What is Depth of Field

Depth of Field (DoF) is one of the terms used a lot in photography and if you don’t have a handle on it, it can seem intimidating. Let me share a quick and easy to understand outline to give you a quick boost of confidence.(Revised 2025)

I have a couple of photographs and some quick DSLR suggestions to share. Smartphones as easy to use software that gives you the same effect but to understand how depth of field concept improves your photography skills. The photo samples will give you a handle on this useful concept and the tips should work with your own DSLR or Mirrorless camera whatever the brand.

Remember Familiarity = Confidence with your Camera.

Foreground and background are blurred. Toulouse is in sharp focus.

What is Depth of Field?

Let me give you a quick ‘technical’ definition from a site I like called Photography Life:

Depth of Field is the distance between the closest and farthest objects in a photo that appears acceptably sharp.

Shallow DoF

If your DoF is shallow, like this photograph of Toulouse (above), it is focused around his head from his muzzle and cheek and forehead.

This is a narrow area (or layer if this helps) but it works perfectly to capture his fur texture and, critically, his sharp eye. The f-stop was f5 at the top end of the shallow range. This kind of setting is fantastic for a cat (or a doggy) closeup that focuses on your pet not the background.

Remember ‘Depth of Field’ is often shortened to DoF.

Cat Posing outside in the summer sun — Large F-Stop – f5

Deep DoF

If your DoF is deep with an f-stop of f15/f22 then from your toe tips to the distant edge of a room or garden is all in clear and sharp focus. This is definitely more a setting for wide open or landscape settings, or capturing cats in an environment like a garden or catio, or a pet walking on a beach or in a park.

Getting shot of your cat walking confidently on a harness looks spectacular when you can include a clear shot of the area you are both walking through.

See what I mean with this lovely landscape of the New Zealand coast? You need the distant hills to be sharp as well as the beautifully textured rocks for picture postcard quality. Sometimes a sharp DoF is just what you need.