LG HU85LA 4K UST Laser Projector Review
A recessed area on the left side of the rear panel includes all the connections for inputs/outputs and power, as well as a Kensington lock slot.
• (2) HDMI 2.0b with HDCP 2.2, one with ARC
• (2) USB 2.0, Type A (for media or smartphone)
• (1) USB Type C (for display, data, power)
• (1) ATSC Digital TV Tuner
• (1) S/PDIF optical audio output
• (1) RJ45 Ethernet (for network and IP control)
Brightness. Due to the extreme angle of light coming off the HU85LA's 0.19 throw ratio lens, traditional ANSI lumen measurements could not be taken reliably into the lens at the screen surface with an ambient light meter. As an alternative, I measured lux directly off the center of my 1.3 gain screen using a Klein K-10a colorimeter at a distance of 2 meters, from which I calcuated lumens based on the 92-inch screen size. The measurements as shown, therefore, reflect an elevated bump from the screen gain and are not averaged against measurements taken from eight other data points on the screen, as is normally reflected in an industry-standard ANSI lumen measurement. They are offered here primarily for comparison among the projector's different color modes and power settings and should not be regarded as verification of the projector's claimed 2,700 ANSI rating.
Switching from the Minimum Energy Saver power mode (the brightest) to the Medium setting resulted in an approximately 30% drop in light output in all color modes. Switching from Minimum to Maximum Energy Saver resulted in an approximately 53%-55% drop in light output. However, changes to the Energy Saver mode also resulted in shifts in color temperature, as shown in the table below.
LG HU85LA Brightness (Lumens)
|Minimum Energy Saver||Medium Energy Saver||Maximum Energy Saver|
|SDR MODES||Lumens||Color Temp (K)||Lumens||Color Temp (K)||Lumens||Color Temp (K)
Input Lag. Unfortunately, due to the extreme angle of light coming off the projector's optics, I was unable to obtain input lag readings with either the 4K or 1080p Bodnar lag meters I had on hand.
Frame Interpolation. The HU85LA's TruMotion frame interpolation feature is available for both 1080p and UHD content with up to 60 Hz frame rate. Three settings (besides off) include Smooth, Clear, and User, with the latter offering up a 10-position De-Judder slider. The Smooth setting did an excellent job of eliminating judder and blur on moving objects and camera pans but imparted noticeable video effect to 24-frame native content, even when it was played at 60 Hz from a UHD disc player. The Clear setting provided a much better compromise, definitely smoothing the motion but imparting only modest soap opera effect. The User setting was also effective and was best used in it lower settings; at 5 and above the video effect became too distracting on film-based content.
Fan Noise. The HU85LA is extremely quiet. LG rates the fan noise at 26 dB(A) at the lowest Energy Saving setting (Maximum) and at 30 dB(A) at its loudest. The fan is barely audible when the projector comes on in a quiet room and has a fairly low pitch that makes it difficult to detect from any reasonable seating distance. High Altitude mode is recommended above 1,200 meters (3,937 feet). Activating it with even the Minimum Energy Saving setting adds a barely perceptible increase in noise and should not present any issues in most environments.
|Review Contents:||Introduction, Features||Performance, Conclusion||Measurements, Connections|
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