The slower the film -- that is, the lower the ISO rating -- the longer the shutter must stay open at a particular aperture (F-stop). In low light with slow film, the shutter may have to stay open too long for the camera to be hand-held without noticeable camera shake, even with cameras with optical image stabilization.
How many amount of light are reaching in the film.
aperture and shutter speed control the amount of light while iso refers to the sensitivity of the film or sensor to light.
This will depend on what you are shooting. If you are shooying water a slow shutter speed will do - if it's sports photography you will need a fast shutter speed. The shutter is a mechanical device that controls the length of time that light is allowed to act on the film. With a shutter speed of 1/125 you shoud avoid blur if the subject is not moving. Any speed under this your camera should be placed on a tripod. www.goldprints.com
shutter speed and lens aperture
Shutter speed controls how long the sensor/film is exposed. Shorter shutter speeds normally provide a sharper image. Longer shutter speeds give you more blur. If you're hand holding your camera a good rule to go by is to multiply you focal length by two and use that as your shutter speed. For example, if your focal length is 100mm--your shutter speed should be 1/200sec or faster.
the shutter speed is how fast the shutter can go eg. an dslr has a faster shutter speed than a digital camera the shutter is a part on the camera that opens and closes when it opens it draws the light from the object focused on and places it on the lcd screen of film giving you your pic
Shutter speed is how fast your shutter opens and closes to take a picture on your camera. Shutter speed also has a lot to do with exposure. The higher the shutter speed (1/2000 example) the less light.
You can adjust the shutter speed of Canon EOS cameras so there isn't a set shutter speed.
Shutter speed is how long the shutter stays open after you take a photo. The faster the shutter speed is, the less light you are letting in. How you should set your shutter speed is dependent upon the type of picture you want to take.
The 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".
Shutter Speed refers to how long the Medium (the sensor or Film) is exposed to light. a common DSLR Camera can have speeds from as slow as 30 seconds to as fast as 1/4000th of a second
Shutter speed affects how movement is recorded. A high shutter speed will appear to stop movement, while a slower speed will show the movement.