Mitsubishi HC3800 Post Calibration Grayscale

Posted on October 11, 2013 by Art Feierman

Calibrated color temps, 20 – 100 IRE: The first set was from our calibration of the engineering sample. The one below it, from the full production HC3800. In other words, the second set is pretty much what you can expect. You will notice it is a tighter set of numbers than the original sample, and that's why I'm showing both

Engineering Sample


20 IRE	6547K
30 IRE	6456K (dark gray)
40 IRE	6573K
50 IRE	6553K (medium gray)
60 IRE	6566K
70 IRE	6508K
80 IRE	6537K (light gray)
90 IRE	6734K
100 IRE	6565K (white)

Production HC3800 Projector


20 IRE	6393K
30 IRE	6402K
40 IRE	6506K
50 IRE	6527K
60 IRE	6490K
70 IRE	6546K
80 IRE	6513K
90 IRE	6454K
100 IRE	6604K

Overall, the first set was very good, and the full production projector has even a better, rather excellent set of numbers. Good color! Note, the original sample had a spike in color temp at 90 ire, which matched with the spike in gamma (see below). While minor, that's just the type of thing, one would hope that would get improved going from a sample unit to a production projector. With the full production projector, however the spike is effectively gone.

RGB Settings

Contrast
R	-3
G	0
B	-11

Brightness
R	3
G	0
B	0

Brightest Modes

You can't start with High Brightness as a default for a custom color temp. Sports mode at the moment (sample unit) is very green - over the top. For a brightest mode, the best we could come up with on this unit was combining the High Brightness color temp with the Cinema gamma (or possibly video) gamma. That gave us our 1083 lumens, which still isn't much more than our best mode at 965 lumens.