Comparison
ZH450ST vs ZH451ST
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A side-by-side look at how the Optoma ZH450ST 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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More comparisons with the ZH450ST and ZH451ST
Buy ZH450ST
Prices confirmed Nov 10, 2026 · we check every retailer daily
Buy ZH451ST
Prices confirmed Nov 10, 2026 · we check every retailer daily
When you buy through links on Northcourse, we may earn a commission at no additional cost to you. Read the full affiliate disclosure
Full specificationsEvery spec for both, line by line
Specifications
The numbers, lined up.
Image
| Spec | ZH450ST | ZH451ST |
|---|---|---|
| Resolution | 1080p (1920×1080) | 1080p (1920×1080) |
| Lumens | 4,200 (standard not stated) | 4,200 (ISO 21118) |
- ResolutionZH450ST1080p (1920×1080)ZH451ST1080p (1920×1080)
- LumensZH450ST4,200 (standard not stated)ZH451ST4,200 (ISO 21118)
Hardware
| Spec | ZH450ST | ZH451ST |
|---|---|---|
| Light Source | Laser (30,000 hours) | Laser (30,000 hours) |
| Throw Ratio | 0.496:1 (fixed) | 0.496:1 (fixed) |
| Offset | 116% (manual: 115% for the networked model, ±5%); no lens shift | 116% (±5%); no lens shift |
| Dimensions | 10.79 × 8.5 × 4.49 in (W × D × H) | 10.79 × 8.5 × 4.49 in (W × D × H) |
- Light SourceZH450STLaser (30,000 hours)ZH451STLaser (30,000 hours)
- Throw RatioZH450ST0.496:1 (fixed)ZH451ST0.496:1 (fixed)
- OffsetZH450ST116% (manual: 115% for the networked model, ±5%); no lens shiftZH451ST116% (±5%); no lens shift
- DimensionsZH450ST10.79 × 8.5 × 4.49 in (W × D × H)ZH451ST10.79 × 8.5 × 4.49 in (W × D × H)
Requirements
| Spec | ZH450ST | ZH451ST |
|---|---|---|
| Throw Distance | 100 in at about 3.6 ft (Optoma's manual) | 100 in at about 3.6 ft (Optoma's manual) |
- Throw DistanceZH450ST100 in at about 3.6 ft (Optoma's manual)ZH451ST100 in at about 3.6 ft (Optoma's manual)
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