that my thumb is pointing up. If I pull straight down I have a very solid break. Also note that my left, non-break hand is doing absolutely nothing. It might as well be taking photos .