Introduction to Depth of Field (DOF) in Photography


show more Depth of field (DOF) provides you with in-depth training on Photography. Taught by Ben Long as part of the Foundations of Photography: Lenses show less
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Depth of field (DOF)

You should already be comfortable with the concept of depth of field and understand how aperture choice impacts the depth of field in an image. If you're not, then go watch the Foundations of Photography: Exposure course or at least the depth of field and aperture bits of it. To shoot shallower depth of field, you need to use a wider aperture. One that has a lower f-stop number. So f/2.8 yields an image with less depth of field than f/11. Now the thing is not all lenses can open their aperture all the way to f/2.8.

For all sorts of complex physics and optical reasons, the lens has to be engineered specifically to manage an aperture of a particular size. This means that every lens has a maximum aperture size to which it can be opened and that size is written on the front of the lens. For example, here is a 50mm lens that has a maximum aperture of f/1.8. I know that because right here it says 1:1.8. Maximum aperture is often expressed as a ratio like this. Now check this out.

This is al...

Depth of field (DOF)
Video duration: 5m 3s 2h 33m Beginner

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Depth of field (DOF) provides you with in-depth training on Photography. Taught by Ben Long as part of the Foundations of Photography: Lenses

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