Optoma · Under 3,000 lumens · WXGA
Optoma ML750i
450lumens
1280×800native
1.5–1.5throw ratio
0.4 kgweight
The Optoma ML750i is a DLP x 1 projector rated at 450 lumens with a native resolution of 1280×800. It uses a led light source rated for 20,000 hours. Its lens has a throw ratio of 1.5:1. Released August 2025.
Throw distance table
Distance from lens to surface for each image width (16:10 (WXGA)). Calculated as throw ratio × width; check the manufacturer's lens calculator before installation.
| Image width | Height | Standard lens 1.5:1 |
|---|---|---|
| 2 m (6.6 ft) | 1.25 m | 3.0 m |
| 3 m (9.8 ft) | 1.88 m | 4.5 m |
| 4 m (13.1 ft) | 2.5 m | 6.0 m |
| 5 m (16.4 ft) | 3.12 m | 7.5 m |
| 6 m (19.7 ft) | 3.75 m | 9.0 m |
| 8 m (26.2 ft) | 5.0 m | 12.0 m |
| 10 m (32.8 ft) | 6.25 m | 15.0 m |
| 12 m (39.4 ft) | 7.5 m | 18.0 m |
| 15 m (49.2 ft) | 9.38 m | 22.5 m |
| 20 m (65.6 ft) | 12.5 m | 30.0 m |
| 25 m (82.0 ft) | 15.62 m | 37.5 m |
| 30 m (98.4 ft) | 18.75 m | 45.0 m |
Open in the throw-distance calculator →
Maximum image size for projection mapping
Largest image that keeps a 10:1 contrast against ambient light on a light, matte surface (80% optical efficiency). See how this is calculated.
| Ambient light | Max area | Max width × height |
|---|---|---|
| Dark rural site (1 lux) | 40 m² | 8.0 × 5.0 m |
| Quiet street at night (5 lux) | 8 m² | 3.6 × 2.2 m |
| Lit city square (15 lux) | 3 m² | 2.1 × 1.3 m |
| Bright urban area (30 lux) | 1 m² | 1.5 × 0.9 m |
| Indoor, lights dimmed (50 lux) | 1 m² | 1.1 × 0.7 m |
Full specifications
| 3D Modes | PC 3D Ready |
|---|---|
| Aspect Ratio | 16:10 (WXGA) |
| Audible Noise | 32 dB / 29 dB (Eco) |
| Best Used For | Corporate/Business Digital Signage |
| Brightness | 450 Lumens (ANSI) 1 |
| Color Processing | 8-bit |
| Connection Panel | Audio Out: Mini Jack HDMI 1.4b MemoryCard RS232: DB-9pin USB: A |
| Data Modes | MAX 1920x1080 |
| Digital Keystone | Vertical only |
| Digital Zoom | Yes |
| Display Type | DLP x 1 |
| Dynamic Contrast | 20,000:1 |
| Features | PC 3D Ready Memory Card Reader 24/7 Operation Soft Carrying Case Crestron RoomView™ FCC B |
| Image Size | 16.98" - 100.00" |
| Included Lens | Fixed focal length , manual focus |
| Input Lag | 1080p/60: 16.6ms |
| Internal Speakers | 2.0 Watts Mono |
| Lens Shift | No |
| Light Source | LED |
| Light Source Life | 20,000 hours |
| MSRP | n/a |
| Power | 67 Watts 100V - 240V |
| Projector Size | 1.54" x 4.13" x 4.17" (HxWxD) |
| Released | August 2025 |
| Resolution | 1280x800 |
| Status | Shipping |
| Street Price | $749 (USD) |
| Throw Distance | 1.8' - 10.6' Calculate Throw Distance |
| Throw Ratio | 1.50:1 (D:W) |
| Video Modes | 720p, 1080i, 576i, 576p, 480p, 480i |
| Warranty | 1 Year |
| Weight | 0.9 lbs |
Specifications compiled from ProjectorCentral and manufacturer data. Prices change — verify with dealers.
Similar projectors
| Model | Lumens | Resolution | Light source | Throw ratio | Street price |
|---|---|---|---|---|---|
| Dell M115HD | 450 | 1280×800 | LED | 1.5:1 | $549 |
| Dell M318WL | 500 | 1280×800 | LED | 1.5:1 | $549 |
| Optoma ML1050STi | 535 | 1280×800 | LED | 0.8:1 | $799 |
| LG CineBeam PF510Q | 450 | 1920×1080 | LED | 1.2:1 | $524 |
| InFocus Quantum Crusader Master | 450 | 1920×1080 | LED | 1.2:1 | $299 |
| Boxlight 3700 | 450 | 800×600 | 150W Metal Halide bulb | $6,099 | |
| Boxlight 4200 | 450 | 800×600 | Metal Halide bulb | ||
| Panasonic PT-L5 | 450 | 800×600 | 150W Metal Halide bulb | 2.05–2.73:1 | $3,495 |