operation

Adjusting the hp sb21 focus

 

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).

 

Focus Ring

 

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”

(Diagonal)

 

 

 

 

 

 

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)

 

 

 

 

 

 

Focal

3.3’

13.1’

16.4’

26.2’

32.8’

39.4’

Distance

 

 

 

 

 

 

NOTE: This graph is for user’s reference only.

19