Ricoh Hadar-PJ1 Y091 Technical Training Manual - Page 4

Browse online or download pdf Technical Training Manual for Projector Ricoh Hadar-PJ1 Y091. Ricoh Hadar-PJ1 Y091 33 pages.

See the specifications table in the service manual for more details.
Contrast: Compare with Sirius-PJ1 which has a contrast of 2000:1
What does '9000:1' mean?
It means that the white areas are 9000 times brighter than the black areas.