Comparison
LK830ST vs ZH451ST
When you buy through links on Northcourse, we may earn a commission at no additional cost to you. Read the full affiliate disclosure
A side-by-side look at how the BenQ LK830ST and Optoma ZH451ST compare on specs, accuracy, room requirements, and price. No hype — just the parts of the decision a buyer actually weighs.
Also worth a look
More comparisons with the LK830ST and ZH451ST
Buy LK830ST
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 | LK830ST | ZH451ST |
|---|---|---|
| Resolution | 4K UHD (3840×2160) | 1080p (1920×1080) |
| Lumens | 4,000 ANSI | 4,200 (ISO 21118) |
| Picture Mode | Golf picture mode | — |
- ResolutionLK830ST4K UHD (3840×2160)ZH451ST1080p (1920×1080)
- LumensLK830ST4,000 ANSIZH451ST4,200 (ISO 21118)
- Picture ModeLK830STGolf picture modeZH451ST—
Hardware
| Spec | LK830ST | ZH451ST |
|---|---|---|
| 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% (±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)ZH451STLaser (30,000 hours)
- Throw RatioLK830ST0.496:1 (fixed)ZH451ST0.496:1 (fixed)
- OffsetLK830ST114%; no lens shiftZH451ST116% (±5%); no lens shift
- DimensionsLK830ST10.99 × 9.03 × 4.74 in (W × D × H)ZH451ST10.79 × 8.5 × 4.49 in (W × D × H)
Requirements
| Spec | LK830ST | ZH451ST |
|---|---|---|
| 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)ZH451ST100 in at about 3.6 ft (Optoma's manual)
Performance
| Spec | LK830ST | ZH451ST |
|---|---|---|
| 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)ZH451ST—
Room planner
See each one in your sim room.
The planner draws each unit to scale with your room and your swing: where it mounts, the throw it needs, and whether your shadow crosses the light. Put in your room once, then switch units in the planner to compare.
Build your simulator in two minutes
Five questions. One tailored build with retailer links.
We ask about your budget, your room, and how you’ll use it. We return a complete build — launch monitor, mat, enclosure, projector, software, PC — with the reasoning behind every pick and the alternatives we considered.