Combining a versatile 55mm focal length with a bright f/1.8 maximum aperture, this prime lens produces stunning portraits, nature studies and more. High performance ZEISS optics ensure outstanding resolution and contrast, while a dust and water resistant design gives you peace of mind when shooting outdoors. 9 blade aperture / Instead of a standard polygon-shaped lens aperture, this lens features a 9-blade circular aperture for more natural, rounded defocusing or ‘bokeh’. Less distortion / To optimise performance, aspherical lens elements maintain high contrast (even with the aperture wide open) and minimise distortion and flatness of the image plane. Internal focus / An internal focusing mechanism means the lens barrel doesn’t move, enabling a more compact design, faster autofocus response, and reduced minimum focusing distances. Dust & moisture resistant / The sealed design makes this lens a reliable companion to street and journalistic photography.