Display Analysis

Microsoft has gotten serious about display quality since the Surface 3 launched – and not the Surface Pro 3, but smaller, cheaper Surface 3. That was when they started to individually calibrate all displays on all devices, and the difference was dramatic. The average grayscale error level on the Surface Pro 3 was 6.4, with the display shifted to blue fairly dramatically, but the Surface 3 was 2.49. Since then, the company has refined their calibration, and at this point they are the only PC maker other than Apple to calibrate the displays on every product in their lineup. As such, Surface devices tend to have excellent color reproduction.

But a display isn’t just about accuracy. You also need a resolution that is high enough that you can’t really make out the individual pixels, and Microsoft has kept the same 267 pixels per inch with their 2736x1824 12.3-inch panel as the previous two generations. For most people, that’s high enough where going higher would just impact battery life for no reason.

Another key feature is contrast ratio, and here the Surface Pro series was lagging somewhat compared to the best in the industry, which includes the Surface Book which offers exceptional contrast. We’ll test that with the 2018 model and see if it’s improved.

Microsoft has also stuck with the sRGB panel in the Surface Pro 6, with the same “enhanced sRGB” mode available in the Windows 10 Action Center. To quote Microsoft on the matter:

“The Enhanced setting on the New Surface Pro is a profile within the sRGB space where through special hardware and proprietary color processing we take the mid-tones as close to P3-D65 color gamut as possible while leaving skin tones as is.  The overall color contrast is also enhanced.”

So the skin tones are unaffected but other colors are made more vivid. Although the Surface Pro series is generally incredibly accurate, running in a pure sRGB mode can feel a bit dull to some customers, so those customers can leverage the enhanced mode for a less accurate, but more punchy color scheme. Those that need or want sRGB can have it with the tap of a button. It’s a good compromise since they’ve stuck with the sRGB panel again this year.

Microsoft wants to showcase their platform with Surface, and on a device like Surface Studio they’ve done that, offering sRGB, P3 D65, and DCI-P3 gamut support, but with the move to HDR as well as wider color gamuts, it was disappointing to not see any of the Surface lineup offer HDR support. Perhaps the Surface Pro isn’t the right vehicle for this though, due to the power requirements of HDR impacting battery life, but if Microsoft is going to continue to push technology in the Surface series, it’s something we should be expecting soon.

To test the Surface Pro 6 display, we use SpectraCal’s CalMAN software suite, along with an X-Rite i1Display Pro colorimeter for brightness and contrast readings, and the X-Rite i1Pro 2 spectrophotometer for color accuracy testing.

Brightness and Contrast

Display - Max Brightness

Display - Black Levels

Display - Contrast Ratio

The Surface Pro 6 does improve overall peak brightness somewhat compared to the previous model, but the big improvement is the black level, which is significantly better on the latest Surface Pro, bumping the contrast ratio up to over 1500:1. The difference may not seem like a lot compared to the outgoing model, but the improved contrast was immediately noticeable when powering on the new device. This was probably achieved by using better aligned panels in the new display. It still can’t quite match the Surface Book 2, but it’s much closer.

Mininum brightness is 5 nits.

Grayscale Accuracy

SpectraCal CalMAN

Display - Grayscale Accuracy

Every review unit is always going to be a bit of a lottery, although hardware calibration at the factory will fix most of the display issues. The grayscale accuracy of the Surface Book 2 we reviewed earlier this year was a stunning 0.87, but the new Pro 6 can’t quite match that, although with a dE2000 well under 3 across most of the range, it would still be considered one of the most accurate displays around. Gamma isn’t exactly at the 2.2 expected though, and the blue levels do drop off a bit as you close in on 100% brightness.

Gamut Accuracy

SpectraCal CalMAN

Display - Gamut Accuracy

The gamut test checks the 100% levels for all of the primary colors (red, green, and blue) as well as the secondary colors (cyan, magenta, and yellow) and as usual a lower error level means that the display is closer to what it is supposed to be displaying. The Surface Pro 6 comes in with a stellar 1.19 average error level, which is practically imperceptible. At 100% blue, the blue levels are a bit lower than they should be, which is something we saw in the grayscale as well.

