Our take
The InFocus IN138HDST is a source-documented Full HD DLP projector positioned for education, with a short-throw ratio and a UHP lamp. InFocus lists 4000 lumens without an ANSI measurement basis, so this review does not use that number as a comparable ANSI rating. The historical candidate ASIN does not identify a present offer or unit condition.
A classroom or teaching room that needs Full HD and can measure a short-throw mounting position.
It is not a battery projector, a documented built-in streaming system, or an ultra-short-throw model that can sit directly against the screen wall.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- InFocus states native 1920 × 1080 DLP resolution and a 16:9 image format.
- Its 0.499:1 projection factor is shorter than ordinary meeting-room lenses and can reduce required room depth.
- The official page describes an internal HDMI bay for a compatible external stick or computer device.
What to weigh up
- The listed 4000-lumen value has no stated ANSI basis and should not be compared as an ANSI measurement.
- Its 0.499:1 ratio is short throw, not the very close placement of a typical ultra-short-throw model.
- A used UHP lamp's hours, remaining brightness, and replacement history depend on the individual unit.
The key details
| Model covered | IN138HDST |
|---|---|
| Image format | Native 1920 × 1080 DLP, 16:9 |
| Rated light output | 4000 lumens; the source does not label this an ANSI rating |
| Placement | 0.499:1 short throw, UHP lamp, HDMI and network connections |
Performance figures are manufacturer claims. Source checked October 4, 2026. Regional models and included accessories can differ.
What the features mean for you
An education-oriented role with a specific setup
InFocus describes the IN138HDST as a Full HD short-throw projector for a more dynamic educational experience. That gives it a clearer classroom purpose than a general home projector, although the saved product page does not document interactive pen input. The internal HDMI bay is intended for adding a separate computing or streaming device, not evidence of an integrated app platform. This profile describes the model named in InFocus documentation; it does not prove that historical ASIN B07KCKVCR9 is currently sold or that any used package contains the same accessories.
Native Full HD is a real, useful distinction
The specification identifies a 0.65-inch DLP panel with native 1920 × 1080 pixels in a 16:9 format. That supports full-HD classroom video and more fine detail than SVGA or WXGA projectors, though the useful difference depends on image size, seating distance, and source material. A computer can feed other signal formats, but input compatibility is not a substitute for native panel resolution. If a lesson depends on small text or dense diagrams, plan the projected width and viewing distance before choosing this older model. No claims here come from a hands-on image comparison.
Treat 4000 lumens as an unstandardized rating
InFocus lists brightness as 4000 lumens, but its product specification does not call the measurement ANSI lumens. The matcher therefore leaves ANSI output unknown instead of translating or upgrading the figure. This distinction matters when comparing the IN138HDST with models whose maker explicitly identifies ANSI measurement. In a classroom, screen size, projection mode, lamp age, and light falling on the screen all affect the visible image. Confirm lamp hours and inspect a representative projected slide on the exact unit before relying on its condition; the model-level number cannot settle that question.
Short throw helps, but measure the actual ratio
The manufacturer gives a 0.499:1 projection factor and a distance range from approximately 0.4 to 3.4 meters. That is a short-throw arrangement intended to put a large image closer to the screen than a conventional 1.5:1 lens, but it is not the near-wall geometry usually meant by ultra-short throw. Use InFocus's calculator for the specific screen width and installation location. The zoom is digital rather than optical, and the listed lens-shift fields are blank, so plan physical alignment and mount position rather than expecting lens movement to fix an offset.
Plan for a lamp and an external content source
The official product sheet identifies a UHP lamp and an HDMI bay, with additional VGA, video, audio, and network connections. The internal bay can host a separate streaming stick or computer stick, but the projector itself is not documented with an operating system or licensed streaming apps. That leaves service compatibility with the attached device. For a used unit, check the exact input panel, remote, power cord, lamp counter, focus over the full image, color uniformity, and fan noise. These checks are practical buying advice, not results of personal testing or a claim about an available listing.
What else to compare
For a full-HD projector with two-user interactive pens, compare Epson BrightLink 475Wi; for a higher, explicitly ANSI-rated output, compare Vivitek D803W-3D while accepting its lower WXGA resolution.
Before you buy
Is the IN138HDST native 1080p?
Yes. InFocus lists native 1920 × 1080 DLP resolution for the IN138HDST model.
Can I compare its 4000 lumens as ANSI?
No. InFocus lists 4000 lumens but does not identify an ANSI measurement basis on the saved specification page.
Is this an ultra-short-throw projector?
No. InFocus gives a 0.499:1 short-throw ratio, which still requires a measured gap from screen to lens.
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.
- InFocus official IN138HDST specification page ↗ — checked October 4, 2026.
- InFocus official IN138HDST model specifications ↗ — checked October 4, 2026.
The decision
The IN138HDST fits a measured classroom short-throw plan when Full HD matters, but its lumen basis and used-lamp state remain unresolved.
Is it the right fit?
Check the exact model and today’s offers on Amazon.