ViewSonic PX704HD

Feature	Model 1 (3000 lm / 0.49 TR)	Model 2 (3800 lm / 1.55–1.70 TR)	Model 3 (3000 lm / 1.55–1.70 TR)	Model 4 (3500 lm / Lamp)	Model 5 (1080p / Short Throw)
Native Resolution	1280×800 (WXGA)	1280×800 (WXGA)	1280×800 (WXGA)	1280×800 (WXGA)	1920×1080 (Full HD)
Brightness (ANSI Lumens)	3000	3800	3000	3500	3000
Contrast Ratio	3,000,000:1	3,000,000:1	3,000,000:1	22,000:1	22,000:1
Light Source	LED	LED	LED	Lamp (200W)	Lamp (240W)
Light Source Life	30,000 hrs	30,000 hrs	30,000 hrs	5000 / 15000 hrs	4000 / 15000 hrs
Throw Ratio	0.49	1.55–1.70	1.55–1.70	1.55–1.70	0.69–0.83
Zoom	Fixed, Digital 0.8x–2.0x	Optical 1.1x, Digital	Optical 1.1x, Digital	Optical 1.1x	Optical 1.2x
Keystone	H: ±40°, V: +36°/-40°	±40° (V)	±40° (V)	±40° (V)	±20° (V)
Speaker	2W	2W	2W	2W	5W Cube
Inputs	HDMI, Audio-in, USB-A	HDMI, Audio-in, PC-in	HDMI, Audio-in	HDMI, Composite, Audio-in	HDMI x2, Composite, USB-C
Weight	2.45 kg	2.65 kg	2.45 kg	2.2 kg	2.7 kg
Power (Normal)	157W	240W	156W	260W	310W

Optoma ML1050ST+

High brightness with 1000 lumens – LED light source, long life to 30,000 hours
Short throw lens with auto focus
Feature packed – Built in media player, optional wireless, HDMI, MHL, micoSD and built in speaker,
Ultra compact and lightweight – only 420g

Bright 3,800 Lumens, lights on viewing, vibrant in all conditions
4K Signal Compatible, capable to accept native 4K signals – Stunning HDR performance (HDR10 compatible)
Dual HDMI ports with HDCP2.2 support
Enhanced Gaming Mode for superb gaming experience