As part of the [rehearsal](/content/en/learn/preproduction/rehearsal/index.html) process, technical equipment will undergo a thorough review if it has been borrowed before the start of shooting. In a camera test additional, often critical, shooting situations are tried out, to see whether they can be implemented in the intended way. This includes a general look test in which shots are recorded in varying setups and tested for their effect, often during [cast rehearsals](/content/en/learn/preproduction/rehearsal/actor-rehearsals/index.html). Examples of critical shooting situations can be shooting with candlelight or underwater. A camera test can also be combined with [costume and make-up rehearsals](/content/en/learn/preproduction/rehearsal/costume-fittings-and-make-up-tests/index.html) to judge how things look on camera. The result is viewed in the output format, for example on a monitor or a standardized cinema screen.