Head-to-head
BenQ TH685P vs ViewSonic LS711HD
Side-by-side comparison of the BenQ TH685P and ViewSonic LS711HD: throw ratio, brightness, resolution, input lag and price — plus which one to buy.
Quick verdict
The BenQ TH685P and ViewSonic LS711HD are both standard-throw projectors in a similar price range. The ViewSonic LS711HD is brighter — 4,200 vs 3,500 lumens. The ViewSonic LS711HD can sit closer to the screen (throw ratio from 0.49 vs 1.13). The BenQ TH685P costs less — about $799 vs $899. For gaming, the BenQ TH685P has the lower input lag at 8.3 ms.
| Spec | BenQ TH685P | ViewSonic LS711HD |
|---|---|---|
| Throw ratio | 1.13–1.46 | 0.49–0.5 |
| Brightness | 3,500 lumens | 4,200 lumens |
| Resolution | 1080p | 1080p |
| HDR | Yes | No |
| Light source | lamp | laser |
| Input lag | 8.3 ms | 49.5 ms |
| Price | ~$799 | ~$899 |
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Throw distance: BenQ TH685P vs ViewSonic LS711HD
How far each projector must sit from the screen for the same image size.
| Screen | BenQ TH685P | ViewSonic LS711HD |
|---|---|---|
| 80″ | 6.6–8.5 ft | 2.8–2.9 ft |
| 100″ | 8.2–10.6 ft | 3.6–3.6 ft |
| 120″ | 9.8–12.7 ft | 4.3–4.4 ft |
| 150″ | 12.3–15.9 ft | 5.3–5.4 ft |
Which should you buy?
- • Choose the ViewSonic LS711HD if a brighter picture in ambient light matters most.
- • Choose the BenQ TH685P for gaming — lower input lag means more responsive play.
- • Choose the BenQ TH685P if you want to spend less for similar core performance.
Frequently asked questions
The ViewSonic LS711HD is brighter, rated at 4,200 lumens versus 3,500 lumens.
More comparisons
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