The 6710 was not as bright as last year’s 4910, with an average drop of about 250 lumens from that model. It is equally bright in most modes and dropping an average of 200 lumens in Cinema, Film and Photo modes. All of the modes were set to Low lamp power by default, which reduced the lumen output by another 35%, but grayscale was slightly better by default in low lamp mode. Unlike other JVC projectors, grayscale in Cinema or THX modes was much too red in the lower IREs. Gamma was too low in the Normal preset, averaging right around 2.0, but was right on 2.2 for the THX preset.
Grayscale calibrated reasonably well, with an average Delta E of only 1.8, only exceeding 3 at the 20 and 40 IRE levels. The RGB balance was also good and other than a bump in red at 40-50 IRE, was consistent across the whole IRE range. As we’ve seen with other JVC projectors, adjusting Gain has a greater effect on the total IRE range than Offset does. So, if you adjust Gain first, then Offset, you don’t need to check back and forth between the two more than once.
Again, as with prior JVC projectors, I used the custom gamma of 2.4 to achieve an overall gamma of 2.2 or higher. This results in a pretty smooth gamma with an average of 2.18. There’s also the ability to do custom gamma adjustments, but the presets work well enough if you choose the appropriate one.