Fellow AVS Forum member laugsbach
and I live in the same metro area, so we have visited each other's home theaters a couple of times. We both bought PT-AE3000U projectors four years ago, and now we have both upgraded to the PT-AE8000U.
laugsbach invited me over to run a DIY grayscale calibration on his machine. I was excited about the chance to measure two different projector/screen/room combinations using the exact same color sensor, and to see how similar/different the calibrated settings would turn out.
Our rooms and throw distances are similar, although laugsbach has a somewhat larger room and screen. The more important difference is the screen material. My screen is an Elite Cinewhite matte white vinyl with 1.0 gain. laugsbach's screen is an acoustically transparent type for behind-the-screen speaker placement (which is very cool I might add). I'm sure he will chime in and give more details about this material.
Both projectors were calibrated in REC709 Picture Mode with Lamp in ECO and Dynamic Iris OFF. Please note: we could only spend about two hours with laugsbach's machine. If we had had more time to tweak, it could certainly be dialed in further. Luckily, it measured very good with minimal adjustment, and I must say that the adjustments we did make had quite a visible effect. I will leave it to laugsbach to comment further regarding the resulting calibrated picture quality.
I don't want to fill the forum with all of the available ColorHCFR graphs, but the RGB Levels and Color Temperature graphs are the most interesting and are worth posting for comparison. (Note, ignore color readings below 10 IRE; the Eye One Display sensor readings are essentially meaningless when measuring 0 IRE, that is, video black).
Default RGB laugsbach
Default RGB HMenke
Clearly, Green is running hot compared to Red and Blue on both machines. This definitely gives a greenish tint in the default REC709 mode.
Default Color Temperature laugsbach
Default Color Temperature HMenke
Actually the Color Temperature tracks pretty well, but as we've seen the color balance is off across the board. Next up: a comparison of the calibrated results.
Calibrated RGB laugsbach
Calibrated RGB HMenke
Calibrated Color Temperature laugsbach
Calibrated Color Temperature HMenke
Now comes the REALLY interesting part. How similar were the settings used to achieved these similar calibrated results? As it turns out....not at all similar!
Here is an Excel spreadsheet that shows the calibrated settings of each machine side-by-side. There is really no comparison. My projector/screen/room required a lot
of adjustment to bring it into line, whereas laugsbach's projector/screen/room was already very close to ideal and required only minor adjustment to produce a calibrated image.
PT-AE8000U Calibration Settings v1.0 laugsbach & HMenke 01-26-2013.xlsx 14k .xlsx file