2007-10-05 00:49:35 · 15 answers · asked by Andrew L 1 in Arts & Humanities ➔ Visual Arts ➔ Photography
The most widely accepted answer is "Focal Ratio".
This is the standard f-stop scale
1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16
Each aperture has half the light gathering area of the previous one. The actual size of the aperture will depend on the focal length of the lens.
Here is an explanation of how they are derived, in an easy and simple way to understand...
Note that we start at 1 and go to 16. Look at every other number, it is doubling. We start at 1, double that it's 2, double that it's 4, etc etc.
Now how about the numbers in between? Well they start out as the square root of 2. So we start with the square root of 2 which is 1.4, then keep doubling that (roughly). These are those numbers in between.
If you study how f-stop and shutter speeds are calculated, you really start to get a better understanding of photography. In the fully manual days, photographers had a better understanding of these meanings. Today with digital and all the automated cameras, the need to understand them in such detail has diminished.
2007-10-05 03:48:48 · answer #1 · answered by DigiDoc 4 · 4⤊ 2⤋
The F stands for focal ratio or relative aperture. An aperture of F16 is a very small opening and will give a photo a much greater depth of field that an aperture of F2.04 which is a very large opening and designed to allow more light to enter the lens for extreme low light situations such as photographing indoors or outside in the shade or on early evenings.
2007-10-05 01:39:25 · answer #2 · answered by landmj1 2 · 3⤊ 1⤋
it is likewise understand because of the fact the f-ratio, or relative aperture. that's calculated with the help of dividing the aperture in mm into the focal length of the lens in mm. there is an different cease you may run into in case you do any action image paintings. that's the "T"-cease. The T stands for transmittance. formerly inner easy meters have been obtainable in action image cameras, all exposure readings have been desperate with a handheld easy meter. mutually as the f/cease and t/cease have been just about comparable on best lenses, each and all the early zoom lenses "ate" particularly some sunshine (as much as two stops), so the quantity of light attaining the movie had to be desperate precisely. for that reason the "T"-cease
2016-10-21 02:55:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
This site contains photography tutorials and courses for you to study at your own pace. https://tr.im/TYYst
To get started, all you need is a camera, whether it be the latest digital camera or a traditional film-based apparatus!
Read about what is ISO, aperture and exposure. Discover different types of lenses and flash techniques. Explore portrait photography, black and white photography, HDR photography, wedding photography and more.
2016-04-22 09:39:48 · answer #4 · answered by ? 3 · 0⤊ 0⤋
What Does Stop Stand For
2016-11-09 23:15:11 · answer #5 · answered by chicklis 4 · 0⤊ 0⤋
1
2017-02-10 08:59:39 · answer #6 · answered by williams 4 · 0⤊ 0⤋
I don't have a photography degree, but I have read both "focal" and "fenestra", which means a hole or opening. The numbers are indeed a ratio of lens diameter to opening.
2007-10-05 01:44:50 · answer #7 · answered by Ara57 7 · 3⤊ 1⤋
It doesn't actually stand for anything in particular. F is just the letter they happened to use to represent that variable. Fstop is the ratio between the aperture diametre and the focal length.
2007-10-05 01:34:36 · answer #8 · answered by Piano Man 4 · 1⤊ 2⤋
In optics, the f-number (sometimes called focal ratio, f-ratio, or relative aperture[1]) of an optical system expresses the diameter of the entrance pupil in terms of the effective focal length of the lens. See more on the link below:
2007-10-05 00:58:25 · answer #9 · answered by Polo 7 · 2⤊ 4⤋
The "f" is a ratio of the length of the lens to the aperature.
2007-10-05 00:54:13 · answer #10 · answered by Polyhistor 7 · 2⤊ 2⤋