Canon EF 28 mm f/2.8 Handmatig - Pagina 5

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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.