Htnut2000 back on May 10 reported 753 calibrated
peak lumens at 30 hours and we verified the methodology several different ways:
Join Date: May 2004
Location: Sydney Australia
Here are all the numbers you might need to calculate or check it your way:
Screen : 110 inch diagonal 16:9 Area:35.9 sq ft
21 Fc = 226 Lux
The best news is that after 30 hours the lamp has not lost any brightness.
The calibration however is drifting all over the place"It would be great to hear how many hours now on the lamp and what it is now reading.
And recently.....eyes&ears again
on 6/27 reported higher-than-rest-of-us lumens on his RS50 with only 30 hours yet on his lamp:
"Ran the numbers again last night. Lamp is now @ 30 hours. Throw distance is 16'.
In general, I don't think they have significantly changed from the readings at ~12 hours. The throw distance and zoom is slightly different now in the permanently mounted position but I was sure to use the same image size for the measurements. However, the ~30% drop in output at THX is still dissapointing
Normal lamp: 188 lux, 777 lumens
HI lamp: 293 lux, 1211 lumens
Normal lamp: 133 lux, 555 lumens
HI Lamp: 210 lux, 868 lumens
I'll check again at 50-75 hours.
My previous measurements are here:https://www.avsforum.com/avs-vb/showt...8#post20375348
Mark"I don't know about any other RS50 owners but this just fascinates the hell out of me.
Have there been any other reports anywhere
of being in calibrated mode and over even 700
peak lumens? Aren't we all at like around 600 or less? My two lamps when new were like 560. Within front 1/3 of widest lens throw.
Anyone else with these maybe-finally-closer-to-spec lamps
? I don't even want to suppose there is anything different with their projectors. Has to be the lamps, right? With all the 40 sales and lamps being replaced, hopefully new reports will start popping up. If you get one please let us know in this thread so it doesn't get buried.