Basic Principles of Magnification

     
  1 The stronger the power of the lens, the smaller the diameter. Conversely large magnifiers are weaker in magnification than smaller ones.
     
  2 The stronger the lens, the closer it must be to the paper.
     
  3 The greater the magnification used, the smaller the area viewed.
     
  4 Stronger thicker lenses reduce more of the transmission of light, and thus more light may be required.
     
  5 The direction a magnifier is facing, may make a big difference in some magnifiers.
     
  6 The closer your eye is to the magnifier, the wider the field of view.
     
  7 High powered lenses may have more distortion.
     
  8 Not all marked magnification powers are equivalent