Eve Spectrum ES07D03 monitor analysis

I use the word analysis rather than review because I pretty much only provide measurements of the monitor, not my judgment, and I don’t recommend the product so you can judge whether the monitor is good or bad after reading the post.

Notes.

  1. Spectrometer: LCE Intelligent HP350L (I have a reference instrument to calibrate the Y-axis of the spectrum and cancelled the original matrix calibration), Colorimeter: Klein K-10.

  2. The GtG convert to the MPRT is based on the formulae used in this thesis. “Analytical equation for the motion picture response time of display devices”.

  3. Some of the measurements were taken from different firmware as I was too lazy to re-measure.

OSD

Spectral Response

  • Sample rate 1nm, FHWM 6.5 .

  • Blue color peak 449nm, white color blue peak 449nm.

CIE1931 Colour gamut (Based on firmware 1.05)

Colour gamut Colour coverage
sRGB 141.5% 99.9%
Adobe RGB 97.5% 86.6%
DCI-P3(D65) 100.3% 95.4%
BT2020 63.9% 60.9%

INPUTLAG

50 times average lowest
Refresh rate 144hz FPS cap 360 VRR on 10bits 13.892 ms 10.012 ms
Refresh rate 144hz FPS cap 360 VRR on 8bits 13.367 ms 9.389 ms
Refresh rate 144hz FPS cap 75 VRR on 10bits 12.976 ms 5.729 ms
Refresh rate 144hz FPS cap 60 VRR on 10bits 14.301 ms 6.809 ms
Refresh rate 60hz FPS cap 360 VRR on 8bits 18.595 ms 10.451 ms
  • Testing tool is OSRTT ,Based on monitor fw106 PS5 test5 .

  • Input lag includes graphics card latency, currently OSRTT can only exclude USB latency.

  • To verify repeatability, I re-measured the XB323U GX to ensure that the system latency was reproducible.

GtG Response Time Measurement


▲In order to ensure that the gamma calibration is accurate, I have corrected the gamma in the test.


▲144hz High OD (fw106 test5)


▲144hz Normal OD (fw106 test5)


▲144hz User OD 11 (fw106 test5)


▲60hz High OD (fw106 test5)


▲60hz Normal OD (fw106 test5)


▲60hz User OD 11 (fw106 test5)

  • GtG measurement on firmware 1.05 → https://i.imgur.com/IvbRwN4.png .

  • ̶I̶n̶ ̶t̶h̶e̶ ̶n̶e̶w̶ ̶v̶e̶r̶s̶i̶o̶n̶,̶ ̶e̶v̶e̶ ̶h̶a̶s̶ ̶a̶d̶d̶e̶d̶ ̶V̶R̶R̶ ̶d̶y̶n̶a̶m̶i̶c̶ ̶O̶D̶ ̶g̶a̶i̶n̶.

  • I took an oscilloscope measurement to verify and updated OSRTT to today’s (6/7) version and the measurement results are completely different , The result is that there is no VRR dynamic OD support.

MPRT (Based on firmware 1.05)


▲Refresh rate 144hz, Normal OD, Exposure time 1/40 sec, Pursuit camera sync.


▲Refresh rate 144hz, Normal OD, Exposure time 1/40 sec, Pursuit Camera Sync , Duty cycle bright 25%

  • Refresh rate : 144hz & Normal OD >average MPRT of 5.709ms.

  • Refresh rate : 144hz & Normal OD & Duty cycle 25% >average MPRT of 1.736ms.

  • For comparison, the OLED MPRT at 120hz is 6.65ms and at 185hz is 4.32ms.

  • This monitor has red ghosting ,This is caused by the KSF backlight of Nano IPS.

Strobe Backlight Measurement (Based on firmware 1.05)

Backlighting time Brightness(nits) Duty cycle:White Duty cycle:Green Blue Duty cycle:Red Photodiode Probe Voltage Note
Short 45 nits 4.72% 4.68% 4.78% 4.12V
Medium 138.3 nits 14.75% 14.72% 14.82% 4.39V
Long 225.5 nits 24.75% 24.7% 24.82% 4.64V Clarity range slight offset to bottom of the screen
Custom Minimum 6.8 nits 2.12% 2.08% 2.15% 3.58V Flicker visible to the eye
HDR Peak 4.24V
  • With the 60 Hz strobe backlight, you can see monitor flickering with your eyes.

