Skip to main content

@Heading

@Body

Step 1 — Select the lens format you are using.

F

1⁄4 inch
1⁄3 inch
1⁄2 inch
2⁄3 inch
1 inch
 

Step 2 — Enter any 2 of the 3 other pieces of information.

D Enter distance to object (in feet): 
W Enter  width of picture (in feet): 
or
H Enter height of picture (in feet): 

L Enter  size of lens (in millimeters): 

 
3. Press ​“Calculate” to get the missing information.
(Press ​“Reset” to clear the form.) 

illustration with camera viewing features: distance, height, focal length

Have questions? We can help

Our video security experts can help you implement the right security system for your business.