11.73 in 3.8 in  | 12.44 in 4.08 in  | |
| Available colors | ||
| Editiorial reviews | ||
| User rating |
 Optoma HD27 |  ViewSonic Pro7827HD | |
|---|---|---|
| Projector type | DLP | DLP |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Analog 3.5mm output | yes | yes |
| Component input (YPbPr/YCbCr) | no | yes |
| DVI in | yes | no |
| HDMI | yes | yes |
| HDMI version | 1.4a | 1.4 |
| Number of HDMI inputs | 2 | 3 |
| MHL | yes | yes |
| Other connectors | 5mm output | 5mm output |
| USB | yes | yes |
| USB 2.0 | 1 | 1 |
| VGA in | yes | yes |
| 12V trigger | yes | no |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Design type | Smart projector | Ceiling-mounted projector |
| Colour of product | White | Black |
| Built-in display | no | no |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Noise level | < 26 | < 36 |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Width | 11.73 in | 12.44 in |
| Height | 3.8 in | 4.08 in |
| Depth | 9.06 in | 8.98 in |
| Weight | 5.25 lb | 5.73 lb |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Throw ratio | 1.48 - 1.62 | 1.1 - 1.5 |
| Zoom ratio | 1.1 x | 1.3 x |
| Projection distance | 1 - 10 | 1.29 - 14.28 |
| Offset | 116.0 % | 130.0 % |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Lamp life max (normal) | 8000.0 h | 3500.0 h |
| Lamp life max (eco) | 6000.0 h | 6500.0 h |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Screen size | 28 - 305 | 30 - 300 |
| Screen size compatibility | 27.88 - 305.3 | 30 - 300 |
| Resolution | 1920 x 1080 px | 1920 x 1080 px |
| Number of colours | 1.07 billion colours | 1.073 billion colours |
| Native aspect ratio | 16:9 | 16:9 |
| Aspect ratio |
|
|
| Brightness (max) | 3200.0 lm | 2200.0 lm |
| Contrast ratio | 25000:1 | 22000:1 |
| Dynamic contrast | 25000:1 | 22000:1 |
| Video formats supported |
|
|
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| RoHS compliance | yes | yes |
| Quick start guide | yes | yes |
| Handheld remote control | yes | yes |
| Memory card reader | no | yes |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Ethernet connection | no | no |
| Wireless network (Wi-Fi) | no | no |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| 3D support (3D-Ready) | yes | yes |
| Glasses included | no | no |
| HD ready | yes | yes |
| Full HD (HD ready 1080p) | yes | yes |
| HDR | no | no |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Built-in speakers | yes | yes |
| RMS rated power | 10.0 W | 10.0 W |
| Optoma HD27 | ViewSonic Pro7827HD | |
|---|---|---|
| Power consumption (typical) | 230.0 W | 350.0 W |
| Power consumption (standby) | 0.5 W | 0.5 W |
| Pros | ||
|---|---|---|
| Cons |
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