BenQ TH685P: throw distance & specs
1080p · 3,500 lumens · throw ratio 1.13–1.46. For a 100″ screen it sits 8.2–10.6 ft away.
The BenQ TH685P sits 8.2–10.6 ft from a 100″ screen and about 9.8–12.7 ft from a 120″ screen, set by its official 1.13–1.46 throw ratio. At 3,500 lumens it pairs best with a matte-white screen in the dark, or an ALR screen with some ambient light.
Throw ratio
1.13–1.46
Brightness
3,500 lumens
Resolution
1080p
Type
lamp
| Throw ratio | 1.13–1.46 |
| Brightness | 3,500 lumens |
| Resolution | 1080p |
| HDR | Yes |
| Light source | lamp |
| Type | Standard throw |
| Input lag | 8.3 ms |
| Price | ~$799 |
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Throw-distance calculator
BenQ TH685P — distance for a 100″ screen
8.2–10.6 ft
Lens-to-screen distance. Zoom (if any) lets you fine-tune within the range.
Throw distance by screen size
How far the BenQ TH685P sits from the screen at common 16:9 sizes, across its full zoom range.
| Screen (16:9) | Image width | Throw distance |
|---|---|---|
| 90″ | 78″ | 7.4–9.5 ft |
| 100″ | 87″ | 8.2–10.6 ft |
| 120″ | 105″ | 9.8–12.7 ft |
| 150″ | 131″ | 12.3–15.9 ft |
Every projector’s throw distance, by screen size: 100-inch screen · 120-inch screen
Which screen for the BenQ TH685P?
The BenQ TH685P is a standard-throw projector, so it works with a matte-white screen in a dark room or an ALR screen if you watch with some ambient light. Match the screen size to the throw distance the calculator gives for your room.
Frequently asked questions
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Not sure it fits? Run your exact screen size through the calculator.
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