Moony 11 rule.

The moony 11 rule is a modification of the sunny 16 rule for taking photos of the Moon if you haven’t got a light meter.

The rule is quite easy to remember - if you want to take a photo of the Moon set the aperture to f/11 and set the shutter speed to be as near as possible to the reciprocal (1 / x) the film speed. So if you’re using ISO 100 film, for example, you would set the aperture to f/11 and the shutter speed to 1/100 sec. However, since most cameras don’t have a 1/100 sec setting you would set it to the closest shutter speed, which is 1/90 sec.

This rule works because the light output from moon is simply reflected sunlight.

cf. ISO, light meter, sunny 16 rule.

Entry last updated 2005-10-17. Term 808 of 1487.

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