Affordable Projectors for Non-Dedicated Home Theater Rooms - Mitsubishi HC5500 & Elite Cinema Screen
- Written by Ross Jones
- Published on 27 December 2008
- Affordable Projectors for Non-Dedicated Home Theater Rooms - Mitsubishi HC5500 & Elite Cinema Screen
- Page 2: Design and Setup of the Mitsubishi HC5500
- Page 3: The Elite ezCinema Plus Portable Screen
- Page 4: Using the Mitsubishi HC5500 Projector and Elite ezCinema Plus Screen
- Page 5: The Mitsubishi HC5500 Projector on the Bench
- Page 6: Conclusions about the Mitsubishi HC5500 Projector and Elite ezCinema Plus Screen
- All Pages
On the Bench
Uncalibrated, the color temperature was on the hot side (too blue). After calibration, the overall temperature was closer to D6500.
The uncalibrated RGB levels indicated red and green in the right place, but blue was far too high (the graph is an indication of gray scale tracking, i.e., whether the image stays white at all IRE levels or has specific tints at various IRE). After calibration, blue was closer to where it should be, but unfortunately, red and green were not nearly so smooth as they were in the uncalibrated state. Calibration of one item often affects others. The HC5500's color controls are limited.
Gamma before and after calibration were insignificantly different (2.05 and 2.08 respectively).
There is plenty of brightness with this projector, so it works well in semi-darkened rooms. The contrast, on the other hand, is not very good. ANSI CR was 270:1, and the Full On/Off CR was less than 1000. I did not activate the Dynamic Iris for the measurements, because the iris does not generate true contrast. The iris simply makes dark scenes look better by closing down and producing less brightness so you won't see the leakage in the dark areas of the scene. But this also makes the lightest areas darker. We can call this inter-frame contrast, because it measures the contrast between the dark areas of a dark scene frame that is shown with the iris closed down, and the light areas in another frame in a different scene that does not have dark areas, so the iris remains open. True contrast is measured within a single frame, between the lightest areas and darkest areas. Maximum contrast cability would be found within a single frame that has regions at 0 IRE and regions at 100 IRE, which takes into account not only light leakage, but the flare properties of the lens. We use the ANSI test pattern for this. Full On/Off contrast is also measured, but it is rare that a movie scene frame is totally black (0 IRE) or totally white (100 IRE).
I think the low contrast may be because Mitsubishi has to use lower cost LCD panels to keep the price down, and they simply cannot stop leakage through the panels with such a high output bulb. This leakage is seen in dark areas of a movie scene and also in the 0 IRE test pattern. Nevertheless, the image was pleasing and satisfactory.
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