It makes good sense to work with a limited range of well-chosen films. You get to know their performance intimately 8211; what each can contribute to your particular style of picture, its response to different subject situations and, when necessary, just how far you can abuse the film before results become unacceptable. 8230;
Film is, very simply, a light-sensitive emulsion on a plastic base. An easy way to think of film is to compare it with bread and butter. Think of the bread as the base, the butter as the emulsion. When you hold this combination in your hand, what you feel and see is mostly bread, the base 8211; not butter, the emulsion. The base (bread) holds and supports the emulsion (butter), the active part of the film. 8230;
How sensitive a film is to light, that is, how much it reacts to a given quantity of light, is indicated by its film speed. The more sensitive-or faster-the film, the higher its number in the rating system. 8230;
Most people8217;s experience of colour film will be buying a colour negative daylight balanced film. This means the image goes onto the negative film and then is reversed into a positive colour image in the printing process. 8230;
This chapter discusses how our light-sensitive camera materials work, especially colour films. It traces the way that ingenious principles have been put into practice and compares how films record relative to the way our eyes see subjects directly. So the chapter begins by describing how eyes and brain receive and interpret the sensation of colours and comparing this with the far more fixed chemical response of colour films. Differences between seeing and photographing are important to grasp in order to control results. 8230;
Colour Film consists of three light sensitive layers. Each of which responds to about one-third of the colours in the light spectrum. Each layer is matched to a primary colour dye that is built into the emulsion or added during processing, and every colour in the spectrum can be produced by mixing varying proportions of the colour primaries. 8230;
Artificial light sources let you bring your own light with you when the sun goes down, when you photograph in a relatively dark room, or when you need just a little more light than is available naturally. Different sources produce light of different colour balances, an important factor if you are using colour films.