Optoma Photon Beam PK53 DLP UHD 4K vs ViewSonic LSD400HD-ST

What Photon Beam PK53 DLP UHD 4K does better (3) and where LSD400HD-ST wins (4) — every spec side by side.

3 advantages≈ US$1,550

ViewSonic · 2025LSD400HD-ST

6.7Score

4 advantages≈ US$1,450

Higher score

8.5Picture6.1

Why is Photon Beam PK53 DLP UHD 4K better than LSD400HD-ST?

Specifications

Only differences	Optoma Photon Beam PK53 DLP UHD 4K≈ US$1,550	ViewSonic LSD400HD-ST≈ US$1,4506.7
Picture
Resolution (on screen)	3840 × 2160 (4K UHD)	1920 × 1080 (Full HD)
Native panel resolution	1920 × 1080 (Full HD)	1920 × 1080 (Full HD)
4K method	4K by pixel shifting	—
Display technology	DLP	DLP
Light source	Laser	Laser
Brightness (ANSI / ISO lumens)	4,100 lm	4,000 lm
Contrast ratio (dynamic / claimed)	500,000:1	300,000:1
HDR support	No	—
Gaming
Game / low-latency mode	Yes	—
Lens & placement
Throw ratio	1.6:1	—
Throw type	Standard throw (1.0:1 and longer)	—
Distance for a 100″ 16:9 image	3.54 m	—
Largest image size	—	300″
Keystone correction	—	Yes
Automatic keystone correction	—	No
Smart & streaming
Smart platform	Android (not TV-certified)	—
Built-in smart platform	Yes	—
Connectivity
HDMI inputs	1	2
USB port	Yes	Yes
Ethernet (LAN)	No	Yes
VGA input	No	No
Audio output	No	Yes
Battery, power & lifetime
Light source life	3,000 h	20,000 h
Light source life (eco mode)	—	30,000 h
Design & noise
Fan noise	—	32 dB
Fan noise (eco mode)	—	27 dB
Weight	—	3.1 kg
Width	—	286 mm
Height	—	129 mm
Depth	—	216 mm
Colours	Black	White