Kodak Slide Projector Operating Manual page 17

Single Slides
Selecting Slide
Projection Lenses
KODAK CAROUSEL® Slide Projector
To project single slides, slide the power switch on. Remove the tray and insert
a slide upside down into the projector gate. Push the slide all the way down.
After viewing the slide, press
forward, reverse, or the select bar to eject the slide.
When buying a lens, consider features such as focal length (measured in
millimetres), aperture (designed as an f/stop), and the lens design (curved or
flat).
When selecting a lens, remember that the shorter the focal length (i.e., the
smaller the f/number), the brighter the projected image. Also, a curved-field
lens, in combination with cardboard open face mounts from an automated
mounting process, provide superior projection quality. A flat-field lens is the
best choice for glass-mounted slides.
Operation
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