Simple Imaging & Magnification                  
Lens Focal length mm  
Lens Diameter mm  
Object distance mm  
Object Height mm  
Image distance mm 1/f = (1/o-1/i)      
Image Height mm  
Image   Note: a Real image is something that can be projected onto a screen but can be difficult to view directly, a Virtual image cannot be projected on a screen but can be viewed (like looking into binoculars...                  
  Lens is at 0