Optoma UHD55 vs Optoma UHD38:What Are the Differences?

Optoma UHD55 and Optoma UHD38 are both 4K projectors, but they have different brightness, contrast ratio, throw ratios, and smart features.

Compared with Optoma UHD38, Optoma UHD55 is better in terms of image contrast, shorter throw ratio, and smart features like voice assistants.


Brand Brand	Optoma Optoma
Brand Model Brand Model	Optoma UHD55 Optoma UHD38
Brightness (ANSI lumens) Brightness (ANSI lumens)	3,600 ANSI lumens 4,000 Lumens
Display Chip Display Chip	0.47" DLP x 1
Display Technology Display Technology	DLP DLP
Standard Resolution Standard Resolution	3480 x 2160 3840x2160
Maximum Supported Resolution Maximum Supported Resolution	3480 x 2160 3840x2160
Image Contrast Ratio Image Contrast Ratio	Dynamic Contrast Ratio: 1,200,000:1 1,000,000:1
Throw Ratio Throw Ratio	1.21:1 - 1.59:1 1.50:1 - 1.66:1 (D:W)
Keystone Correction Keystone Correction	Horizontal & Vertical Horizontal/vertical+/-40°
Lamp Life Lamp Life	4,000 hours / 15,000 hours (Eco) 4,000 hours / 15,000 hours (Eco)
Lamp Type Lamp Type	Metal Halide bulb 240W Metal Halide bulb
Focus technology Focus technology	manual focus manual focus


Product type Product type	Home theater Home theater
Image Size Image Size,projector1	34.03" - 302.22" 33" ~ 300"
Screen ratio Screen ratio	16:9 (4K HD)
Screen color Screen color	10-bit
3D Stereoscopic film is a type of film that was first introduced in Hollywood on May 24, 1953 when stereoscopic films appeared.	Full HD 3D Full HD 3D
Sound System Sound System	10.0 Watts Mono 10.0 Watts Mono
Projection method Projection method	Rear, forward, table, ceiling


I/O Connection Ports Connection Ports	12-Volt Trigger Audio In: Mini Jack Audio Out: Optical HDMI (HDCP 2.2) HDMI 2.0 Network: RJ-45 RS232: DB-9pin USB x 2 VGA In: Dsub-15pin Wireless Networking Inputs 2 x HDMI 2.0, 1 x VGA (YPbPr/RGB), 1 x Audio 3.5mm Outputs 1 x Audio 3.5mm, 1 x S/PDIF, 1 x USB-A power 1.5A Control 1 x RS232, 1 x 12V trigger


Size(HxWxD) Size(HxWxD)	115 x 315 x 254mm 12.4" x 10.63" x 4.65"
Power Usage Power Usage	330 Watts 202W~305W
Noise Level Noise Level	26dB 26dB
Machine weight Machine weight	5.09kg 3.97kg
Accessories Accessories	AC power cord Remote control with CR2025 battery Quick start user manual WUSB wireless adapter AC power cord Remote control 2x AAA batteries Basic user manual
Warranty Warranty	1 Year
other other	Frame Interpolation HDR Amazon Alexa Streaming Apps Google Assistant Input lag: 4K/60: 16.9ms \| 1080p/240: 4ms 4.20ms input lag at 1080P, 16ms at 4K