- Written by Ross Jones and Chris Eberle
- Published on 24 August 2009
On The Bench (Chris Eberle)
All measurements were taken off the screen (Carada Brilliant White, gain 1.4) from the seating position (10 feet back) using the Sony’s Cinema picture mode with the iris set to 50%. Equipment used: EyeOne Pro spectrophotometer, CalMAN Professional 3.3 analysis software, Accupel HDG-3000 signal generator.
Here is the pre-calibration color gamut and luminance chart. I measured both the Normal and Wide colorspaces. The choice is undersaturated or oversaturated. There’s no way to get the color points to the Rec 709 reference. The luminance readings were the same in either colorspace.
The out-of-box grayscale and gamma performance isn’t too bad. An average Delta E* of 5.2 is a barely visible error. The tracking chart shows that the white balance tends to be a little blue. The average gamma of 1.85 means that most dark scenes will be a bit gray and washed out. The default setting is Gamma 1, Colortemp Low.
After calibrating the Sony’s RCP (color management system), the luminance was much improved however, there’s no way to move the primaries. The Ideal Secondaries chart shows that when the actual primaries are used to calculate the secondary color position, they line up almost perfectly. Despite the inaccuracy of the color points, the color representation was excellent in actual content.
The post calibration grayscale and gamma were excellent with an average Delta E* of .9. Gamma was also improved greatly by using the Gamma 3 preset. The tracking chart shows a bit of warmth at the dark end (20% stimulus), but this was not visible on gray step patterns or in actual content.
With the iris set to 50% I measured a minimum black level of .0046fL (foot-Lamberts) and a peak white of 13.7041fL. This puts the on/off contrast ratio at 2979.15:1. This is excellent performance. This projector is bright enough to be used with a high-contrast gray screen which would improve the contrast ratio. My 1.4 gain Carada cut down the dynamic range a bit.
As you can see by the above charts, the HW10 responds very well to calibration. Out-of-box performance is above average but calibration will improve it to a high level. Choosing between the two colorspaces, I preferred the look of the Wide one. Normal was visibly undersaturated giving the image a somewhat flat look. Though Wide measured outside the Rec 709 triangle, I found the image punchy and three-dimensional without being overblown.