A camera (that is FPA and objective) is a device that measures [intensity] or radiant intensity vs. two angles (horizontal & vertical). So it generates a representation of the physical quantity
How is this "field" actually named in physics? I am looking for a radiometric, photometric, ray-optics or similar term.
A few options that come to my mind:
- Intensity field
- Radiant intensity field
- Light field (I think this is something else)
Examples: A voltmeter is a device that measures voltage, a clock is a device that measures time. An impedance analyzer is a device that measures an impedance spectrum (i.e. V/A vs. frequency). But what does a camera measure? (camera including objective, not just the sensor array)
: For simplicity let ignore here color and also non-linear response of typical consumer cameras.