A wonderful lens. Perhaps a bit "under-engineered for traditional landscape use owing to vignetting and softer corners, but exceptional image sharpness, contrast & rendering for shooting all subjects at wider apertures.
Superb centre area resolution wide-open Super micro contrast Images have real pop and depth Complete correction of colour fringing and spherical aberration Exceptional rendering in out of focus areas and transition to blur Lovely close-up image quality Easy to focus..
Costly and a stop slower than many rivals Extreme borders only sharpen fully when stopped down to f5.6-f8