Page 38 - 2022-08-01 Sound & Vision

test report
LG 65G2PUA OLED ULTRA HDTV
Test Bench
For the control settings used here go to soundandvision.com. The
measurements were made using CalMAN measurement software
from Portrait Displays, together with X-Rite i1Pro3 Plus and
Klein’s K-10A color meters and a Fresco 6-G pattern generator
from Murideo.
SDR/HD
FULL-ON/FULL-OFF CONTRAST
RATIO: Unmeasurable
In the Filmmaker Picture Mode,
with the OLED Pixel Brightness
at 80, Adjust Contrast at 85,
Auto Dynamic Contrast and
Peak Brightness Off, Gamma at
2.4, and Black Level at 51, the
peak white level was 70.1 foot-
Lamberts (240 nits) and the
black level 0.000 foot-Lamberts,
rendering the full-on/full-off
contrast ratio unmeasurable.
With no changes to the
set’s out-of-the-box White
Balance controls (all in their
zero default settings), the
Filmmaker mode’s grayscale
Delta E values ranged from
a low of 0.39 at 30% to a
high of 1.57 at 90%. The pre-
calibration color Fine Tune
Delta E values ranged from a
high of 2.2 in red to a low of
0.30 in blue. Both the White
Balance and Color Fine Tune
out-of-the-box numbers above
were remarkable, and required
no adjustments to any of
the calibration controls—the
results were already first-rate.
A Rec.709 Saturation Sweep,
analyzing all primary and
secondary colors at saturation
levels from 20% to 100%,
produced excellent results
with all Delta E values below
2.2. On a color checker test,
which samples dozens of real
world colors for accuracy, the
maximum Delta E was 3.0
and the average 1.2. The G2
had excellent uniformity on a
game-centric features such as
FreeSync Premium, VRR (Variable
Refresh Rate), and ALLM (Auto Low
Latency Mode). A Game Optimizer
[
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38 August September 2022
full field white pattern, with
no obvious sign of the “dirty
screen effect.”
Delta E is a figure of
merit that indicates how
closely a display adheres to
the color standard. Experts
generally agree that at levels
below 3.0-4.0 (most argue
for 3.0) the result is visibly
indistinguishable from perfect
tracking. Delta E values may
be used to characterize the
accuracy of either white
balance (grayscale), or color.
HDR10
FULL-ON/FULL-OFF CONTRAST
RATIO: Unmeasurable
In the HDR10 Filmmaker
Picture Mode, with OLED
Peak Brightness at 100,
Adjust Contrast at 100,
Screen Brightness at 50,
Auto Dynamic Contrast
Off, HDR Tone Mapping Off
(turned back on in normal use
following calibration), and
Peak Brightness set to High,
the peak brightness was 925
nits and the black level 0.000
nits. The LG G1 we measured
last year, under roughly the
same conditions, produced
744.5 nits. That makes this
year’s G2, with its upgraded
evo panel and new heat sink,
180.5 nits brighter for an
increase of 24%. The HDR
black level measured 0.000
nits, making the full-on/full-off
contrast ratio unmeasurable.
In these settings, the HDR
EOTF (Electro Optical Transfer
also puts all of your game controls
and se ings in one place for quick
reference. Using the 1080p Bodnar
meter I measured input lags of
soundandvision.com
Function—roughly the gamma white levels, with luminance
for HDR) was a nearly perfect windows of varying sizes,
match to an ideal result. measured 925 nits from 1% to
Before calibration the 10%, 400 nits at 25%, 275 nits
grayscale Delta E’s ranged at 50%, and 170 nits at 100%.
from a low of 0.25 at 20% to a On an HDR Color Checker
high of 1.25 at 60%. test (sampling a wide range
Before calibration the of real colors and not just the
maximum Color Delta E (at primaries and secondaries),
50% stimulation) was 2.7 in the G2 averaged a Delta E
red and a minimum 0.7 in of 1.28 (1.97 maximum) with
blue. As with the SDR results, luminance included and 0.93
no adjustments to the color (1.99 max) without luminance.
calibration controls were P3 and BT.709 saturation
needed to achieve these sweeps inside BT.2020 ranged
results. I have some thoughts from good to very good.
as to how or why our G2 was The LG G2 measured 74.6%
so pristine out of the box in coverage of BT.2020 color and
both HDR and SDR, but won’t 99.2% of P3 (using the 1976
speculate on that here. But it standard). The P3 result here
does suggest that even if your is close enough to support a
sample isn’t as near-perfect as claim of full P3 coverage. No
ours, it should offer a range of consumer source material
control needed to make it so by as yet exceeds P3, and we
a skilled calibrator. know of no movement in that
The HDR 100% peak direction.—TJN
DIMENSIONS (WxHxD, inches): 56.7 x 32.3 x 1.0
(without stand), 56.7 x 34.6 x 9.6 (with stand)
Specs WEIGHT (pounds): 50.3 (without stand), 59.5, (with
stand)
VIDEO INPUTS: HDMI 2.1 (4, 1 with eARC), RF
Antenna)
AUDIO OUTPUTS: Optical digital
OTHER: USB 2.0, LAN (Ethernet), RS-232C (mini-jack)
79.9ms in Filmmaker mode and G1, which had a measured input lag
19.7ms in Game mode. The la er is of 12.4ms.
higher than the best we’ve seen on LG includes its wand-like “Magic
other displays, including last year’s Remote” for operating the TV using