Cinefilter Diopters | Schneider-Kreuznach

About Diopters

Generally, diopters are lens attachments that shorten the close focus distance of lenses by reducing the focal length of the optical system. Their strength is given as reciprocal of focal length in meter (so called diopter), e.g.: + 1 diopter = 1 meter infinity focus plane + 2 diopter = 0.5 meter infinity focus plane

Schneider-Kreuznach offer three different types of diopters:

Diopter Full

Classic full diopters reduce the close focus distance and even allow you to take macro images without using a dedicated macro lens.

• Reduce close focus distance
• Macro images without dedicated macro lens:
• Bringing out the sharpest detail in tiny subjects
• Diopter strengths: +1/4, +1/2, +1, +2, +3
• No exposure compensation needed
• Broadband coating (BBAR)
• Available as drop-in and screw-in filters

Diopter Split

A split diopter is a standard diopter element which is precision-cut in half and mounted in a ring. It allows you to focus both fore- and background at the same time. Hence, it can attract the viewer's attention to an object in the back while the main scene remains focused.

• Focuses both fore- and background
• Creates second area of focus
• Diopter strengths: +1/4, +1/2, +1, +2, +3
• Usable in compatible matte boxes
• No exposure compensation needed
• Broadband coating (BBAR)

Diopter Spot

Basically, a spot diopter is a classic diopter with a plain, polished area in its center. This leads to a sharp image in the middle and an out-of-focus area towards the edges. For dreamy images with an in-focus center.

• Sharp image center, out-of-focus edges
• Plain area in the center: 25 mm or 50 mm
• Diopter strengths: +1/2, +1, +2
• Usable in compatible matte boxes
• No exposure compensation needed
• Broadband coating (BBAR)

The Schneider Group specializes in developing and producing high-Performance lenses for film and photo, cinema projection lenses, as well as industrial optics and precision mechanics.