The g series impresses with its large-format balls. These large balls allow for even easier handling of the camera. Nature photographers in particular, working with long and extra-long focal distances, on the lookout to capture an elusive fox on their sensors or celluloid, are sure to appreciate this even easier handling of the camera. 

sp (=single panorama) means that there is a pan swivel unit at the base of the ball head, meaning that ARCA-SWISS Monoball can be rotated 360 degrees. 

In the quick-locking mechanism Classic, the camera plate is clamped with a locking screw.