The light doesn't change. But by cutting the time in half that the shutter stays open,
you cut in half the total amount of light that reaches the film.
1/125 is half as long as 1/60, so half the light will strike the film. To compensate you can either open the lens one f/stop or use a faster ISO and the same f/stop.
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.
Question needs to be more specific. Brand and model of camera and operational mode that you are using.If the shutter speed is very high, chances are you are shooting in very bright light and the camera has some kind of inbuilt sensor which adjusts accordingly.
Shutter speed has a lot to do with your overall exposure. A higher shutter speed will decrease the light a lot. I was in best buy playing around with a camera and turned the camera shutter speed to 1/4000. After taking the photo, the preview was black. I realized it was because of how much higher I increase my shutter speed. Shutter speed also affects motion in a photo. A higher shutter speed will freeze all action in a photo a will less likely have a blur to it if you have a shaky hand. A lower shutter speed lets in more light while the shutter is will opened so the entire time that the shutter is open, the camera takes in all that light. Increasing chances of blur, you can also use this for crazy, funky effects! If your taking a picture of a waterfall with a low shutter speed, your gonna get a blur, which can typically look pretty epic sometimes too.
The highest shutter speed available to you will give you the darkest exposure, while the lowest shutter speed available will give you the brightest exposure
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.
It doesn't necessarily inprove your picture. The higher the shutter speed, the less light, also the blur in a photo. A higher shutter speed will freeze a photo. A lower shutter speed will blur most motion and will increase chances of blur.
light
in manual mode press trash button. then press left or right on the kew pad for shutter speeds. note: functions will high light in RED
The amount of time that the shutter remains open - allowing light to pass through it to form the image. Generally - a lower shutter speed would be combined with a smaller aperture and a higher shutter speed with a larger aperture to correctly expose the image.
How many amount of light are reaching in the film.
Slow shutter speed - keeps the shutter curtain open for longer periods of time, e.g. when you shoot at night or in fading low light. Fast shutter speeds are used to capture action or when scene you are trying to shoot is well lit. In this case the shutter opens and closes in a fraction of a second!
It depends on the camera setting.Many cameras have a setting A or Av that lets you change the f-stop and the camera will change the shutter speed automatically.The manual setting (often M) will not change the shutter speed, on manual you are left to your own devices.See related link for an overview of common settings.