In general, the accepted wisdom is that photo (with strobes) is better than video for photogrammetry. There are good reasons for this – the strobes give off richer and more powerful light, so the shots are more crisp.

However...

Capturing dive data into electronic logs is not quite as stylish as the old school handwritten process but there are some very serious benefits to it. A critical factor when setting it up is to make the process painless so that when enthusiasm levels fade, it is not too much of a burden to keep it going.

That time when the sharks took up residence in north bondi...