Comparison
LK830ST vs ZH450ST
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A side-by-side look at how the BenQ LK830ST and Optoma ZH450ST compare on specs, accuracy, room requirements, and price. No hype — just the parts of the decision a buyer actually weighs.
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Buy LK830ST
Prices confirmed Nov 10, 2026 · we check every retailer daily
Buy ZH450ST
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 | LK830ST | ZH450ST |
|---|---|---|
| Resolution | 4K UHD (3840×2160) | 1080p (1920×1080) |
| Lumens | 4,000 ANSI | 4,200 (standard not stated) |
| Picture Mode | Golf picture mode | — |
- ResolutionLK830ST4K UHD (3840×2160)ZH450ST1080p (1920×1080)
- LumensLK830ST4,000 ANSIZH450ST4,200 (standard not stated)
- Picture ModeLK830STGolf picture modeZH450ST—
Hardware
| Spec | LK830ST | ZH450ST |
|---|---|---|
| Light Source | Laser (20,000 hours normal, 30,000 eco) | Laser (30,000 hours) |
| Throw Ratio | 0.496:1 (fixed) | 0.496:1 (fixed) |
| Offset | 114%; no lens shift | 116% (manual: 115% for the networked model, ±5%); no lens shift |
| Dimensions | 10.99 × 9.03 × 4.74 in (W × D × H) | 10.79 × 8.5 × 4.49 in (W × D × H) |
- Light SourceLK830STLaser (20,000 hours normal, 30,000 eco)ZH450STLaser (30,000 hours)
- Throw RatioLK830ST0.496:1 (fixed)ZH450ST0.496:1 (fixed)
- OffsetLK830ST114%; no lens shiftZH450ST116% (manual: 115% for the networked model, ±5%); no lens shift
- DimensionsLK830ST10.99 × 9.03 × 4.74 in (W × D × H)ZH450ST10.79 × 8.5 × 4.49 in (W × D × H)
Requirements
| Spec | LK830ST | ZH450ST |
|---|---|---|
| Throw Distance | 100 in at about 3.6 ft (BenQ's manual) | 100 in at about 3.6 ft (Optoma's manual) |
- Throw DistanceLK830ST100 in at about 3.6 ft (BenQ's manual)ZH450ST100 in at about 3.6 ft (Optoma's manual)
Performance
| Spec | LK830ST | ZH450ST |
|---|---|---|
| Input Lag | 16.7 ms at 4K/60Hz; 8.3 ms at 1080p/120Hz; 4.2 ms at 1080p/240Hz (BenQ) | — |
- Input LagLK830ST16.7 ms at 4K/60Hz; 8.3 ms at 1080p/120Hz; 4.2 ms at 1080p/240Hz (BenQ)ZH450ST—
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