‘ISO is the measure of how sensitive the film stock or digital is sensitive to the light’. This means that the lower the number, the less sensitive it is to the light, meaning the grain is finer. ISO is measured in numbers which double, going from 100 to 12,800 (even higher). 100 Is the least sensitive and 12,800 is the most sensitive. However, the most sensitive you put the ISO to, the grainier and noisier the image will be. When you put it on 100 it means the image you’re trying to photograph has good lighting/its outside, 800 is okay lighting/indoors and 12,800 is low light.

These are pictures of Maddy in different ISO’s, you can tell because of the amount of light that has been let in and it made the shots grainer. The shot 1 and 2 are the perfect ISO for the shot, around 800. Shots 3-5 are the least sensitive, which are probably around 100 and more. Then, on the last few it’s more sensitive so the higher set of ISO.

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‘Aperture is a hole in the lense that light travels through.’ Aperture is measured in f/ stops, so the bigger the aperture (i.e. f/1.8), the shallower the depth of field, that’s when not everything is in focus, usually just one object. The smaller the aperture, (i.e. f/22) the  deeper the depth of field, when most thing/everything is in focus.

The first 3 pictures would be f/1.8 because only one thing is in focus, and the last two pictures would be a smaller aperture of around f/22 so get most things in focus.

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Shutter Speed

‘How quickly the shutter opens/closes. How long the film or sensor is exposed to light.’ The shutter speed is measured in seconds/factors of a second which go from 30 seconds to around 1/4000 of a second. Shutter speed also effects the motion blur; the quicker the shutter speed (1/4000 of a second), the more frozen the image is. And the slower the shutter speed (30 seconds), the blurrier the image is.

1/2 of a second is good for low light photography and motion blur, like pictures two and three. 1/15 of a second is good for capturing motion blur when doing a pan and a static object with a tripod. 1/60 of a second is also good for panning shots and light paintings, like picture four. 1/500 of a second is good for freezing faster moving objects, like picture one.

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header picture:

light painting: