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Aperture | Depth Of Field

Depth of Field


Depth of field is how much of the photo is in focus. the way we do this is by using a wide aperture.

what is aperture?

Aperture, is a ring in the lens that you can alter depending on how much light you want in the lens. F1.8 is a wide aperture and can create blurry backgrounds. F9-F11 is where you can get everything in focus. The negative side to this is that it doesn't let in as much light.


Bokeh is when there is light in the background of a wide aperture photo and the blurred light turns into circles. the more aperture blades the lens has the more circular the bokeh is.
Next i am going to put what ive learnt into practice by taking photos using small and wide apertures on my 50mm F1.8.

This is a photo taken at F9 this is a fairly small aperture because everything in the picture is focused. To counter balance the small aperture I needed to have a slower shutter speed because i needed more light to create the image.

This is the exact same photo, However the aperture has been set to F1.8 which is a much wider aperture and allows more depth of field and can let more light into the lens.


After taking these photos I have learnt that it is easier to get a sharper photo using a wide aperture because if the aperture is between F1.8 -F3.5 the lens lets in a lot of light meaning that you will need to increase the shutter speed to around 1/1250 or more. 


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