Comparison
AH30ST vs ZH451ST
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A side-by-side look at how the BenQ AH30ST and Optoma ZH451ST compare on specs, accuracy, room requirements, and price. No hype — just the parts of the decision a buyer actually weighs.
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Prices confirmed Nov 10, 2026 · we check every retailer daily
Buy ZH451ST
Prices confirmed Nov 10, 2026 · we check every retailer daily
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Full specificationsEvery spec for both, line by line
Specifications
The numbers, lined up.
Image
| Spec | AH30ST | ZH451ST |
|---|---|---|
| Resolution | 1080p (1920×1080) | 1080p (1920×1080) |
| Lumens | 3,000 ANSI | 4,200 (ISO 21118) |
- ResolutionAH30ST1080p (1920×1080)ZH451ST1080p (1920×1080)
- LumensAH30ST3,000 ANSIZH451ST4,200 (ISO 21118)
Hardware
| Spec | AH30ST | ZH451ST |
|---|---|---|
| Light Source | 4LED (20,000 hours normal, 30,000 eco) | Laser (30,000 hours) |
| Throw Ratio | 0.69–0.83 (1.2× optical zoom) | 0.496:1 (fixed) |
| Offset | 102.5%; no optical lens shift (the menu's Digital Lens Shift moves the image within the panel) | 116% (±5%); no lens shift |
| Dimensions | 11.95 × 8.69 × 4.23 in (W × D × H) | 10.79 × 8.5 × 4.49 in (W × D × H) |
- Light SourceAH30ST4LED (20,000 hours normal, 30,000 eco)ZH451STLaser (30,000 hours)
- Throw RatioAH30ST0.69–0.83 (1.2× optical zoom)ZH451ST0.496:1 (fixed)
- OffsetAH30ST102.5%; no optical lens shift (the menu's Digital Lens Shift moves the image within the panel)ZH451ST116% (±5%); no lens shift
- DimensionsAH30ST11.95 × 8.69 × 4.23 in (W × D × H)ZH451ST10.79 × 8.5 × 4.49 in (W × D × H)
Requirements
| Spec | AH30ST | ZH451ST |
|---|---|---|
| Throw Distance | 100 in at about 5.0–6.0 ft, from the ratio | 100 in at about 3.6 ft (Optoma's manual) |
- Throw DistanceAH30ST100 in at about 5.0–6.0 ft, from the ratioZH451ST100 in at about 3.6 ft (Optoma's manual)
Performance
| Spec | AH30ST | ZH451ST |
|---|---|---|
| Input Lag | 16.7 ms at 1080p/60Hz (BenQ) | — |
- Input LagAH30ST16.7 ms at 1080p/60Hz (BenQ)ZH451ST—
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