Projector zoom allows you to increase or decrease the size of the projected image without moving the projector. Bigger zoom ratio provides more flexibility. The most common zoom ratio among today's projectors is 1.2. With a 1.2 zoom ratio you can vary the image size by 20% by simply adjusting the zoom lens.
Epson PowerLite Pro Cinema 6030UB: 2.1:1
16. power consumption operation
How much power the device consumes when it's switched on.
JVC DLA-X30: 0.8W
17. lamp life
This shows the lifespan of the light source. Beamers need to have their lamps (light source) replaced every now and then.
Vivitek Qumi Q7: 30000h
18. pixel density
Panasonic PT-AR100: 2977ppi
19. USB ports
With more USB ports, you are able to connect more devices.
Optoma EH501: 4
20. has manual focus
This allows to manually set the focus.
71% have it
21. component ports
The more component ports a device has, the more devices can be simultaneously connected, such as video game consoles and set-top boxes.
BenQ MS504: 6
22. composite ports
The more composite ports a device has, the more devices can be simultaneously connected, such as video game consoles and set-top boxes.
NEC NC1200C: 4
23. has a DVI connector
Devices that have a DVI connector (usually computers and notebooks) can be connected to the TV set.
13% have it
24. automatically cleaning
This feature automatically cleans the filter and doesn't need the user to replace it.
3% have it
25. HDMI ports
More HDMI ports mean that you can simultaneously connect numerous devices, such as video game consoles and set-top boxes.