However it did let me down the other day when I was trying to take a picture of the main water tank stop cock.
See that square opening bottom right. That's where I put my hand through to turn off the tap. I stuck the camera in there and had several unsuccessful attempts to get a picture of it.
What would be really good I suppose would be a little webcam attached to a laptop, then you could see what you were doing in real time. Hmm, must add one to my christmas list.