--- Forwarded Message from [log in to unmask] ---
>From: [log in to unmask]
>Date: Fri, 6 Apr 2001 09:50:45 -0400
>To: [log in to unmask]
>Subject: Re: #6049 Document Camera
Most document cameras have comparable features.
Here are some basics you might consider:
- capable of transmitting any visual image
- allows for two and three dimensional objects
- camera operable in low light conditions
- variable focus ability
- zoom
- keystone correction feature
- handles NTSC, as well as foreign standards (PAL, SECAM)
- 135 degree tilt (so you can use for head shots as well as documents)
Another feature on which to compare similar models is the bulb
- brightness & bulb life factors
- double-port for on-the-fly switching when a bulb burns out
Also consider the output of the projected image (expressed in lumens)
Finally, for an all-purpose machine, depending on budget and intended use:
- auxiliary inputs (for throughput of video signal from other
sources such as vcr or computer)
- sound-handling capability
it never hurts to have PA ability
happy shopping!
bruce
Bruce Parkhurst
Boston University