APERTURE (Focus or fuzzy) Aperture is the size of the hole in the lens, on a camera, from where the light travels into the camera's body and this is measured in f-stops. As the aperture opens up (f/1.4..) more light is able to enter which means the picture being taken is brighter and when the aperture closes up, less light enters the lens. Aperture also affects how sharp or blurred the picture being taken is. To capture a sharp picture you use a higher f stop and this will keep the background as well as the front image in focus. Whereas a lower f stop number will do the oppisite and keep the front image in focus whilst making the background appear to be more fuzzy. SHUTTER SPEED (Seeing a fast moving object or freezing it) Shutter speed is the amount of time between the shutters opening and the closing and this is measured in 100th of a second, the longer this is open the more light is captured. If the shutter speed is to be fast then it can helps you capture the image as the fast moving actions will freeze and if the shutter speed is slow then moving objects can appear to be blurred towards the direction of the motion. ISO (Amount of light) ISO is the basic term given to the level of sensitivity of your camera to the available light and changing the ISO of the camera changes the sensitivity to light. Therefore the lower the ISO number the less sensitive the camera is to the light capturing finer grains meanwhile a higher ISO number increases the sensitivity of your camera to the light, however then the images will appear noisier. The image with the ISO 3200 is of a much lower quality and has a lot for noise (appears to look grainy) than the image on the left which has a much lower ISO number and much fine grains. All of these three terms are interchangeable so a change made in one must be met by a change in the other. |
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