| Specification | Optoma HD141X | Acer H7550STz |
|---|---|---|
| Audio | ||
| Integrated Speakers | ||
| Sound Type | mono | |
| Speaker Power, W | 10 | 10 |
| Lens | ||
| Lens Shift | vertical +/- 40% | |
| Focal Length, Mm | 21.09 - 24.1 | 10.20-11.22 |
| F-number | 2.5 - 2.67 | 2.6-2.78 |
| Zoom Ratio | 1.1x | 1.1x |
| Properties | ||
| Projection Screen Size, Inch | 30 - 307 | 54.3-299.2 |
| Projection System | DLP | DLP |
| Pixel Number | 1024000 | 8300000 |
| Color Reproduction | 1073.4 million | |
| Throw Ratio Range | 1.48 - 1.62 | 0.69:1 - 0.76:1 |
| Contrast Ratio | 20000:1 | 16000:1 |
| Brightness, Lumens | 3000 | 3000 |
| Power Consumption, W | 262 | 339 |
| Aspect Ratio | 16:9 | 16:9 |
| Input Lag, Ms | 33 | |
| Projection Distance, M/ft | 1 - 11/3.2 - 36 | 0.9-4.6/2.9-15 |
| Noise Level, Dba | 26 | 33 |
| Features | ||
| Projection Method | front, rear, ceiling mount, tabletop | |
| Security | password protection | |
| 3d | ||
| Mouse Functions | ||
| Remote Control | ||
| Connectivity | ||
| Audio Output (3.5mm) | 1 | 1 |
| Usb (service) | 1 | |
| Audio Input (3.5mm) | 1 | |
| Usb | ||
| Audio Input (rca) | 1 | |
| 12v Trigger | 1 | |
| Composite Video Input (rca) | 1 | 1 |
| Rs232 (db-9pin) | ||
| Vga Input | 1 | 1 |
| Mhl | ||
| Ethernet (rj45) | ||
| Spdif (optical) | ||
| Dimensions | ||
| Weight, Kg/pounds | 2.49/5.5 | 3.4/7.5 |
| Size W X H X D, сm/inches | 31.50 x 10.16 x 22.35/12.4 x 4 x 8.8 | 35.5 x 24.1 x 9.9/14 x 9.5 x 3.9 |
| Resolution | ||
| Resolution Abbreviation | Full HD | Full HD |
| Max Resolution (resized) | 1920 x 1200 | 1920 x 1080 |
| Native Resolution | 1920 x 1080 | 1920 x 1080 |
| Video Compatibility | ||
| Secam | ||
| Pal | ||
| Ntsc | ||
| Operating Temperature | ||
| Max, C/f | 40/104 | 40/104 |
| Min, C/f | 5/41 | 0/32 |
| Settings | ||
| Keystone Adjustment Horizontal, +- Degrees | ||
| Keystone Adjustment Vertical, +- Degrees | 40 | 40 |
| Lamp | ||
| Lamp Life (eco Mode), Hours | 6000 | 6000 |
| Lamp Life (normal Mode), Hours | 5000 | 4000 |
| Lamp Type, W | 190 | 210 |
