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The Lenovo ThinkVision P27u-10 ($439), a 27-inch productivity monitor, offers the color accuracy and range of ergonomic features seen in its larger counterpart, the 32-inch ThinkVision P32u-10. Its high resolution makes it good for viewing small text, cramped spreadsheets, or fine detail in diagrams, while its knack for accurately rendering colors puts it in good stead for handling photos and illustrations. The P27u-10 doesn’t have quite the graphic arts chops of the ThinkVision P32u-10 we tested alongside it, and it has a more limited port selection, but it comes in at a much lower price.

A Flexible Stand, and Well-Placed Ports

The P27u-10 measures 20.2 by 24.1 by 10.6 inches and weighs 15.3 pounds. Its 27-inch in-plane switching (IPS) screen offers UHD, a.k.a. 4K, resolution (3,840 by 2,160 pixels) at a 16:9 widescreen aspect ratio. Like the ViewSonic VP2785-4K and other 27-inch UHD monitors, this ThinkVision has a pixel density of 163 pixels per inch (ppi). This is higher than the Lenovo P32u-10, whose pixel density is 138ppi—the larger the screen at a given resolution, the more spread out the pixels are and thus the lower the pixel density.

The P27u-10’s stand and cabinet are matte black. The top and side bezels are 0.3 inch across, while the bottom bezel is an inch thick. Its deceptively simple stand packs in a full set of ergonomic features. The base is a 10-inch-diameter disk that is seated on another disk concealed beneath it, which lets you rotate or swivel the monitor up to 45 degrees in either direction. The stand’s shaft, which extends upward from the back of the disk, meets the cabinet at a joint at which you can tilt the top of the monitor from 5 degrees toward you up to 30 degrees away. You can also pivot the cabinet in either direction from landscape to portrait orientation and back and adjust the screen’s height up to 4.2 inches.

Lenovo ThinkVision P27u-10 portrait mode

The P27u-10’s port selection is about average for a business monitor. It lacks the P32u-10’s dual Thunderbolt 3 ports—which, for one thing, enable you to daisy-chain a second 4K monitor—opting instead for a single USB-C port. It adds two HDMI ports, a DisplayPort connector, a hub of four USB 3 ports, and an audio-out jack. The ports are relatively easy to access; the USB 3 hub faces sideways in back near the monitor’s left edge, and pivoting the bottom of the monitor toward you (from either side) reveals the otherwise downward-facing ports.

Lenovo ThinkVision P27u-10 rear view

Some Unorthodox Navigation, Though

I found navigating the on-screen display (OSD) confusing at first. It’s controlled by four physical buttons next to the power button at the right-hand end of the monitor’s bottom bezel. In testing, I use the OSD to set the display’s color mode to one of the spaces that we test in, such as sRGB, Adobe RGB, or DCI-P3. Usually, the menu system is straightforward, and I can easily tweak the settings as needed in a minute or so without referring to the manual. Navigating the P27u-10’s OSD was baffling, but I figured it out in time.

Pressing the menu button (next to the power button) reveals three icons, one for brightness on the left, a nondescript one in the center, and one with an arrow pointing to a menu on the right. Left and right arrows and an OK button appear above their respective buttons. To actually access the menu items, you have to keep pressing the OK button. Pressing it once reveals options such as Color, Input Signal, and Scenario Mode, to which you can navigate using the arrows. Pressing it again while under Color brings up Preset Modes (with the option to navigate left or right to custom modes), and pressing it once more reveals these modes: sRGB at two different color temperatures (6500K—which we use—and 5000K), Adobe RGB, DCI-P3, BT.709, Neutral, Reddish, and Bluish.)

Lenovo ThinkVision P27u-10 left angle view

Once I figured out this navigational system, it was easy enough to use, but it required a good bit of trial and error to learn.

Testing the P27u-10: Accurate Colors

For the P27u-10, Lenovo claims a Delta E of less than 2, representing good color accuracy, for both the sRGB and Adobe RGB color spaces. Delta E (dE for short) is the difference between the hue of a displayed color and the input that the monitor received. The dE figure that appears in monitor specs is the average of a large number of individual color readings from across the spectrum; the lower the value, the more accurate the color. Many professional monitors tout a dE of less than 2. The P27u-10 hit that mark for both sRGB and Adobe RGB. (See how we test monitors.)

I used our standard test gear, consisting of a Klein K10-A colorimeter, a Murideo SIX-G test pattern generator, an X-Rite i1Basic Pro 2 color profiler, and Portrait Displays CalMAN 5 software, to perform our color accuracy, luminance, and contrast-ratio testing. Out of the box, the P27u-10 turned in a dE of 1.59 in sRGB and 1.85 in Adobe RGB. The monitor’s color accuracy was not that good for DCI-P3, a color space geared to digital cinema, for which it turned in a sub-stellar 4.56.

Lenovo ThinkVision P27u-10 Adobe RGB gamut

In color-gamut coverage, the P27u-10 did fairly well with sRGB, covering 96.8 percent of that color space, and Adobe RGB, with 97.9 percent coverage (see above). It did a decent job with DCI-P3, with 95.1 percent coverage. In testing using standard settings in the three aforementioned color modes, it fell short of its 350-nit (candelas per meter squared) rated luminance, doing best in sRGB, where I measured it at 260.1 nits. It also slightly exceeded its 1,000:1 rated contrast ratio in the modes we tested, turning in a ratio of 1,012:1 in sRGB.

In addition to our formal testing, I did some ad-hoc viewing of photos and videos with the Lenovo. Color in photos looked bright and accurate, and contrast and dynamic range were good. Video quality proved more than adequate for casual use.  

Biz Chops, Plus Realistic Color

I see the Lenovo ThinkVision P27u-10 as a premium productivity monitor, with a large, high-resolution screen and good color accuracy for photos and still images in the sRGB and Adobe RGB color spaces. The P27u-10 packs a full set of ergonomic features including pivot control, which is handy for photographers who want to view images in portrait orientation as well as anyone seeking easy access to downward-facing ports.

Lenovo ThinkVision P27u-10 rear angle view

Its port selection is more limited than many recent business monitors such as the Dell 27 USB-C Monitor (P2720DC), whose dual DisplayPort connectors support the automatic daisy-chaining of multiple displays. But it is a good choice for companies wanting to get the most from their employees, especially if some of their work involves photos and graphic design.

Lenovo ThinkVision P27u-10 Specs

Panel Size (Corner-to-Corner) 27 inches
Native Resolution 3840 by 2160
Aspect Ratio 16:9
Screen Technology IPS
Rated Screen Luminance 350 cd/m^2
Rated Contrast Ratio 1000:1
Pixel Refresh Rate 60 Hz
Adaptive Sync NA
Video Inputs DisplayPort, USB-C, HDMI (2)
USB Ports (Excluding Upstream) 1
VESA DisplayHDR Level NA
Dimensions (HWD) 20.2 by 24.1 by 10.6 inches
Weight 15.3 lbs
Height-Adjustable Stand? Yes
Tilting Stand? Yes
Swiveling Stand? Yes
Landscape/Portrait Pivot Yes
Warranty (Parts/Labor) 3 years

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