Zeiss Loxia 21mm 2.8 E-mount

Design

When image angles reach extreme sizes in SLR systems, the distance between the rear lens and the image plane must be much greater than the focal length - the original field of application of the Distagon type . This elaborate retrofocus design can also be used to excellent effect with modern highly corrected lenses with longer focal lengths.

DeClick function

A completely new feature of the Loxia lenses is the ability to de-click the aperture click mechanism with the supplied tool via a set screw on the bayonet surface. In video applications, this makes it possible to smoothly compensate for an unplanned difference in brightness during camera pans. This function can also be used with other video systems that are suitable for adaptation due to their favorable dimensions.

Precise manual focus

Operating a lens manually means controlling the image result from your fingertips. Ergonomics is everything. The ZEISS lenses feature a large rotation angle that allows precise focusing to the point. Changes are immediately visible in the viewfinder. The high-quality focusing mechanism is smooth and has no play, thus additionally supporting intuitive play with the plane of focus. The precise engraving in meters and feet as well as the depth-of-field scale provide additional assistance for manual focusing.

Virtually distortion-free optics

Dramatic perspectives and the view from unusual angles - ZEISS lenses open up new creative possibilities. Distortion would interfere with the composition, as straight lines whose image does not pass through the center of the image would be rendered curved. This disturbing effect is largely compensated for by sophisticated optical designs for all focal lengths.

High-quality all-metal mount

Tangible quality and high value retention qualify ZEISS lenses for decades of intensive use. The high-quality machined all-metal mount, the easy-grip metal focusing and aperture ring, and the robust front bayonet and filter thread ensure an inspiring photography experience. In addition, a special sealing ring on the bayonet protects the interface between camera and lens.

Comprehensive compatibility

ZEISS lenses are suitable for Sony Alpha digital cameras and have been optimized for films and sensors up to the full 35 mm format (24 x 36 mm).