Our Verdict
The UJ6300 is an average TV for a mixed usage. It has passable picture quality and a decent viewing angle, but it doesn't get very bright in SDR. Input lag is amongst the lowest though.
- Very low input lag
- Low motion blur
- Not very bright
- Blacks aren't uniform
- Uses less accurate RGBW pixel structure
Subpar choice for movies in a dark room. The UJ6300's blacks are not very deep and lack uniformity, causing black letterboxes and darker scenes to often look blotchy. It also lacks a local dimming feature to help control these issues.
The UJ6300's TV shows performance leaves much to be desired. It isn't bright enough to be used in a bright setting, and the screen finish's handling of reflection isn't great either.
Decent TV for sports watching. Since picture quality is retained better than average from the side, it makes the UJ6300 quite suitable for game viewing parties with a lot of guests. The uniformity of grays and colors is also decently good. Unfortunately, it doesn't get very bright, which might be an issue for afternoon games in a bright living room.
The UJ6300 provides a satisfactory experience with video games. It has low motion blur, which makes fast motion crisp and clear, and its input lag is some of the lowest available, so it feels very responsive.
Passable HDR performance. The UJ6300's brightness is a bit better in HDR than SDR, but it still isn't great. The lack of local dimming and wide color gamut limits its abilities further.
Good HDR gaming performance. While the HDR effect isn't very strong, the input lag and overall gaming experience remain good even in HDR.
Decent PC monitor. The UJ6300 has very low input lag and motion blur, so desktop use is responsive and isn't distracting. The viewing angle is also wide enough for use from up close. However, it cannot get very bright and its RGBW pixel structure can cause fine items on-screen to not look very sharp.
Changelog
- Updated May 08, 2018: 1440p @ 60Hz is not a supported input. It was mistakenly tested as supported, but has now been retested and found to be not supported. It is unlikely a firmware update caused this change. The score has been updated.
- Updated Mar 12, 2018: Converted to Test Bench 1.2.
- Updated Sep 04, 2017: 4:4:4 color is now properly shown in HDR content when in PC mode, as of webOS update 3.6.
- Updated Aug 31, 2017: Retested color gamut and color volume before the start of the 20/7 OLED burn-in test, on software version '3.60.03'. Both are worse than originally tested. Scores and images have been updated.
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Differences Between Sizes And Variants
We tested the 43" (43UJ6300). For the most part, we expect our review to be valid for the 49" (49UJ6300), 55" (55UJ6300) and 65" (65UJ6300).
If someone comes across a different type of panel or if their LG UJ6300 doesn't correspond to our review, let us know and we will update the review.
We have received reports that the 49 inch 49UJ6500, 55 inch 55UJ6540, and 65 inch 65UJ6540 support a wide color gamut, and so perform more similarly to the UH6550. Although we haven't reviewed these models, we do expect our recommendations for the UH6550 to apply.
| Size | Model | UK |
| 43" | 43UJ6300 | 43UJ630V |
| 49" | 49UJ6300 | 49UJ630V |
| 55" | 55UJ6300 | 55UJ630V |
| 60" | N/A | 60UJ630V |
| 65" | 65UJ6300 | 65UJ630V |
A few retailers sell variants of the UJ6300 with a slightly different name. The 49 inch 49UJ6200 and 43 inch 43UJ200 can be found at Walmart and Bestbuy.
We expect all of these variants to perform the same as the model we've reviewed, with the different name being a way to stop price matching across stores.
Popular TV Comparisons
The UJ6300 is a run-of-the-mill entry level "4k" TV, but it doesn't offer great value compared to the competition it faces in its price bracket. Most of the time, it isn't the best choice. See our recommendations for the best budget TVs and the best smart TVs.
The LG UK6300 is slightly better than the LG UJ6300. The LG UK6300 is better for watching TV shows and sports as it can get a little brighter, whereas the LG UJ6300 has a marginally better native contrast ratio that gives it better blacks in dark rooms.
The Vizio E Series 2017 4k TV is a bit better than the LG UJ6300 for most people, unless you have a wide viewing area. The E Series (except for the 55") has a VA type panel, which has a much better native contrast ratio and black uniformity, which make for a better dark room viewing experience than the IPS type panel of the UJ7700. The LG UJ7700 has a wider viewing angle than the E Series and has lower input lag, making it a bit better for gamers.
The LG UJ7700 is better than the LG UJ6300. Unfortunately, the UJ6300 has issues with temporary image retention and static images can remain visible on the screen for a few minutes after they have been removed. The UJ7700 does not have this issue. The UJ7700 also has an extra HDMI port compared to the UJ6300. Both TVs use a slightly less accurate sub-pixel structure which may bother some people for PC use.
The TCL S Series/S405 4k 2018 is better than the LG UJ6300. The TCL S405 has a VA panel with a higher contrast ratio and better black uniformity, which makes it a better choice if you watch movies in a dark room while sitting directly in front. However, for a large room with a wide seating arrangement, the LG UJ6300 is a better choice, as it has better viewing angles due to its IPS panel. It can also handle reflections slightly better. The LG UJ6300 has a lower input lag, which is important if you play games or use the TV as a PC monitor, whereas the TCL S405 has a faster response time that leaves a smaller blur trail when you watch fast-action sports.
We buy and test dozens of TVs yearly, taking an objective, data-driven approach to deliver results you can trust. Our testing process is complex, with hundreds of individual tests that take over a week to complete. Most of our tests use specially designed test patterns that mimic real content, but we also use the same sources you have at home to ensure our results match the real-world experience. We use two main tools for our testing: a Colorimetry Research CR-100 colorimeter and a CR-250 spectroradiometer.
Test Results
Older Test Bench: This product has been tested using an older TV test methodology, before a major update. Some of the test results below aren't directly comparable with other TVs. Learn more
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