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DIFFERENT LENS
EFFECTS
1. C H A N G E S IN R A N G E
Showing the differences
in camera range when
pictures are laken From
the same position but
using
different
focal
length lenses.
In different lenses, there is a variance in the degree of clarity and also in their focal lengths. There is,
however, a much more important reason for interchanging lenses: that is. to take advantage of the
difference in their ranges according to their respective focal lengths. Let US examine this more closely.
All of the above photos have been taken from the same position but using lenses of different focal
lengths. The shorter the focal length of Che lens, the wider the area covered by the picture, but
the objects in those pictures all appear small. The longer the focal length, the narrower the field
covered by the resulting picture, but in these cases the image itself appears bigger. The use of lenses
of different focal lengths then becomes a necessity. Tor instance, when we take photos of a group
of people in a small room against a blank wall background or when taking a picture of a large building
when it is not possible to move back the necessary distance, the use of a lens of small focal length
is of advantage. On the other hand when picking out a subject from a large area, and it is not
possible to get closer, the use of a long focus or telescopic lens is a beneficial adaption.
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