The Schneider APO-Digitar 80mm F5.6 Lens is specifically designed and created for Digital Backs of large formats (37 x 49) to offer color correct images circles. It is also designed for wide open use at f/5.6 and is mounted over Copal #0 conventional shutter. However you can stop down to f/11 at 1:2 distances and beyond that, and to f/8 at 1:1. 

• The Schneider Large Format Lens maximizes the capacity of the digital backs
• This lens also offers apochromatic color correction for ultimate edge delineation across full field
• You can use these lenses at maximum aperture
• You can also use the Schneider APO-Digitar 80mm F5.6 Lens with 6x6, 645, and 3mm film backs for offering excellent picture quality
• The Schneider Large Format Lens accepts threaded filter of 40.5mm
• They can be used on a wide range of DSLR cameras due to the short and narrow rear barrel of these lenses
• This lens comes in the 1.7 x 1.9" dimensions and weighs only 8.0oz
  

This is a 150mm f/5.6 Digitar lens in a Copal #0 Shutter. It is specially designed to stand up to the performance demands of today's high resolution digital backs, allowing you bring the swings and tilts of traditional large format photography in the digital arena.

This lens has a front accessory thread allowing it to utilize 40.5mm screw-in filters.