Chapter 2 Getting
To use a screen size not listed in this manual, check the screen size SD (m) and use the respective formula to calculate projection distance. The unit of all the formulae is m. (Values obtained by the following calculation formulae contain a slight error.)
For PT‑EZ770Z
Lens type | Projection Lens | Aspect ratio |
| Projection distance (L) formula | |
Model No. |
| ||||
|
|
|
|
| |
|
| 16:10 | Min. (LW) |
| L = 1.3900 x SD - 0.0549 |
|
| Max. (LT) |
| L = 2.3640 x SD - 0.0482 | |
|
|
|
| ||
Standard zoom lens | — | 16:9 | Min. (LW) |
| L = 1.4286 x SD - 0.0549 |
Max. (LT) |
| L = 2.4297 x SD - 0.0482 | |||
|
|
|
| ||
|
| 4:3 | Min. (LW) |
| L = 1.5736 x SD - 0.0549 |
|
| Max. (LT) |
| L = 2.6763 x SD - 0.0482 | |
|
|
|
| ||
|
| 16:10 | — |
| L = 0.6763 x SD - 0.0577 |
ET‑ELW21 | 16:9 | — |
| L = 0.6951 x SD - 0.0577 | |
|
| 4:3 | — |
| L = 0.7656 x SD - 0.0577 |
|
| 16:10 | Min. (LW) |
| L = 1.0557 x SD - 0.0555 |
|
| Max. (LT) |
| L = 1.4374 x SD - 0.0534 | |
|
|
|
| ||
Short focus zoom lens | ET‑ELW20 | 16:9 | Min. (LW) |
| L = 1.0851 x SD - 0.0555 |
Max. (LT) |
| L = 1.4774 x SD - 0.0534 | |||
|
|
|
| ||
|
| 4:3 | Min. (LW) |
| L = 1.1952 x SD - 0.0555 |
|
| Max. (LT) |
| L = 1.6273 x SD - 0.0534 | |
|
|
|
| ||
|
| 16:10 | Min. (LW) |
| L = 2.3662 x SD - 0.1140 |
|
| Max. (LT) |
| L = 3.8583 x SD - 0.1129 | |
|
|
|
| ||
Long focus zoom lens | ET‑ELT20 | 16:9 | Min. (LW) |
| L = 2.4320 x SD - 0.1140 |
Max. (LT) |
| L = 3.9656 x SD - 0.1129 | |||
|
|
|
| ||
|
| 4:3 | Min. (LW) |
| L = 2.6788 x SD - 0.1140 |
|
| Max. (LT) |
| L = 4.3680 x SD - 0.1129 | |
|
|
|
| ||
|
| 16:10 | Min. (LW) |
| L = 3.8667 x SD - 0.2123 |
|
| Max. (LT) |
| L = 6.1416 x SD - 0.2108 | |
|
|
|
| ||
Ultra long focus zoom lens | ET‑ELT21 | 16:9 | Min. (LW) |
| L = 3.9742 x SD - 0.2123 |
Max. (LT) |
| L = 6.3123 x SD - 0.2108 | |||
|
|
|
| ||
|
| 4:3 | Min. (LW) |
| L = 4.3775 x SD - 0.2123 |
|
| Max. (LT) |
| L = 6.9529 x SD - 0.2108 | |
|
|
|
| ||
For PT‑EW730Z
Lens type | Projection Lens | Aspect ratio |
| Projection distance (L) formula | |
Model No. |
| ||||
|
|
|
|
| |
|
| 16:10 | Min. (LW) |
| L = 1.4062 x SD - 0.0504 |
|
| Max. (LT) |
| L = 2.3944 x SD - 0.0497 | |
|
|
|
| ||
Standard zoom lens | — | 16:9 | Min. (LW) |
| L = 1.4452 x SD - 0.0504 |
Max. (LT) |
| L = 2.4609 x SD - 0.0497 | |||
|
|
|
| ||
|
| 4:3 | Min. (LW) |
| L = 1.5919 x SD - 0.0504 |
|
| Max. (LT) |
| L = 2.7106 x SD - 0.0497 | |
|
|
|
| ||
|
| 16:10 | — |
| L = 0.6842 x SD - 0.0572 |
ET‑ELW21 | 16:9 | — |
| L = 0.7032 x SD - 0.0572 | |
|
| 4:3 | — |
| L = 0.7746 x SD - 0.0572 |
|
| 16:10 | Min. (LW) |
| L = 1.0702 x SD - 0.0554 |
|
| Max. (LT) |
| L = 1.4530 x SD - 0.0534 | |
|
|
|
| ||
Short focus zoom lens | ET‑ELW20 | 16:9 | Min. (LW) |
| L = 1.1000 x SD - 0.0554 |
Max. (LT) |
| L = 1.4934 x SD - 0.0534 | |||
|
|
|
| ||
|
| 4:3 | Min. (LW) |
| L = 1.2116 x SD - 0.0554 |
|
| Max. (LT) |
| L = 1.6449 x SD - 0.0534 | |
|
|
|
| ||
ENGLISH - 39