
1) Aperture setting 2) Camera lens setting 3) Camera setting 4) Camera-lens setting 5) Canon setting 6) Concern for Adams or Arbus 7) Concern of some shooters 8) Depth of field determiner 9) Fuji setting 10) It affects depth of field 11) Lens setting 12) Lens speed setting 13) Manual minolta setting
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https://www.crosswordclues.com/clue/f-stop

In reference to a lens opening or aperture the f-stop is the measurement used to determine the amount of light reaching the film. The smaller the f-stop number the larger the opening and the greater amount of light that is allowed to pass to the film. F-stop numbers do not give any indication of light reflection or absorbtion
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http://www.allmovie.com/glossary/term/f-stop

The number assigned to a particular lens aperture (or opening) size.
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http://www.encyclo.co.uk/local/21469

A number that indicates the relative size of the opening of the lens (aperture) and written, for example, as f/16. Because the number is obtained by dividing the focal length of a lens by it's effective aperture, the larger the aperture, the smaller the f-number. In the conventional series, each number represents an aperture that admits half as muc...
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http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl

The ratio of the focal length of the lens to diameter of the aperture. See also: Focal Length, Focal Point, Lens.
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https://www.encyclo.co.uk/local/20687

The scale used to measure the size of the opening of the iris on a lens. Opening the iris wider lets in more light, and closing it down, smaller, lets in less light. F-stops can be a little confusing, because the larger the number, the smaller the opening of the iris, and conversely the smaller the number, the larger the opening. The typical f-stop...
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https://www.encyclo.co.uk/local/21112

In photography, another name for f-number
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https://www.encyclo.co.uk/local/21221

Number indicating the size of the aperture. It is an inversely proportionate number as in F2.8 is a large opening and F16 is a small opening.
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https://www.encyclo.co.uk/local/22122

the setting of an adjustable lens aperture, as indicated by an f number.
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https://www.infoplease.com/dictionary/f-stop
No exact match found.