Saturation Accuracy

SpectraCal CalMAN

Display - Saturation Accuracy

Our saturation sweep tests 4-bit steps across the entire range of primary and secondary colors, and other than the 100% blue levels we had already seen in the other tests, the saturation is almost perfect with an average error level just over 1.0.

Gretag Macbeth

SpectraCal CalMAN

Display - GMB Accuracy

The Gretag Macbeth colorchecker tests not only the primary and secondary colors, but also a wide range other points including the important skin tones. None of the tested colors showed an error level over 3.0, which is excellent, and the overall average error level was just 1.35.

This relative colorchecker shows you the Surface Pro 6 displayed colors on the top, compared to the expected colors on the bottom, and as you can see the display is more or less perfect.

Display Conclusion

We often harp on the power of individually calibrating displays, and this Surface Pro 6 review model is an ideal candidate to discuss why. Here we have a display that shows more or less ideal reproduction of almost all colors, but the display can’t quite hit the full 100% level for sRGB blue. Rather than using an icc profile to correct this, which would likely cause crushing and banding, the entire range of blue is corrected to the best it can be, but 100% blue and just under is a bit off. You can’t use calibration to make a display show more color gamut than it’s capable of, and this Surface Pro 6 unit can’t quite hit 100% blue, but thanks to the calibration, that deficiency is almost imperceptible to the eye.

It would be nice to see Microsoft embrace HDR on Surface Pro in a future model, but the power costs would be high enough that the drop in battery life would likely be disliked by many of their customers.

Overall, as we’ve come to expect with all Surface devices, the display on the Surface Pro 6 is one of the best around, with accurate colors, high resolution, and now, even better contrast.

GPU and Storage Performance Battery Life and Charge Time
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  • melgross - Wednesday, October 17, 2018 - link

    I’ll take my iPad Pro any day over this. There’s far more software than you think, and performance beats most of these. Reply
  • damianrobertjones - Sunday, February 10, 2019 - link

    Nah. I have a first gen iPad pro and it's a toy, to me, compared to a Surface Pro.

    Opinions vary.
    Reply
  • murph17 - Tuesday, October 16, 2018 - link

    True. Mostly just another spec bump. True re-design/update is rumored for next year. Ready for it! Reply
  • erwos - Tuesday, October 16, 2018 - link

    I love my SP4, but you are not wrong. The SP6 is like the third generation of the SP4, and the SP4 was not all that different from the SP3 to begin with. Microsoft needs to cure the core problems on the platform (wireless speed, storage speed, and bad long-term reliability) and bring the physical IO situation to modern standards. I could live without the graphical updates, but the rest of it is non-negotiable. It's 2018, almost 2019, and it doesn't have USB-C. That is just not acceptable. Reply
  • jimbo2779 - Sunday, October 21, 2018 - link

    While I don't disagree that it probably should have usbc for future proofing I really haven't seen anything making use of it. There always seems to be an alternative at the minute. Reply
  • dirtyvu - Thursday, November 1, 2018 - link

    I've never had any long-term reliability problems (knock on wood) and I've owned the Surface Pro 2, 2 Surface Pro 4, and a Surface Pro 2017. I think the SP2017 was a big step up from SP4. My SP4's battery life was borderline terrible as with my workflow, I would get maybe 3 hours of battery life on a single charge. Sleeping was awful so I basically shut down the SP4 to conserve battery. But the 2017 model (both i7, 8GB, 256GB) would get nearly a full work day's worth on the same workflow. Reply
  • fallaha56 - Tuesday, October 16, 2018 - link

    Can only hope MS ditch Intel for a 7nm AMD APU for the next gen (or possibly ARM) Reply
  • HStewart - Wednesday, October 17, 2018 - link

    Never in the Surface Pro or Surface Book, possibly one day in cheapest Surface. Microsoft try ARM before and it failed. It interesting Microsoft has Windows for ARM ( Qualcomm ) and don't even use it in there own product. Sounds like Qualcomm paid Microsoft to developed Windows for ARM. Reply
  • SaolDan - Wednesday, October 17, 2018 - link

    I have the same dream. Reply
  • francescop1 - Tuesday, October 16, 2018 - link

    How is the i5 SP6 beating the Surface book 2 at the h264 tests? They both have 8th gen quads, while the SB2 have active cooling and a higher TDP. It doesn't make sense.. Reply

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