Kenko 180° fisheye
we will test a lens fish eye adapter : the Kenko 180° fisheye The lens was first screwd to a 55mm to 52mm filter then to the filer of a Canon 50mm 1.4 FD to a Nex Adapter to the Sony A7II
The 50mm focal length is perfect for having a full frame Fisheye circular image ... on a APSC it would not be circular.
The Lens is not sharp as hell, but it's pretty good coupled with a sharp lens like the Canon FD, it's also give a incredible look at your shots, of course the use of a Circular video is pretty rare for a cinematic project, but for time lapses it give an impressive effect.
This Lens is pretty rare, but i was lucky to find it only for 60 euros.