Canon ef full frame prime lenses that are 10mm or wider.
10mm full frame lens canon.
Other extreme wide angles are the voigtlander 10mm f 5 6 prime sony the irix 11mm f 4 canon nikon canon 11 24mm f 4 and newly announced samyang xp 10mm f 3 5 canon nikon.
The rokinon special performance sp 10mm f 3 5 is the widest full frame rectilinear prime lens currently available for canon ef mount cameras.
The rokinon 10mm f2 8 ultra wide angle lens provides the widest angle of view of any of the highly regarded rokinon prime rectilinear non distorted wide angle lenses.
It also provides equally amazing ultra wide images with canon aps c sensor models where it delivers a 35mm effective focal length of 16mm.