What are the differences between the original ExpoAperture Depth-of-Field Guide and the ExpoAperture2 Depth-of-Field Guide?
The ExpoAperture2 Depth-of-Field Guide is a new product that has been completely redesigned to make it easier to use. First, we split the dial into two separate versions, one covering 15-135mm (Standard), and the other covering 70-600mm (Telephoto). Having each dial cover a narrower range of focal lengths improved the accuracy and usability of the ExpoAperture2 by allowing more space between the focal length marks and permitting us to include more total marks. We also increased the size of the ExpoAperture2 by about 25%. The larger size allowed us to insert Aperture marks in 1/3 fstop increments on the front of the dial, and to increase the space between the distance marks on the back. To accommodate the wide variety of sensor sizes now utilized in today’s DSLR cameras, and to accommodate a wider variety of film cameras, we added a third dial that compensates for the change in sensor/film format by allowing the photographer to select a desired sensor, or film size. Finally, the ExpoApe
