We tend to rate cameras on the quality of the pictures they produce, but there's another type of camera that has a second set of equally-important priorities. Waterproof and rugged cameras have to make sure their bodies are impervious to the elements - water, dust and dirt - because if they're not the nice piccies they take will be all-but useless.
Read our best waterproof cameras round-up
Cameras like this use toughened bodies and rubber seals to be sturdy enough for IP certification. IP stands for ingress protection, and is the standard by which gadgets like this are measured. One the best rankings - attained by most of our waterproof picks here - is IP67. This means it's completely protected from dust and can stand immersion in up to 1m of water for up to 30 minutes.
Of course, there's more to a waterproof camera than just waterproofing. For more on our top picks, watch the video below.