APERTURE
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
The choice of ISO enables you to use the best combination of aperture and shutter speed when the amount of light would normally stop you from doing so. However, increasing the ISO also reduces the quality of your images. 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 objects will freeze and if the shutter speed is slow then moving objects can appear blurred towards the direction of the movement. |
ISO
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 compatible so a change made in one must be met by a change in the other.
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 compatible so a change made in one must be met by a change in the other.