|
|
Dell
2300MP
|
NEC
LT265
|
Dell
5100MP
|
NEC
MT1075
|
|
Group Size
|
Any Size
|
Any Size
|
Any Size
|
Any Size
|
|
Max Resolution
|
1024x768 pixels
|
1024x768 pixels
|
1400x1050 pixels
|
1024x768 pixels
|
|
Native Resolution
|
XGA
|
XGA
|
SXGA
|
XGA
|
|
Brightness
|
2300 Lumens
|
2500 Lumens
|
3300 Lumens
|
4200 Lumens
|
|
Image Size
|
24-292 inches
|
30-500 inches
|
31-295 inches
|
25-500 inches
|
|
PC Input
|
X
|
X
|
X
|
X
|
|
TV/VCR/DVD
|
X
|
X
|
X
|
X
|
|
Manual Zoom/ Focus
|
X
|
X
|
X
|
X
|
|
Sound
|
X
|
X
|
X
|
X
|
|
Contrast Ratio
|
2100:1
|
1600:1
|
2500:1
|
800:1
|
IEEE recommends the following brightness standards (brightness is measured in ANSI lumens):
-
4200 lumens and below - High brightness(Lots of natural light near screen, medium/large windows with no blinds) with precise images and details
-
3000 lumens and below - High brightness(A little natural light falls on the screen) with simple images
-
2500 lumens and below- Medium brightness(Medium natural light, small windows in room without blinds)with precise images and details
-
2300 lumens and below - Medium brightness(No natural light, room is blacked out) with simple image
Resolution
Resolution is based on the type of computer that you will be using:
Every projector has a 'native' resolution (sometimes called 'true resolution'), This is the maximum number of pixels it can actually project individually. so an SVGA projector can only display 480,000 pixels at one time. Sound like alot? Yes, but if you take a typical projection screen of 2 metres width, each pixel is going to be a quarter of a centimeter wide, whereas with an XGA projector the image is going to be under a fifth of a centimeter wide, and over 60% more pixels are displayed. This means the image is going to be sharper and less 'blocky' when projecting with an XGA monitor.
The resolution does not just affect how sharp your image is, it also affects the compatibility of your projector with your computer. If your computer is sending a signal to the projector that is XGA, and your projector has an SVGA resolution, this will cause problems. Most projectors have compression technology, so you'll still see an image, but you will loose sharpness.
How do PC users determine their resolution?
Go to Control Panel and select Display. Then click on the last tab Settings. In the bottom left corner there is an area called Screen Resolution. If it reads 800 by 600, you are running in SVGA mode. If it reads 1024 by 768, you are running in XGA mode. If it reads 1280 by 1024, you are running in SXGA mode.
MAC users on an Apple Macintosh, go to Monitors section of your Control Settings. Depending on what type of MAC you are using, you will find a similar setting to that described above.
