LG 29UM68-P vs LG 27UD58-B

Because of the wide aspect ratio, LG offers a built-in picture-in-picture mode (referred to as Split Screen) to display two inputs at once.

The LG 29UM68 uses has great viewing angles, both vertically and horizontally. Color shifting (distortion of colors when viewed at a wide angle) doesn't occur.

The monitor doesn't allow any light of the backlight to get through, which results in no noticeable backlight bleeding: that means dark areas remain dark as intended.

The LG 29UM68 is relatively inexpensive compared to other 21:9 displays and is a great budget choice if you're specifically looking for an ultra-wide display.

The LG 29UM68 is a display with a rather unique 21:9 aspect ratio, which is ultra-wide. The difference with a regular 16:9 display is that there are added pixels on both sides, which increases workspace. It's also ideal to watch movies as most recent movies are filmed in a widescreen aspect ratio. Some games also offer support for 21:9 monitors and will allow you to have a greater field of view.

The IPS-panel used in LG's monitor offers great image quality, especially compared to the more common TN-panels. Contrast is great with a 1000:1 ratio (better blacks), luminosity is excellent, images are vibrant and the color reproduction is great as well. These attributes are all due to the fact that an IPS panel was used.

You'll not need to spend time calibrating this monitor because its out-of-the-box color accuracy and gamma tracking are high enough. The monitor's average color inaccuracy dE measures at only around 2.12 - too insignifficant to be spotted by a human eye.

You'll be hard pressed trying to find a cheaper 27-inch 4K monitor that offers the functionality and the high picture quality of the 27UD58-B. In this price bracket, the most common 4K options are usually armed with the old-fashioned TN panels that don't look as good as an IPS panel of the LG 27UD58-B.