SDR - Uncalibrated Colour Measurement


▲SDR - Wide color gamut (target gamut DCI-P3/Gamma2.2)


▲SDR - sRGB mode (target gamut Rec709/Gamma2.2)

HDR600 Uncalibrated Colour Measurement


▲Target gamut is Bt2020/PQ, Measured window 100% range.

  • Compared to the old version, the new version of fw HDR is worse in of PQ and colour accuracy .

  • HDR full screen contrast ratio 15935:1, checkerboard contrast ratio 980:1 .

  • HDR has a PWM frequency of about 3167hz .

  • HDR and SDR use the same user white balance settings, but you can’t adjust it in HDR.

  • HDR edge localdimming is very responsive, but there is no blooming and flicker suppression.

  • Measurement window percentage does not affect PQ response.

Disadvantages

  • HDR will flicker in this screen. The earthquake night - Shadows of backstreets of Japan 6・4K HDR - YouTube

  • HDR localdimming may trigger redghosting in the above youtuber link

  • The severity of PQ inaccuracies should no longer be considered certified for FreeSync Premium Pro.

  • When used with other MSTAR chip monitors, if you turn on Windows HDR on both monitors, there is an bug that increases the latency of the other MSTAR chip monitor. (The average latency is 106% higher).

  • The dot sights are too small and the moveable range scales on all sights are too large.

  • When you adjust the gamma to 2.2, it causes the factory calibration to fail and you have to reselect the colour gamut to fix the problem.

  • ̶T̶h̶e̶y̶ ̶c̶l̶a̶i̶m̶e̶d̶ ̶b̶e̶f̶o̶r̶e̶ ̶r̶e̶l̶e̶a̶s̶e̶ ̶t̶h̶a̶t̶ ̶t̶h̶e̶y̶ ̶w̶o̶u̶l̶d̶ ̶a̶d̶d̶ ̶V̶R̶R̶ ̶d̶y̶n̶a̶m̶i̶c̶ ̶O̶D̶,̶ ̶b̶u̶t̶ ̶i̶t̶ ̶w̶a̶s̶n̶’̶t̶ ̶i̶m̶p̶l̶e̶m̶e̶n̶t̶e̶d̶ ̶u̶n̶t̶i̶l̶ ̶t̶h̶e̶ ̶F̶W̶1̶.̶0̶6̶ ̶b̶e̶t̶a̶ ̶t̶h̶a̶t̶ ̶a̶ ̶s̶i̶m̶i̶l̶a̶r̶ ̶f̶e̶a̶t̶u̶r̶e̶ ̶w̶a̶s̶ ̶i̶m̶p̶l̶e̶m̶e̶n̶t̶e̶d̶.̶ Still no VRR dynamic OD support.

  • No cables except for power cables.

  • HDR local dimming logic causes the greyscale colour depth test to look like a defect.

5 Likes

I have a bit to add on to that.

If you look at the lower intensities in your DCI-P3 gray balance, you can see from 0-20% it’s all over the place. I think that the only built-in sRGB calibration is for 2.2. When you toggle the gamma back and forth you get the DCI-P3 calibration with sRGB-limited primaries, which throws off the sRGB mode. But if you start up the monitor in DCI-P3 at 2.2 gamma you get the sRGB calibration, producing those skewed red and green hues in the 0-20% grays.

Basically, start up monitor or change profile with:
sRGB and 2.2 gamma: OK.
DCI-P3 and 2.2 gamma: FAIL. Grays are way off.
sRGB and other than 2.2 gamma: Sort of OK. Seemingly DCI-P3 calibration with limited primaries. White point is off. This setting is kind of a weird thing anyway since sRGB isn’t a simple exponential gamma curve.
DCI-P3 and other than 2.2 gamma: OK.

The only way to get properly grey-balanced DCI-P3 with 2.2 gamma is to flip-flop between 2.2 and another gamma and back again.

Edit: They should probably just disable the gamma setting with sRGB. sRGB is its own separate thing.

2 Likes