The Canon EF 14mm f/2.8L USM is an ultra wide angle prime lens. It is the widest prime lens in the Canon EF series. Because it is corrected for a rectilinear projection, the field of view is less than that of the Canon 15mm fisheye (Source: WikiPedia)
The D1 offers Profoto built in Air for remote radio sync and control, providing full control of power, modeling light and triggering up to 300 meters away – all at the click of a button. ... D1 is compatible with over 120 light shaping tools and has a rubber collar that makes it easy to slip them on to fit the head.