Projector throw calculator
Distance = throw ratio × image width. Enter the ratio from the spec sheet (one value for a fixed lens, two for a zoom), then the image size and shape. Distances are measured from the lens to the screen.
Set to the K3's 1.2:1 fixed lens.
:1
:1
inches
Screen shape
Lens to screen
3.19 m
10′ 6″
Image size
2.66 × 1.49 m
8′ 9″ × 4′ 11″
Or start from the distance
With the same lens and screen shape, how large an image does a given lens-to-screen distance give?
metres
Image diagonal: 151″ (16:9) at 4.00 m.
Screen shape
Lens
–:1
FitsFixed lens: the lens must sit exactly 3.19 m from the screen (10′ 6″).
Image
2.66 × 1.49 m
8′ 9″ × 4′ 11″
Lens can sit
3.19 m
10′ 6″
At 3.19 m
✓ Fills the screen at 1.20:1
fixed 1.20:1 lens
Show the numbers
| Value | Metric | Imperial |
|---|---|---|
| Image width | 2.66 m | 8′ 9″ |
| Image height | 1.49 m | 4′ 11″ |
| Nearest lens position | 3.19 m | 10′ 6″ |
| Furthest lens position | 3.19 m | 10′ 6″ |
| Room depth needed (+35 cm chassis) | 3.54 m | 11′ 7″ |
The plan above is to scale. Real lenses are not perfectly linear, so check the projection-distance table on the data sheet when the fit is tight.