43221 Queen Elizabeth Sixth Form College

Saturday, 5 February 2011

Aperture Settings

In lesson, we learnt about how to use the Aperture Setting on the cameras and how the function of the f-stop works. Essentially, the opening behind the camera lens that lets the light through is called an aperture. The way you can control the size of this opening is by setting the f-stop to an appropriate number. By changing the size of the opening, you are changing the amount of light that is allowed in through the lens, therefore controlling the depth of the field. The larger the f-stop, the smaller the lens opening which allows more light in. Esssentially, the larger the field of depth, the more the background is out of focus. However, the smaller the field of depth, the background is more in focus. I took 3 photos to illustrate this.

The f-stop on this photo was 4. As you can see, the background is completely in focus and the object at the front is out of focus.

In this photo, the f-stop is at 14. It is a middle range number meaning that generally, everything in the photo is as equally focused. It appears just like a normal photo without any point of focus.



And this photos f-stop was at 30. As you can see, the object at the front is in focus whilst the background is blurry and out of focus.

All in all, the f-stop can come in useful for a lot of different reasons. For example, one situation that you could use aperture settings in is when you are taking portrait photos of a model and you want the focus to be completely on them. In the case, you would set the f-stop number to 30 and snap away in the comfort of knowing your model is in focus!

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