Light Science and Magic 4/e

will increase contrast in a dark subject, whereas decreasing exposure may increase contrast in a light gray scene.

and subject and the choice of lens

direct transmission, in which light passes through a material in a predictable path.

Photographic lighting is more than just light. Lighting is a relationship between the light, the subject, and the viewer. If we want to say any more about lighting, we must talk about the subject.

Absorbed light turns to heat. We can feel it, but it is no longer visible to the camera.

Absorption and reflection are both more major influences on

Notice that the strength of the field moves from zero to its maximum-positive strengths and then back to zero; it then repeats the pattern in the negative direction. This is why the field around a beam of light does not attract metal like an iron magnet does. The field around a photon of light is positive half of the time and negative the rest of t

Light is a type of energy called electromagnetic radiation. Electro magnetic radiation travels through space in tiny “bundles” called photons. A photon is pure energy and has no mass. A box of photons the size of an elephant weighs nothing.

describing the light implies seeing the light well enough to know whether to shoot or to wait until conditions improve.

that strikes it: it can transmit, absorb, or reflect that photon.