The Schneider 24mm f5.6 Apo Digitar Lens is designed to be used in digital backs. It improves the performance of the high-resolution digital back.With this Schneider XL copal lens, you can equip the digital back with the swings and tilts of the traditional large format photographyThese large format camera lenses feature a front accessory thread to make it use the 52mm screw-in-filters