Renkon.!

This is an application for iPhone to figure out what size (mm) of lens to be used in order to obtain the same angle of view when a camera with different format is used. For instance, What size (mm) of lens should be prepared for 35mm Super 1.78 camera in order to obtain the same angle of view as given by 2/3CCD 16:9 camera having 25mm as focal length?The answer is 62mm. As user-configurable custom formats are available, you can infinitely setup as you want.