Step 1 - Select the lens format you are using.

Choose your format





  

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

Enter the distance to the object   Enter distance to object (in feet):   
Enter the width   Enter width of picture (in feet):     
or
Enter the height   Enter height of picture (in feet):   
Enter the lens   Enter size of lens (in millimeters):  
  
3. Press "Calculate" to get the missing information.
(Press "Reset" to clear the form.)

Lens calculator image