Our take
The Optoma EH412ST combines native Full HD with an ANSI-labeled brightness rating and a short-throw lens for smaller meeting rooms or classrooms. Its 0.49:1 ratio can place a large image from much less distance than a conventional projector, though it is not an ultra-short-throw model. HDMI and VGA support external sources, and the built-in 10 W speaker may suit a small room. Fixed optics and a lamp make careful alignment and used-unit checks important.
A small classroom or meeting room needing a detailed Full HD image from a short but measured distance.
It is not a fit for wall-adjacent UST placement, optical lens shift, built-in streaming, battery operation, or a permanent installation where the fixed lens cannot match the measured screen position.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Optoma specifies native 1920 × 1080 DLP rather than only accepting a Full HD input.
- The 4,000 ANSI-lumen rating gives a named brightness basis for comparison.
- A 0.49:1 short-throw ratio reduces the room depth needed for a large image.
What to weigh up
- The fixed lens has no optical zoom or lens shift, so placement must be measured carefully.
- Short throw is not the same as ultra-short throw; the projector still needs measurable distance.
- The 240 W lamp's present hours and output depend on the exact used unit.
Specifications and exact model details
The key details
| Model covered | EH412ST |
|---|---|
| Image format | Native Full HD 1920 × 1080 DLP |
| Rated light output | 4,000 ANSI lumens |
| Placement | 0.49:1 short throw with fixed lens; no optical lens shift |
Performance figures are manufacturer claims. Source checked October 15, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Does native Full HD fit the content?
Optoma lists a native 1920 × 1080 DLP device in a widescreen 16:9 format. That provides more pixel detail than WXGA or XGA for film, fine presentation text, and game interfaces at the same screen size. It also avoids interpreting an accepted 4K signal as native 4K; the EH412ST is Full HD. Match the image to the source and viewing distance, since resolution alone does not make every room look sharp. Its computer and video compatibility includes higher input formats, but the projected panel remains 1080p.
How does its short throw change the room?
The 0.49:1 fixed lens is the model's main room-fit feature. Optoma describes a 100-inch image from just over a metre, which can reduce shadows and free space behind a table in a small meeting room. It still needs a measured distance and is not an ultra-short-throw projector that sits within inches of the screen. Because the lens has no optical zoom or shift, screen width and lens position must be planned before mounting. Make sure the chassis can sit square and leave room for the presenter, cables, and exhaust.
What can 4,000 ANSI lumens support?
Optoma's specification sheet labels the EH412ST at 4,000 ANSI lumens. That rating supplies a comparable method for a buyer who needs a bright presentation projector, while room lighting and image size still determine the actual viewing experience. The figure does not guarantee outdoor use or unchanged output from a used lamp. Request lamp hours and a live picture at the intended screen width. Keep the ANSI label distinct from projectors that list 4,000 or 5,000 lumens without stating the measurement method.
Can it replace the current connection chain?
The model sheet lists HDMI 2.0, HDMI 1.4a, VGA, audio, USB power, and RS-232. This can connect a laptop, disc player, or other external video source, and the 10 W speaker may cover a small room. It is not documented as a streaming projector, so include the media device and any network access separately. The fixed lens means that signal planning and physical installation are linked: the source can be correct while the image still misses the screen if the projector is offset. Test all required inputs on the exact unit.
What maintenance and compatibility checks matter?
Optoma specifies a 240 W lamp with life estimates that vary by mode. A used projector may have a different lamp history, and its current output cannot be inferred from the original product sheet. Ask for the counter and replacement history, then inspect focus, color uniformity, fan noise, ports, and remote. The EH412ST accepts some UHD signals and supports 3D formats, but those facts do not change native Full HD or imply glasses are included. Check the source timing and accessories required for the exact use rather than relying on a broad '4K compatible' label.
Who should choose the EH412ST?
Choose it when a small room needs native Full HD and a short measured throw, and the fixed lens can be placed exactly where the screen geometry requires. A standard-throw projector offers more distance flexibility, while a UST model is needed if the unit must sit extremely close to the wall. Buyers who need a built-in app platform should add an external source or compare a smart model. This assessment follows Optoma's model page and specification sheet; it makes no claim about an individual used projector, current offer, or hands-on performance.
Compare for your needs
For native WXGA short throw in a home gaming role, compare Optoma GT700; for a standard-throw meeting setup with zoom, compare Optoma W303.
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Before you buy
Is the EH412ST native 4K?
No. Optoma specifies native Full HD 1920 × 1080; it can accept some higher-resolution signals.
How close can it sit for a 100-inch image?
Optoma says just over a metre; check the model chart and your actual lens position.
Does it have lens shift?
No optical lens shift is listed for the EH412ST; its fixed lens makes careful placement essential.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Optoma EH412ST short-throw product page ↗ — checked October 15, 2026.
- Optoma Australia EH412ST product page ↗ — checked October 15, 2026.
- Optoma EH412ST official specification sheet ↗ — checked October 15, 2026.
The decision
The EH412ST is a strong room-depth option when Full HD detail and a named ANSI rating matter. Its fixed lens leaves little room for placement mistakes.
Is it the right fit?
Check the exact model and today’s offers on Amazon.