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f number::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | focal ratio, speed, stop number |
| Type of | ratio |
Examples of f number
f number
The focal length divided by the f-number gives the effective aperture diameter.
From the en.wikipedia.org
The lower the f-number, the higher light intensity at the focal plane.
From the en.wikipedia.org
The diaphragm aperture diameter is proportional to the focal length divided by the f-number.
From the en.wikipedia.org
For a given DOF and field of view, the required f-number is proportional to the format size.
From the en.wikipedia.org
With tilt, the effect is different from that obtained by using a large f-number without tilt.
From the en.wikipedia.org
Lens speed refers to the maximum aperture diameter, or minimum f-number, of a photographic lens.
From the en.wikipedia.org
The resulting 3 element lens has a smaller maximum f-number.
From the en.wikipedia.org
That is, a is the reciprocal of what we now call the f-number, and the answer is evidently in meters.
From the en.wikipedia.org
As noted above under Tilt, using a large amount of tilt and a small f-number gives a small angular DoF.
From the en.wikipedia.org
