Our take
The Optoma EH320UST is a presentation projector designed to sit close to a wall or screen. Optoma lists native 1920 × 1080, 4000 ANSI lumens, a 0.25:1 fixed throw, a UHE lamp, two HDMI inputs, and a 16 W speaker. Those facts make it relevant for classrooms and other spaces where conventional projectors cast shadows or need too much room behind the audience. Its close placement is specific, however: the lens has no zoom, so the screen, wall mount, and projector position must be measured carefully. The separate EH320USTi is the interactive model; this standard EH320UST is not given that feature.
Classrooms or venues that require a bright Full HD image close to the screen and can support precise fixed installation.
Do not choose it if you need a battery, optical zoom, an integrated streaming platform, portable table use, or interactive pens on the standard EH320UST model.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Optoma documents native Full HD resolution and 4000 ANSI lumens for EH320UST.
- The fixed 0.25:1 lens can create a large image from close to the screen.
- Dual HDMI, powered USB, network control, and a 16 W speaker suit fixed presentation environments.
What to weigh up
- No zoom means the mount and image size must be planned around the exact wall geometry.
- The 260 W lamp requires mains power and ongoing condition checks on a used projector.
- EH320USTi is the interactive variant; interactive functions must not be assumed on EH320UST.
The key details
| Model covered | EH320UST |
|---|---|
| Image format | Native Full HD 1920 × 1080 |
| Rated light output | 4000 ANSI lumens |
| Placement | 0.25:1 ultra-short throw; fixed lens with no zoom |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
What the features mean for you
Use Full HD for slides and video
Optoma identifies 1920 × 1080 as the EH320UST's native resolution. That is useful for widescreen slides, high-definition video, and clear source interfaces, but it does not guarantee the quality of any particular presentation. Font size, source settings, screen surface, and viewing distance remain important. Confirm the exact model suffix when reviewing a listing: Optoma markets an EH320USTi variant with interactive functions, while the product in this row is EH320UST. Keeping those identities separate prevents an attractive feature from migrating across otherwise similar model names.
Plan around an ANSI-rated 4000 lumens
Optoma's exact-model material specifies 4000 ANSI lumens. That gives a comparable basis for a buyer evaluating larger images or some ambient light, while actual room results still depend on image size, lamp mode, screen, and lamp condition. Brightness does not replace contrast or room control; closing blinds and using a suitable screen may matter as much as a high number. For a used lamp projector, request the exact unit's hours and verify focus, color uniformity, fan operation, and the stated model. The product specification describes a new model rating, not the current output of a used example.
Measure the fixed ultra-short lens
The EH320UST's 0.25:1 throw ratio is an ultra-short-throw design. Optoma's datasheet gives an image and distance range, and the lens has no optical zoom. This can keep the chassis near the wall and reduce shadows, but it makes geometry unforgiving: small changes in height, level, and distance change the projected image. Measure the screen, mount arm, wall surface, and lens position together before installation. Lens shift is listed as absent. Use the correct model chart rather than transferring dimensions from EH320USTi or a different 0.25-ratio projector.
Keep interactive and standard models separate
Optoma's product family includes an interactive EH320USTi, but the row's model is EH320UST. This distinction is a selection criterion: if lessons depend on on-screen pen input, choose only a source-confirmed interactive package with the required hardware and software. The standard EH320UST still has presentation-oriented control connections and can project close to a board, yet proximity alone does not make it interactive. This review keeps pen support false for the non-interactive model rather than assuming the suffix does not matter. Confirm the model plate and included components before ordering a mounting system.
Plan external sources and a fixed power connection
The model's HDMI and VGA inputs, powered USB, network-control connections, and speaker support a fixed external-source setup. They do not establish a built-in streaming-app operating system. If movies or web services are part of the plan, add a compatible external player and verify its power and network access. The projector is lamp-based and intended for a wall-mounted or table installation with AC power; no battery is documented. Check cable paths before closing a wall or mounting arm. Optical alignment and source routing should be part of the same install plan rather than decisions left until the first presentation.
What else to compare
Acer H6517ST uses a 0.5:1 short-throw lens for a home room, while an EH320USTi should be considered only when interactive functionality is required and verified.
Before you buy
What is the EH320UST's native resolution?
Optoma specifies a native Full HD 1920 × 1080 image for the EH320UST.
How bright is the EH320UST by ANSI measurement?
The exact-model Optoma specifications list 4000 ANSI lumens.
Is the standard EH320UST interactive?
No. Optoma identifies EH320USTi as the interactive variant; interactive pens are not attributed to EH320UST.
Can the projector sit close to the screen?
Yes. Optoma lists a fixed 0.25:1 ultra-short-throw ratio, but the no-zoom lens requires careful measurement.
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 & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Optoma EH320UST official datasheet and model specifications ↗ — checked October 5, 2026.
- Optoma USA EH320UST datasheet ↗ — checked October 5, 2026.
- Optoma UK exact-model comparison specifications including EH320UST ↗ — checked October 5, 2026.
- Optoma EH320UST overview and placement example ↗ — checked October 5, 2026.
The decision
EH320UST is a strong layout-specific presentation candidate when its bright fixed ultra-short-throw lens fits a measured installation.
Is it the right fit?
Check the exact model and today’s offers on Amazon.