Projectors Features and what to look
- measured in ANSI lumens.This has become very subjective, due to
the big increases in output we reckon that a fair guide is - under
1000 requires quite dark conditions for good colour quality, 1500+
is suitable for most conditions except for direct sunlight. A large
conference hall would require 2,000+ and with the price of 3,000
falling - this should be your target.
Size - Projectors that are to be carried
on public transport should be less than 4kg. If the unit is being
used only within one building or transported by car then 4 to 7kg
- Although most models claim to be SVGA (800x600) and XGA (1024x768)
compatible, it is a good idea to match the resolution to that of
your laptop computer.
- NEC, Plus Epson and several others offer a PCMCIA type II card
slot, this allows you to export your Powerpoint™ Presentation
in JPeg format and then save them to a Flash Memory card and do
your presentation without a computer. Sony have their own version
of this that works with their Memory Stick™ memory - this
also has some software that allows you to do some fades.
- Those projectors that are marked "resolution/video"
have proprietary soft-ware for enhancing the video performance.
Pure data projectors are not considered by the Home Cinema enthusiast
to have good enough colour performance - hence this distinction.
Future - Projectors
will get improved contrast ratio - NEC have released their new model
HT1000 with an adjustable iris behind the lens that allows the contrast
to be adjusted (at a sacrifice to brightness) from 2000:1 to 3000:1
- this takes it into the realms of CRT television!
On board ram - similar to that in a
personal organiser - will become more prevalent in the lower cost
projectors, having the ability to store a limited amount of presentations.
These can be run directly from the projector using PowerPoint™
and not reverting to the Jpeg format.
What to expect? - Projectors are getting smaller,
brighter, quieter and lamp life is increasing. Superbright two years
ago meant 700 lumens - it now means greater than 3,000 lumens and
cheap meant under £2,500!
We didn't see this coming - over the last 12 months manufacturers have all gone for the same grond (2,000 lumens XGA & quiet) and are just knocking off all the additional features you used to get to make them as cheap as possible.