Olympus IS-1 - Manual (Page 55)

*The five pictures below are samples taken by a photographer using
the zoom lens. Notice the dimensions of the subject as the camera
zooms in. The three pictures on the right were taken without chang-
ing the subject's size. Notice how the background and foreground
tend to blur at increased focal lengths.
*Be sure to hold the camera firmly, as pictures tend to blur more
easily at longer focal lengths.
Angle of view and depth of field
Angle of view is directly related to the focal depth of field. (the dis-
tance the camera is able to focus in front of and behind the subject).
The greater the angle of view (wide angle), the greater the depth of field.
When the angle of view is narrow (telephoto), depth of field decreases.
The use of a converter lens (optional)
It is possible to attach a converter lens for an even wider angle
effect, or for additional telephoto power.
*Instead of 35 mm, a wide angle converter (0.8 x ) allows you to take
shots at an even wider focal length of 28 mm.
*Instead of 135 mm, a telephoto converter (1.5 x ) allows you to take
shots at an even longer focal length of 200 mm.
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