Portable wide angle Zeiss quality This superb wide-angle prime remains true to the original Sonnar concept with a bright F2.8 maximum aperture. A perfect match for a7 series full frame bodies, with outstanding optical performance in a versatile 35 mm focal length, this Zeiss lens delivers superior contrast and resolution throughout the image. Zeiss 35mm full frame prime lens Bright F2.8 maximum aperture Zeiss T anti-reflective coating minimizes flare Circular 7-blade aperture for beautiful defocus effects Dust and moisture-resistant design Perfect performance for the alpha7 series - The small size, versatile 35 mm focal length, and outstanding performance of this Zeiss Sonnar T lens make it an ideal match for compact 35mm full-frame format E-mount bodies. Zeiss resolution from corner to corner - Three double-sided aspherical elements effectively control spherical aberration, while the Zeiss T coating minimizes flare and ghosting for great color and contrast.