Labo – L’impressionnant traitement antireflet de la dalle tactile du Lenovo Yoga 7i Carbon

Labo – L'impressionnant traitement antireflet de la dalle tactile du Lenovo Yoga 7i Carbon

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On test, the ultraportable Lenovo Yoga 7i Carbon is equipped with a touch screen with an anti-reflective treatment so effective that we didn’t think it was touch. Verdict under the Gloss Meter, which measures the reflectance of tiles.

For a few years in Digital, we test the ability of our device screens to reflect light using a gloss meter. First pioneered on smartphones, this measure has spread to televisions, monitors, and laptops. Thus, all laptops that pass through our laboratory are also subjected to the Gloss Meter to determine the reflection rate of their screen, and therefore its brightness. This measurement is also an integral part of the display score, just like colorimetry or contrast ratio. In fact, what could be more annoying than constantly adjusting your screen to limit reflections from surrounding light sources?

The Lenovo Yoga 7i Carbon’s anti-reflective treatment allows its panel to reflect just under 18% of light.

© Digital

Thus, this percentage of reflection generally varies between 10 and 60% depending on the type of panel used and the presence of an anti-reflection treatment applied by the manufacturers, being 100% equivalent to a mirror. In this game, gaming laptops and their matte panels generally perform better, with reflection rates below 20%; then come the glossy panels subjected to a more or less effective anti-reflective treatment, with 20 to 30% light reflection. Above 40% light reflection, we are dealing with a glossy panel without effective treatment.

lenovo yoga 7i carbon

The Lenovo Yoga 7i Carbon panel is truly tactile on our model.

© Digital

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A matte and touch panel

The Lenovo Yoga 7i Carbon, currently being tested in the lab, features a “PureSight” IPS panel that displays 2560 x 1600px with a 90Hz refresh rate. It’s also touch-enabled, something we hadn’t noticed. In fact, instead of having a glass overlay on the screen so that the slab is touch, the Yoga 7i Carbon has an integrated slab, like a non-touch screen, with a slight offset between the bezels and the slab. Lenovo’s French office, contacted on this issue, was unfortunately on vacation and we were unable to obtain data on the technology used. The only information we were able to collect refers to the manufacturer of the IPS panel: CSOT, which is none other than the manufacturer of panels for TCL, and which belongs to the latter.

lenovo yoga 7i carbon puresight touch screen

The touch overlay integration is invisible.

© Digital

Switching to the gloss meter confirms our first impression, with a light reflection rate worthy of the best matte panels with only 17.78% reflected light, while the Asus Zenbook S 13 Oled tested a few weeks ago reaches a maximum of 51.66% of reflected light.

Lenovo Yoga 7i Carbon Asus ZenBook S 13 Oled Reflection anti-reflective treatment

On the left, the Lenovo Yoga 7i Carbon; on the right, the Asus ZenBook S 13 Oled.

© Digital

So this is a good point for the Lenovo Yoga 7i Carbon, which offers touch without its drawbacks, namely reflections and the weight of the glass layer. The 970 g ultraportable test continues and can be read very soon in Digital.

Asus ZenBook S 13 Oled (2022)

Launch price €1499

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    1,559.90

  • fnac.comfnac.com

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  • baker.combaker.com

    1,499.99

  • darty.comdarty.com

    1,499.99

  • Market Fnac.comMarket Fnac.com

    1,509.98

  • fnac.comfnac.com

    1,799.99

  • top buytop buy

    1,555.94

  • LDLCLDLC

    1,556.90

  • material.netmaterial.net

    1,559.90

How the pricing table works

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