Optoma Photon Life PH31 vs Optoma Photon Life PK31

Bold marks the better figure where both are stated to the same standard. “—” means the manufacturer doesn't state it.

	Optoma Photon Life PH31	Optoma Photon Life PK31 MSRP $1,099
Display system
Imaging technology	DLP	DLP
Technology brand	DLP	—
Chip / panel diagonal	—	0.47 in
Native aspect ratio	16:9	16:9
Native resolution	1920 × 1080	1920 × 1080
Addressable resolution	—	3840 × 2160
Optics
Throw ratio	1.5–1.65:1	1.5–1.65:1
Projection distance table	60″: 1.99–2.19 m · 70″: 2.32–2.56 m · 80″: 2.66–2.92 m · 90″: 2.99–3.29 m · 100″: 3.32–3.65 m · 110″: 3.65–4.02 m · 120″: 3.99–4.38 m · 130″: 4.32–4.75 m · 140″: 4.65–5.11 m · 150″: 4.98–5.48 m	60″: 1.99–2.19 m · 80″: 2.66–2.92 m · 100″: 3.32–3.65 m · 120″: 3.99–4.38 m · 150″: 4.98–5.48 m
Zoom type	Optical	Optical
Zoom ratio	1.1×	1.1×
Focus	Manual	Manual
Vertical lens shift	0%	—
Horizontal lens shift	0%	—
Fixed offset	105%	105%
Focal length	15.84–17.45 mm	15.84–17.45 mm
F-number	2–2.05	2–2.05
Image size range	60–150 in	60–150 in
Vertical keystone	—	-40–40°
Horizontal keystone	—	-40–40°
Corner / warp correction	—	Warp
Light source
Light source type	LED	LED
Light source detail	RGB LED	RGB LED
Light source life	Eco: 30,000 h	Eco: 30,000 h
Brightness
ISO light output	1,500 lm	900 lm
Claimed brightness (non-standard)	2,700	—
Claimed brightness unit	Unspecified	—
Brightness uniformity (centre-to-corner)	90%	90%
Contrast & black level
Dynamic contrast	250,000:1	200,000:1
Colour
DCI-P3 gamut	95%	95%
Bit depth / 'number of colours'	30 bitDerived	30 bit
Calibration & picture control
Picture mode memories	—	3
HDR
HDR formats	—	HDR10, HLG
Motion & gaming
Max refresh rate	—	1920×1080: 240 Hz · 3840×2160: 60 Hz
Input lag (rated)	—	3840×2160 @ 60 Hz: 16 ms · 1920×1080 @ 60 Hz: 16 ms · 1920×1080 @ 120 Hz: 8 ms · 1920×1080 @ 240 Hz: 4.6 ms
Audio
Speaker power	5 W	5 W
Speaker count	1	1
Audio outputs	3.5 mm	3.5 mm
Bluetooth audio out	—	No
Inputs, control & connectivity
Max input signal	3840 × 2160	3840 × 2160
HDMI port count	1	1
HDMI ports (feature-level)	HDMI: HDMI 1.4a	HDMI: HDMI 2.0
Horizontal scan frequency	15–102 kHz	15–255 kHz
Vertical scan frequency	23–76 Hz	23–240 Hz
LAN control	No	No
Wi-Fi	—	None
Firmware / software
Smart OS	—	None
3D
3D support	No	—
Setup automation
Auto keystone	Yes	—
Acoustic noise
Fan noise (sound pressure)	Eco: 26 dB(A) · Bright: 32 dB(A)	Eco: 26 dB(A) · Bright: 32 dB(A)
Environment & power
Operating temperature	0–40°C	0–40°C
Operating humidity	0–80%RH	—
Altitude / high-altitude mode	3,048 m	3,048 m
High-altitude mode	Yes	Yes
Operating orientations	Table, Ceiling, Rear	Table, Ceiling, Rear
Rated voltage	100–240 V	100–240 V
Rated frequency	50–60 Hz	50–60 Hz
Power consumption (max)	140 W	110 W
Power consumption by mode	Eco: 69 W · Bright: 123 W	Eco typical: 55 W · Bright typical: 86 W
Standby power	0.5 W	0.5 W
Power supply	External brick	External brick
Physical & installation
Width	238 mm	238 mm
Depth	215 mm	215 mm
Height	118 mm	118 mm
Weight	2.2 kg	2.2 kg
Tripod socket	—	Yes
Safety & compliance
Photobiological risk group	RG2	RG2
Safety & market certifications	FCC	FCC
Support & ownership
Warranty	—	🇺🇸 US 1 yr
User manual	https://region-resource.optoma.com/products/documents/WINyiDkIEYScPG4qOJ28rGKbFRWFZSzawTYvHHSY.pdf	https://region-resource.optoma.com/products/documents/gd5s39XIvjRwwGTvf9nC00Dh4xpLDBTrjLLA96Ro.pdf
In the box
Box contents	Power adapter, Remote, Batteries, Manual, Quick start guide	Power adapter, Remote, Batteries, User manual
Remote type	IR	IR