Kodak 550 - Projection Distance Chart; Zoom Lens Usage

Long
Dimen'sion
of
Projected
Picture
40"
50"
60"
70"
84"
Distance in Feet from Projector
Lens
to
Screen
35mm
828 (28 x 40mm) Slides
(24x36mm) and 15fa-inch sq . Super-Slides
Zoom
Zoom
Zoom Zoom
3-inch
4-inch 5-inch
7-inch
Lens at
Lens
at
4-inch
5-inch
7-inch Lens at Lens at
Lens Lens Lens
Lens
3
3
,4"
6\4" Lens Lens
Lens
33,4" 6\4"
8 10
13 18 10
16Y2 9 12 16 9
15
9 12
15 21 12 20
11 14 19 11 18
11
15 19 27
14Y2 24 14 17 24 13 22
14 18 23 32 17
28
16
20 29 15 25
16 21 26 37 20 33Y2
19 24
33
18
30
- -
- ,_
.. -
-
1_
KODAK PROJECTION ZOOM LENS, 3¥4-to 6Y4-inch, f/3.5
This zoom lens lets you vary the size of the projected i mage so that it fills the screen without
your having to move either the projector or the screen. Also . if you wish . you can enlarge any
part of the picture on the screen.
USING THE ZOOM LENS
1. Focus the picture on the screen by turning the focus knob back and forth .
2. Slide
the lens barrel forward or back until the pictur e fills the screen.
3. At some projection distances it may be advisable to refocus the pic ture on the screen by
turning the focus knob for maximum sharpness.
7