Both the original Pentona and its successor the Pentona II can be found with different lenses (Domiplan 2.8/45 <> Trioplan 3.5/45 <> Meritar 3.5.45) as well as two different shutters, the simple Priomat and the more sophisticated Prestor shutter. Other minor differences which are of interest to the collector include the logo imprinted in the leather (KW-logo or Ernemannturm in 2 different sizes), distance scale in feet, meter or both and a red V on the Trioplan indicating wether or not the lens is coated.