Zeiss Planar T* 50mm f/1.4 ZF lens is designed to express character in photography. Equal to the perspective of the human eye, the lens employs a fast aperture and exception compact design. Pleasing portraits are at produced at its widest aperture and sharpness beyond f/4 for any general photographic application. The nine blade aperture creates desirable background blur to keep the attention on the main subject. Its successful design correct aberrations and its performance is constant over a wide range of imaging ratios. The anti-reflective coating on all surfaces and an optical design guarantees images of superior brilliance at all times. Always be ready for the unexpected with this high performance and versatile Zeiss lens.