Three dimensional camera

Apparatus for creating an image indicating distances to objects in a scene, comprising:

• a modulated source of radiation which directs radiation toward a scene such that a portion of the radiation from the source is from points in the scene and reaches the apparatus;
• a detector comprising a photographic film;
• and
• a modulator which receives said portion, modulates it, and transmits a part of the portion of the radiation to the detector, said part being dependent on the distance of respective in the scene from the apparatus;
• forms an image having an intensity distribution indicative of the distance of objects from the apparatus on the photographic film.

A method of determining the distance to portions of a scene comprising:

• illuminating the scene with a plurality of consecutive mutually identical pulses of energy such that energy from the portion is received at a detector, said pulses occurring during a plurality of spaced first time periods;
• determining the part of the received energy which is within a plurality of mutually identical, spaced, consecutive second time periods;
• and
• ascertaining the distance to the portion of the scene based on the value of the determined part,
• wherein the plurality of mutually identical first time periods and the plurality of mutually identical second time periods are not identical to each other.