A projector zoom allows you to increase or decrease the size of the projected image without moving the projector. The most common zoom ratio among today's projectors is 1.2, which means you can vary the image size by 20% by simply adjusting the zoom lens.
Epson PowerLite Pro Cinema 6030UB: 2.1:1
18. 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
19. 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
20. has a HDMI output
Devices with a HDMI or mini HDMI port can transfer high definition video and audio to a display.
84% have it
21. has manual focus
This allows to manually set the focus.
71% have it
22. USB ports
With more USB ports, you are able to connect more devices.
Optoma UHD51A: 4
23. power consumption operation
How much power the device consumes when it's switched on.