Select the CCD Format: 1/4 inch CCD
1/3 inch CCD 		 
 
 
  Enter any 2 of the 4 fields:(distance, width, height and lens size)  
  Enter distance to object (in feet):  
  Enter width of picture (in feet): or  
  Enter height of picture (in feet):  
  Enter size of lens (in millimeters):  
 
 
  Press the "Calculate" button to get the missing piece of information. (Press the "Reset" button to clear the form and start over.)