AGC
Gauthier logo image by AWCam (Image rights) |
AGC logo on a Telma shutter image by Geoff Harrisson (Image rights) |
AGC are the initials of German shutter-maker Alfred Gauthier of Calmbach - and are frequently seen as the Gauthier logo on shutters.
Prontor and Vario are two common Gauthier shutter lines, used on many cameras.