| LCD
Projectors
Key Considerations
Lens Specifications
If you were buying a camera, you wouldn't put down your cash without
learning about what type of lens came with it. The same rule applies
to projectors.
With zoom lenses
being nearly standard on today's projectors, the important question
is how much a lens' f-number (the smaller the number, the more light)
changes at different zoom settings. If the change is minimal your
image will remain uniformly bright regardless of lens position.
Some lenses
are now manufactured using lightweight plastics. If weight is not
an issue, try to find a machine with an all-glass lens. Glass is
the optimal filter for projecting images and will give you a clearer
picture. However, glass lenses do make a projector heavier, so pick
plastic if you are going to be on the road a lot.
Optional lenses
are also available through some manufacturers and resellers. If
your conference room machine will be called upon to project at different
positions, angles, and brightnesses, you should ask about interchangeable
lenses.
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