f-stop


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f-stop

any of the settings for the f-number of a camera

f-stop

(Focal-STOP) The measurement of the aperture setting in a camera lens. The f-stop setting determines how much light is allowed to enter the lens and pass through to the film (analog) or CCD or CMOS sensor (digital). It also determines how much in front of and behind the subject is in focus (see depth of field).

Length Divided by Opening
The f-stop is the focal length of the lens divided by the diameter of its opening. Each consecutive f-stop halves the opening of the previous. For example, an 80mm lens with its f-stop set to f8 means that the optics inside the lens create a diameter equivalent to 10mm. Changing the f-stop to f16 creates a diameter of 5mm. See focal length.
References in periodicals archive ?
Each change in f-stop corresponds to a doubling or halving in aperture size.
Our new HDR camera technology and software enables us to capture and display dynamic HDR images, covering at least 20 f-stops, at full high-definition resolution, and at 30 frames-per-second.
It delivers unprecedented image quality, 10 f-stop dynamic range, a 7-inch LCD touchscreen interface, gigabit connectivity, battery-powered operation, and up to 4 hours of continuous shooting on its USB2.
They provide a high-resolution image and fast F-stop with infrared corrective feature for removing the focus shift between day and night modes.
The electronic lens control allows speeds to 1/500 second an 1/10 f-stop intervals, producing accurate and consistent shutter performance.
The lens is one of those fancy Carl Zeiss efforts, with a 10x optical zoom allowing 35-mm camera f-stop equivalents of F1.
With camera systems, the f-stop must be adjusted to provide the correct amount of light at a given distance and lighting condition.
If necessary, capture additional images of the impression by bracketing exposures up one f-stop and down one f-stop.
It also supports more advanced image adjustment tools, such as f-stop adjustments, image sharpening and noise filtering.
A smaller depth-of-field (smaller f-stop number) focuses the attention on your subject not the background.
His New York teammates give Sehorn grief for shedding his shirts at the drop of a camera's F-stop.