Chad stopped in Atlanta on a SE tour last week and did a video calibration of my HT. My primary video path is:
- Sony S470 BD Player
- Anthem D2 AVP
- JVC RS-25 projector (same as HD950)
- Prismasonic anamorphic lens
- Da-Lite High Power 141"x60" screen - 153" diagonal
in a total light-controlled dedicated HT room.
Having had several ISF calibrations over the last 10 years (each by a different calibrator), I must say that Chad did the most thorough calibration that I have experienced. His equipment setup was first rate, with a tripod-mounted EyeOne Pro sensor feeding his laptop, the laptop controlling his signal generator video source and the laptop simultaneously modifying the PJ's calibration settings via RS-232.
I'll skip all the steps that he went thru and go straight to results. Two huge visible improvements:
- awesome blacks: deep, inky blacks without loss of shadow detail
- smooth colors: pre-calibration I had gamma compression that caused what should have been a gradual color change to show as one area of a single color, e.g. a pancake makeup look to faces.
- RGB level tracking from +5/-6 to */-1,5
- gamma from 1.87 avg with a dip to 1.5 at 90 to 2.27 so flat I can't make out the variance
- DeltaE from 3.6 to 0.4
- color temp from 6560 to 6500 (pretty good for out-of-the-box)
I've read reports of calibration drastically reducing light level, but in my case the level went down only 13% from 31fL pre-cal to 27fL post-cal (iris full open pre/post).
In addition to the calibration on my HDMI path, Chad also tweaked and verified the component video input to the D2 (always HDMI from D2 to PJ) as I use that for cable TV to eliminate HDMI resync on channel switching.
The projector was new with only 80 hours on the bulb so Chad did two separate calibrations (the JVC only stores two pro calibration setups):
- 17fL with the PJ's iris stopped down (the JVC has a fixed iris, not dynamic) to reduce the viewed light level to 16-18fL target range
- 27fL with the iris all the way open, for use with 2.35 material (widescreen stretch from the Prismasonic spreads the PJs light over a larger area and reduces reflected light level by 25%). I can also switch to this setup as the bulb ages and dims. Or for sports.
In summary, Chad did a terrific job and his rates are very competitive (no travel charges either). I intend to ask him back for a touch-up at ~1000 hours on the bulb.
You can check Chad out at hdtvbychadb.com