- Written by Chris Eberle
- Published on 15 February 2010
- Optoma HD8200 Single-chip 1080p DLP Projector
- Page 2: Design of the Optoma HD8200 DLP Projector
- Page 3: Setup of the Optoma HD8200 DLP Projector
- Page 4: The Optoma HD8200 DLP Projector In Use
- Page 5: The Optoma HD8200 DLP Projector On the Bench
- Page 6: Conclusions About the Optoma HD8200 DLP Projector
- All Pages
On The Bench
Equipment used: EyeOne Pro spectrophotometer, CalMAN Professional 3.3 analysis software, Accupel HDG-3000 signal generator, Spears & Munsil Benchmark Blu-ray disc.
All measurements were taken off the screen (Carada Brilliant White, gain 1.4) from the seating position (10 feet back). Though I did my calibration using the ISF Day mode, you would get the same results in User mode.
The out-of-the-box gamut measurement was only fair with magenta being quite a bit off. This was in the ISF Day mode with color temp defaulted to Medium. Luminances were also off their targets by as much as 6fL.
Pre-calibration grayscale ran fairly cool with an average temp of 7887 Kelvins. The gamma curve in the Film preset was quite poor and white was crushed at the 80 percent level and above.
After calibration, color was markedly improved with secondaries lining up nicely. Luminances were also excellent after adjustment of the Color control, missing the targets by no more than .5fL. Nothing could be done about the positions of the primary and secondary colors. There is only one gamut choice for HD signals.
Post-calibration grayscale and gamma were excellent with a Delta E average of 1.0. It only required small changes to the gamma controls to get nice flat tracking with an average value of 2.29.
Contrast performance was quite good with a minimum black level measurement of .0026 foot-Lamberts and a peak white value of 13.4395 fL for an on/off ratio of 5169.04:1. This was with the auto iris turned off. Dynamic contrast was perceptibly higher with the auto iris set to Cinema 1. Shadow detail was excellent with every bar of a 0-10 percent step pattern showing clearly without any crushing. The top end of the luminance scale was also excellent with proper rendering of above-white information without a color shift.
Video processing is handled by a proprietary solution unique to Optoma products. I tested the HD8200 using an Oppo BDP-83 in source direct mode. Performance on source adaptive tests was good with the only failure being the 2:2 clip. Edge adaptive performance was excellent with above-average handling of the jaggies tests. The HD8200 correctly handles a 24p signal displaying it at 48Hz with no observed flicker. When PureMotion is off, frames are doubled. Turning on PureMotion increases the area of each frame that is interpolated. 60Hz signals are displayed unaltered at an output refresh rate of 60Hz.