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Each controls the amount of light allowed into the camera [exposure] Shutter speed required governs aperture setting. eg if you want to take a scenic picture good depth of field is required to capture clarity in fore,middle and back grounds. Here you need longer exposure by way of slower shutter speed. To compensate for slow shutter speed you will need to narrow down the aperture to prevent over exposure, think of the aperture as the iris in your eye,depending on the light your eye needs for a clear image to the brain so the iris will expand or contract to widen or narrow the pupil. In the case of a close up you will need shorter shutter speed and wider aperture. This is a thumb-nail sketch only. Putting the above into practice is something else,thats why the little automatics are so popular. But you get it right with a manual and you cannot believe the superiority of the manual over the auto.The down side of the manual ? you don't get it right as often as you'd like
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoThe lower the film speed the more light (aperture) and time (shutter speed) you need to penetrate the film emulsion that contains the reactive chemicals that produce the negative to get a proper exposure, because lower speed film tends to have a thicker emulsion and more of those chemicals. The whole point of higher speed film is that it has a thinner emulsion, thus reducing the amount of light and time needed to produce the same image, but the typical result is "graining" because there are simply less reactive chemicals in the emulsion. With lower speed film the sooner you'll need a flash to compensate for the lack of light.
As an aside, the principle is similar in digital cameras, where the higher "ISO" results in digital graining, called "noise".
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What two variables on a camera control the exposure of the film?
shutter speed and lens aperture
What is aperture priority of digital camera?
Exposure, in digital or film photography, is determined by aperture and shutter speed. On a manual camera, the user selects both values.On an automatic camera, there are four possibilities:Manual mode. User selects both aperture and shutter speed.Shutter priority. User picks the shutter speed and the camera adjusts the aperture to ensure proper exposure.Aperture priority. User picks the aperture and the camera adjusts the shutter speed to ensure proper exposure.Program mode. The camera selects both values.
What are manual cameras?
A manual camera is a camera that does not have any automated functions, like film transport that winds the film, or exposure modes like shutter or aperture priority. Most manual cameras also do not have auto-focus capability.
What two parts of a camera controls the amount of light reaching the film?
The Shutter and the Aperture are the two controls the Shutter is used to control how long the Film is exposed for and Aperture is used to control how much light is let in
What else do aperture and shutter speed control?
Aperture and shutter speed control the amount of light that passes from the lens to the film or digital sensor of a camera. Aperture is the size of the opening within the lens. The lower the f-stop number (1.4 for example) the larger the opening and the more light is passed through. Shutter speed is closely related. It is the amount of time that the lens is open. The combination of the size of the opening in the lens and the amount of time that the lens is open determine the exposure.
Shutter speed and aperture relationship?
Shutter speed is the amount of time that the camera's shutter (which lets the light coming in through the lens onto the film/chip inside the camera) is open. Aperture is the size of the opening inside that lets the light in. Both affect the amount of light entering the camera to result in an exposure - the longer the shutter is open and the wider the aperture, the more light that is coming in. Aperture also affects the depth of field of the image, so a wide open aperture such as f/2.8 will let in a lot of light and have a shallow depth of field.
How would you 'stop'the action during a sports match?
All shots rely on three settings - the shutter speed, aperture (lens opening) and ISO or film speed. The first, shutter speed, is the most important to stop the action. Putting the camera in a sports mode effectively shortens the length of time the shutter is open, reducing the motion blur in pictures. This can be done manually by letting more light into the camera either by making the aperture larger (lower f/ number) or raising the ISO.
What are the two main exposure controls in a camera?
1. Shutter Speed 2. Aperture 3. ISO When shooting film, changing ISO requires changing to a different roll of film. Since each roll has its own constant ISO value. Since they can be changed between each shot, shutter speed and aperture are considered the two main exposure controls. With digital sensors, ISO can be modified for every shot making it an additional "main" control in camera.
How does shutter speed control the amount of light entering a camera?
The Shutter Speed. If the shutter speed is positioned at 2000 you'll have a very quick exposure, this is best used if its very bright outside. If the shutter speed is at 75, you'll have a very long exposure, best used if its cloudy or dark.
What is it meant by camera speed?
There are many functions of speed when referring to cameras. The film speed refers to the sensitivity to light of the light capturing medium. If you are shooting with ISO 200 film it will take more light or time to produce a correctly exposed image than an ISO 800 film. This property works for both film and digital cameras. The shutter speed refers to how fast the shutter can open and close. The shutter is part of the camera body. If you take a fully manual camera (Pentax K1000) and remove the lens you can see the effects of shutter speed by looking in to the camera body and changing the shutter speeds manually. When a lens is attached to a camera the shutter is always fully open, unless your camera has a DOF (Depth of Field) preview button which is being depressed. The shutter closes at the moment the picture is being taken to obtain the correct exposure. The lens speed refers to the largest aperture possible with a particular lens. Usually referred to as an f-stop. The lower the number possible, the faster the lens. A lens at f 2.8 is faster than a lens at f 4.5. It refers to the light gathering capabilities of the lens. The ratio is derived by dividing the focal length of the lens by the size of the effective aperture that is allowing light to strike the recording medium. Therefore with a 100mm lens an aperture setting of f8 would have an actual aperture of 12.5mm whereas with the same 100mm lens an aperture of f16 would be 6.25mm. In reality, there is no term camera speed. The only thing I can think of would be a sales pitch regarding the fastest ISO speed that the camera is designed for, usually ISO 1600 or higher. In reality, you can trick the camera to use whichever film speed you want by adjusting the other values accordingly. You will possibly need a light meter to do this effectively. To make a correctly exposed image (film or digital) you need the film speed, shutter speed and apertures set correctly to allow the medium to be exposed correctly. If in doubt, expose the image for the shadows and develop for the highlights.
How do you properly use exposures with photography?
To use exposures, it is best to know what they are. Exposures are combinations of film speed, shutter speed, and aperture. To use them best, a photographer should use the results (via the camera's light meter) to see if the combinations will create the desired light in camera's sensor (digital) or film.
What is aperature in a camera?
Aperture is the size of the hole that light has to pass through to get to the photo paper. An aperture with a small number would be a big whole and vice versa. In practice: If the shutter speed was high (short) the aperture would be low, meaning a large hole, so that the amount of light hitting the photo paper was correct. If the shutter speed was longer, the aperture would be a high, meaning a small hole, so that the correct amount of light met the paper... and not too much or too little. It is also how you control the depth of field in your photograph. Small aperture gives you a deep depth of field, and a large gives you an area of sharp focus. Hope that's slightly helpful!
