Bryan from TDP has completed his review of the highly regarded Zeiss 15mm f/2.8 Distagon lens. His thoughts on the lens match mine, it is simply the best full frame ultrawide lens available for Canon DSLRs.
“As I just said, I regard the Zeiss 15mm f/2.8 Distagon T* ZE Lens as the best-available ultra-wide angle landscape lens available. This lens is also an excellent choice for architecture and other confined-space photography. The Zeiss 15mm f/2.8 Distagon T* ZE Lens offers very impressive build quality and excellent prime lens image quality in a made-for-landscape and architecture focal length.”