For the Canon EF 14mm f2.8L II USM.
The exacting professional's ultra wide-angle lens, the EF 14mm f/2.8L II USM uses UD and aspherical elements for paramount image quality.
For the Sigma 14mm F1.8 DG HSM - any mount.
For the Samyang 14mm f/2.8 ED AS IF UMC.