The NATURAL picture mode was the most accurate out of the box when viewing SDR content (D65 color temp with Rec. 709 color space). Since the USER 1-6 picture presets settings are identical to the NATURAL mode, so I chose USER 1 as the basis for the best SDR calibration. I also set the LAMP POWER to Low
to reduce noise and maximize bulb life. Prior to calibration, the DeltaE measurements were between 2 to 6.
I increased the CONTRAST from 0
which clips whites just above 235. I left SHARPNESS along with COLOR and TINT at their defaults.
Since this projector’s strong suit is black level and it would probably be utilized in a darker room with light control, I set my SDR target gamma at 2.4. The default gamma for the USER 1 mode was 2.2. Under the GAMMA menu, I selected to CUSTOM 1 with a CORRECTION VALUE of 2.4. which got me closer to my target of 2.4 (or BT.1886).
The JVC-NX7 offers several additional Gamma adjustments including PICTURE TONE, DARK LEVEL, and BRIGHT LEVEL for each color (WRGB) which I used to further fine tune the projector’s gamma performance.
Under the WHITE COLOR SELECTION, I set the PICTURE TONE to -5. Under the BLUE COLOR SELECTION, I set the PICTURE TONE to -3, the DARK LEVEL to 2 and the BRIGHT LEVEL to -1. For SDR content, I set the COLOR PROFILE to BT.709. The COLOR TEMP pre-set was 6500K which measured an 7500K average (plus blue / minus red). I made some adjustments to the RED, GREEN, and BLUE GAIN to reduce grayscale to a 6500K average.The JVC NX7 has a traditional 2-point white balance adjustment. It also offers the ability to make fine grayscale adjustments using the COLOR SELECTION, PICTURE TONE, DARK LEVEL and BRIGHT LEVEL adjustment located under the GAMMA menu.
Post-calibration white balance was very good with a 6500K average. The average DeltaEs for grayscale and color were less than 2, with the majority of measurements being under 1. During calibration I set APERTURE (Dynamic Contrast) to manual but after I turned it to AUTO 1 to improve dark scene black levels. After calibration, the projector’s brightness output was 1118 lumens which produced about 17ftL on my 120” screen.