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In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the

This photos exposure is fine because both the ground and sky aren’t too bright. The colouration is normal. Stop 1

This image is over exposed slightly as the sky is washed out meaning we are losing information in the highlights of the clip. Stop 2

This photo is way to over expose, the image is so bright you can hardly see anything. The photo isn’t very good, as it just doesn’t allow you to see anything. Stop 3

The exposure in this photo is slightly fair ranged. Stop -1, we placed this intentionally on stop -1 as to test the exposure for the scenery.

This image is way to over exposed making it rather hard to see anything; the background is turning very blurry and hard to see. Stop -2.

This image is way too dark nothing is visible and no one can make out what’s in this image. Stop -3

cone angle of a bundle of rays that come to a focus in the image plane. Therefore the larger the number the larger the opening of the hole is making the image much brighter. The lower the number the smaller the hole gets letting in less light making the image darker. ISO is a camera setting that will brighten or darken a photo. As you increase your ISO number, your photos will grow progressively brighter. For that reason, ISO is a good tool to help you capture images in dark environments or be more flexible about your aperture and shutter speed settings. Shutter speed is another factor of how bright or dark an image could be. The slower the shutter speed more light is let in as the shutter is open for longer, you would also get sharper images if the shutter is open for longer unless your taking photos of moving things as it will be very blurry. The quicker the shutter speed the less light is let in as the shutter is open for less time, quicker shutter speeds are used for taking photos of moving things as the image is taken quicker resulting in a sharper image for something that’s moving.

To change the brightness of an image or colouration most editing software’s can do an amazing job you can also find online editing websites that do an incredible job such as Pic Monkey and Photoshop. You are able to change highlights, shadows, temperature and much more.

https://www.youtube.com/watch?v=dmn3K-06YTg

https://www.youtube.com/watch?v=m1uccmJ4Nt0