Depth of field explained - Thu, 1 Jul 2010 What is depth of
field? Depth of field describes the range of distances in an
image within which objects are deemed acceptably in focus. A
lens only focuses on one particular distance, but by changing
the depth of field it is possible to decide whether what's
behind and in front of this point is also comes into focus.
Image: An aperture of f/4 was used to isolate just a few of
these models from the rest. Taking the image at an angle has
also restricted depth of field. What affects depth of field
Knowing what affects - and therefore, how to control - depth of
field is important, as it allows the photographer to place
emphasis on particular subjects within a scene. Portraits, for
example, benefit from shallow depth of field where focus is
placed only on the subject, so the photographer will typically
take steps to isolate them from other elements. Conversely,
landscapes usually require the opposite effect, in order to make
sure everything in both the foreground and far