We start with the two Full HD models. Both the non-touch (2nd column in the comparison tables) as well as the touch model (3rd column in the comparison table) exceed the advertised luminance, but average results of ~270 nits or ~260 nits, respectively, are still not very good for a premium product. We can see big differences in terms of black value as well as the contrast. While the regular Full HD model even misses the advertised value at 645:1 (0.45 cd/m²), the touchscreen manages very good 1132:1. For comparison: The two Full HD panels in the ThinkPad T470 as well as the ThinkPad X1 Carbon 2017 are a bit brighter and often manage better results in the other disciplines, too.

The high-resolution WQHD screen performs better in our measurements. The advertised luminance is surpassed at 311 nits on average, and the contrast is also very good at 1300:1.

Only the touchscreen model of the T470s uses PWM regulation for to control the brightness. We can measure a flickering at 219 Hz as soon as the maximum luminance is reduced. The frequency is comparatively low and could cause problems for sensitive users (such as visible flickering).