Products: Optoma ZH340ST, Optoma ZH406STx, Optoma EH412STx. Keywords: Choose,Short Throw, Laser

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Introduce​

Parameter	Optoma ZH340ST​	Optoma ZH406STx​	Optoma EH412STx​
Picture​	​	​	​
Price​	$1249​	$1689​	$1579​
Recommended Uses​	Education, Business​	Business​	Gaming​
Highlight​	Model: ZH340ST Type: Compact projector Brightness: 3,200 lumens Light Source: DuraCore laser Lamp Life: Up to 30,000 hours Dust Resistance: IPX6 Projection Distance: 4' 4" for 120" image Input Connectors: Dual HDMI, USB Dimensions: 8.5" x 10.8" Power Consumption: 45% of typical lamp-based projectors Usage: Professional offices, classrooms Maintenance: Low maintenance, no lamp/filter replacements needed​	Laser Light Source: DuraCore, 30,000 hours lifespan, IPX6 dust resistance Input Resolution: 4K HDR (HDR10 & HLG) Throw Type: Short throw, 120" image from 4' 4" distance Picture Quality: 1920x1080 resolution, 300,000:1 contrast ratio, 4,200 Lumens brightness Zoom and Correction: 0.8 – 2.0x digital zoom, four corner correction​	Short Throw Lens: Projects 120" image from 4.5 feet away, ideal for small spaces. High Brightness: 4,000 Lumens suitable for well-lit environments. 4K HDR Input: Supports vibrant colors, brighter whites, deeper blacks, and sharper images with 4K HDR sources. Vivid Color: 50,000:1 contrast ratio and Rec. 709 color support for accurate color reproduction. Extensive Connectivity Options: Includes 2 x HDMI, RS232, and USB-A ports.​

Side-by-Side Comparison​

Display​

Parameter	Optoma ZH340ST​	Optoma ZH406STx​	Optoma EH412STx​
Screen Size​	30 Inches - 300 Inches​	1080 Hz - 1080 Inches​	36.2 Inches - 316 Inches​
Throw Distance​	0.3 Meters - 3.3 Meters​	0.5 Meters - 1 Meters​	1.3 Feet - 11.3 Feet​
Contrast Ratio​	300000:1​	16:9​	50, 000: 1​
Display Resolution​	1920 x 1080 Pixels​	1080 Hz​	480p, 720p, 1080i, 1080p, 480i, 525i, 525p, 625p, 625i, 576i, 576p​
Native Resolution​	1920 x 1080​	1920 x 1080​	1920 x 1080​
Brightness​	3200 Lumen​	4200 Lumen​	4000 Lumen​
Display Type​	Laser​	LCD​	LCD​
Picture Quality Enhancement​	-​	-​	-​

Features​

Parameter	Optoma ZH340ST​	Optoma ZH406STx​	Optoma EH412STx​
Video Encoding​	-​	-​	-​
Lamp Wattage​	-​	125 Watts​	125 Watts​
Light Source Life​	30000 Hours​	30000 Hours​	15000 Hours​
Controller Type​	Remote Control​	Button Control​	Button Control​
Control Method​	Remote​	Touch​	Touch​
Mount Type​	Tabletop Mount​	Ceiling Mount​	Ceiling Mount​
Noteworthy Features​	Low Power Consumption, DuraCore Laser Technology, Full HD 1080P Resolution, Compact Size, Short Throw​	Short Throw​	Short Throw​

Connectivity​

Parameter	Optoma ZH340ST​	Optoma ZH406STx​	Optoma EH412STx​
Connectivity Technology​	USB, HDMI​	HDMI​	2 x HDMI, RS232, and USB-A​
Hardware Connectivity​	USB, HDMI, 3.5mm Audio​	HDMI​	USB, HDMI​
Compatible Devices​	Laptop, Mac Computer, Ultra Mobile, Tablet, Smartphone​	-​	-​

Measurements​

Parameter	Optoma ZH340ST​	Optoma ZH406STx​	Optoma EH412STx​
Dimensions L x W x H​	-​	10.5"L x 13.26"W x 4.25"H​	-​
Item Weight​	6.61 Pounds​	9.9 Pounds​	7.43 Pounds​

Conclusion​

Product	PROS AND CONS​
Optoma ZH340ST​	Pros: • Excellent color quality with vibrant and rich visuals • Fairly quiet operation, especially when mounted high • Good sharpness at a reasonable viewing distance (7.5 feet from a 135-inch screen) • Laser technology offers advantages over lamp projectors, such as no warm-up time and quieter performance • Versatile setup with compatibility for streaming devices and live TV • High brightness allows for viewing in ambient light conditions Cons: • DLP rainbow effect may be noticeable for some viewers • Not 4K resolution, which may be a consideration for some buyers • Picture quality, while good for the price, is not razor sharp Overall Impression: This projector delivers impressive color and brightness for its price point, making it an excellent choice for home theater enthusiasts who prioritize vibrant visuals and ease of setup. While it may not be 4K and has some minor drawbacks like the DLP rainbow effect, the advantages of laser technology and its performance in various lighting conditions make it a worthy investment for casual movie watchers and families.
Optoma ZH406STx​	Pros: • Easy setup - can be operational in under 10 minutes. • Brightness - performs well in lit rooms, suitable for daytime use. • Versatile picture size/range - accommodates various environments with adjustable sizes. • User-friendly remote control and menu options. • Improved sound quality through stereo pass-thru compared to older models. • Fits well in existing mounts and spaces, no bulb replacement needed due to laser technology. Cons: • Color and brightness uniformity issues - noticeable blue hue and hotspots on the screen. • Limited left/right screen shift capability, affecting picture alignment. • Not a short throw projector, which may limit some installation options. • Potentially disappointing for users expecting 4K technology or advanced color accuracy. Overall Impression: The projector is an easy-to-use and bright option for various environments, particularly in well-lit spaces. It offers good versatility in picture size and setup, making it suitable for home entertainment or casual viewing. However, potential buyers should be cautious of color and brightness uniformity issues that may detract from the viewing experience, especially for critical applications like gaming or professional presentations. Overall, it may be a solid choice for general use, but those seeking high-end performance might need to explore other options.
Optoma EH412STx​	Pros • Excellent picture quality, clear and bright even on a large 100" screen outdoors • Good performance in lit environments; blacks appear well • Easy setup and operation • Works well with streaming devices like ROKU for various content • Very good value for the price, especially for outdoor and AV use • Near 4K quality when properly calibrated Cons • LUMENS rating may be overstated; visibility issues during the day on larger screens • Occasional functionality issues reported (e.g., toggle between screens) • Warranty and support communication can be challenging • Some users experienced delays in RMA processing and lack of updates Overall Impression The projector is highly regarded for its performance and value, particularly in outdoor settings and as a media center. While there are some concerns regarding brightness claims and support experiences, many users report satisfaction with the product’s visual quality and ease of use. Overall, it is a recommended choice for those looking for an effective projector for both entertainment and conference setups.