Zoom Lens definition:
A lens allowing a camera to change
smoothly from a long shot to a close-up or vice versa by varying the focal
length.
Most entry level digital SLR cameras
are supplied with a zoom lens allowing the user to switch from wide angle shots
through to telephoto. Zoom lens’ are
highly flexible, however certain photographers will purchase specific lens for
dedicated purposes.
FOCAL LENGTH
The most important factor in any
camera lens is its focal length. This determines which type of lens it is, and
what subjects it will be able to photograph. Focal lengths range from just a
few millimetres up to over a metre, and can be loosely grouped as follows:
Lens focal lengths, types, and
uses
· Whilst the wide angle lens should generally be avoided
for portraiture because of the distortion effects, it can be used in certain
instances in a creative way.
· The higher the telephoto setting the shallower the
depth of field… you may notice this when photographing close up using a
telephoto setting of e.g. 100 mm
Some examples (not my own) :
Some examples (not my own) :
Image bank:
My Shoot:
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