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Adjusting the hp sb21 focus |
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Rotate the focus ring until the image is clear. | sb21 |
The projector will focus at distances from 1.0 m to 12 m (3.3 feet to 39.4 feet). |
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Focus Ring |
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Projected image size (diagonal)
Focal Distance
Calculating the Projected
Image Size
The screen diagonal dimension can be approximated by using one of these formulas: 7.5*Distance(ft.)=Diagonal(in.) 0.625*Distance(m)=Diagonal(m)
For example:
If your sb21 is 10 feet from the screen, the approximate screen diagonal dimension will be 7.5*10 = 75 inches.
Screen | 25” | 98” | 123” | 197” | 246” | 295” | |
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Screen | 20.0”x15.0” | 78.4”x58.6” | 98.4”x73.8” | 157.6”x118.2” | 196.8”x147.6” | 236.2”x177.2” | |
Size (wxh) | |||||||
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Focal | 3.3’ | 13.1’ | 16.4’ | 26.2’ | 32.8’ | 39.4’ | |
Distance | |||||||
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NOTE: This graph is for user’s reference only.
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