Technical Terms -  F
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FAST FILM

• Film with a ISA speed of 400 or more.
• Used for pictures in poor light or of fast moving subjects.
• Fast film will appear more grainy than a slow film.

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​FILL-IN LIGHT
Using the flash or  reflector in daylight to brighten up dark shadows on the subject.

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​FILM FRAME COUNTER

• Indicates the number of pictures taken on the film.

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​FILM SPEED

• The sensitivity of film to light.
• The film speed is measured in ASA, ISO or DIN numbers.
• The higher the number, the more sensitive to light the film is.

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​FILTER

• Anything transparent put in front of the lens to change the picture.
• Filters may give special effects, changes in colour and other creative results.

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​FLARE

• The result of unwanted direct light shining into the lens.

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​FOCUSING

• Adjustment of the lens-to-film distance in order to achieve a sharp image.

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​FOREGROUND

• The part of the picture in front of the subject.

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