apeture photography...........?

Question

whats it mean when it says f/9.0 or something like that

Answer 1

The size of the apeture is the size of the opening to let light into the camera. A high apeture (ie: f22) is a very small opening. A low apeture (ie: f/2) is a wide opening. The higher the apeture, the longer the exposure to light is needed. A high apeture gives a greater depth of field.... meaning that more things will be in focus in the fore ground and back ground. A low apeture requires less exposure so it is ideal for capturing moving subjects.... but it has a lower depth of field,.... meaning that foreground and background objects will be blurred.

Answer 2

Aperture refers to the opening of the lens that allows reflected light to come through to through the lens to the film (film camera) or to the sensor (if digital camera). The size is controlled by the leafs of the diagphram. It is often referred to as the f/opening.

The "f" stands for FACTOR, as in a mathematical equation, or a componant of a mathematical equation.

To make this easier for me to explain, I'll use inches.

If you have a lens that is 4 inches long from the middle of the outside part of the lens to where the film plane lies or the digital sensor (called focal length), and the lens has an opening of say f/2... what this refers to is that the size of the opening (aperture) is 1/2 of 4" which equals 2".... so, the size of the aperture is 2". If on the other hand, the size of the aperture is f/4, that will then refer to a size that is 1/4 of 4 inches, or 1". By the same token, if the aperture opening is f/8, then the size of the opening if measured is 1/8 of 4 inches, which means it is 1/2" in size because 4 inches divided by 8 is 1/2)

Now, let us say that the lens is 2" long in focal length (from the middle of the outter lens to the film plane or the sensor plane. If the aperture is said to be f/2, it is 1/2 of 2 inches, which is 1" and if the f/opening is f/4, it is 1/4 of 2 inches, or 1/2 inch.

You'll notice that the larger the number, the smaller the size of the opening, right? Well, that's like a 1/4 of a pie being smaller than 1/2 of a pie, and a 1/10th of a pie is still much smaller than 1/4 and certainly much smaller than 1/2 of a pie.

How long the lens opening stays open depends on the shutter speed. Usually, with adequate lighting for a proper exposure (aperture/shutter speed combination), the larger the shutter speed, the faster the shutter speed; likewise, the smaller the aperture, the longer the shutter speed.

I hope that helps you.

EDITED TO ADD: Seamonkey, sorry, but you're wrong. The "f" in this case does indeed stand for "factor", NOT "focal." Do a Google search and confirm and verify. I've been in photography a little over 43 years now; trust me on this. According to Webster's New World Dictionary & Thesaurus, "F-stop" is defined as, "Any of the calibrated settings for an f-number." AND 'f' number" is defined as "a number that represents the relative aperture of a lens, equal to the focal length divided by the effective diameter of the lens aperture: a higher number indicates a smaller opening."

Answer 3

Aperture is a mechanism that controls the amount of light reaching the film (or in the case of digital photography, the sensor) through the size of its opening. The larger aperture number (ex. f/22) has a smaller opening which means that you need a slower shutter speed to expose your film. Having a smaller aperture reading (ex. f/1.8) indicates a wider opening which would allow you to shoot at a faster shutter speed.

Having a wider opening, however, would result in your photo having a shallower depth of field... this means that only a particular portion of your photograph will be sharp or in focus.

Always keep in mind the two functions of the aperture... the first of which is to control exposure and the other is to control the depth of field.

Answer 4

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Answer 5

it is the size of the hole in the part of the lens that controls the amount of light that exposes the film.... the larger the number the smaller the opening the (f22) the smaller the number F1.2 the larger the opening

Answer 6

f stands for focal not factor.

Answer 7

Its Aperture!!! Some of us need to learn how to spell~

Answer 8

IT IS THE AMOUNT OF LIGHT THAT IS COMING THRU THE LENS.