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.
I took this photograph on day two of Formula 1 using a combination of F-stop, shutter stop and ISO with a 28-300 mm lens.
The N86 is Nokia's new 8 megapixel camera phone and it will sport a wide-angle Carl Zeiss Tessar optics lens with a mechanical shutter up to 1/1000 and a f-stop range of 2.
The lens is infrared (IR)corrected to keep FlexiDome day/night cameras in focus at all times, and has an f-stop of f/1.
They had already practiced the technique of reciprocity: making shutter speed, f-stop, light and film speed agree.
Infrared light focuses on a slightly different plane than daylight; however, this can be mediated by increasing depth of field by using an f-stop setting of 11 or higher.
Your shutter speed stinks, F-stop is funky and your lens cap is on.
1) For instance, while taking a picture, a person can use a narrow f-stop and a fast shutter speed to make a photograph taken during the day appear as if someone took it at night.
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.