Schneider Optics : Diopters
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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
Here at Schneider-Kreuznach we 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.
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.
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.
For more info, check our Factsheets below.
| Strengths | Sizes | Mounting | Coating | Glass Type |
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| Diopter Full | +1/4
+ 1/2
+ 1
+ 2 | 138 mm
4.5 inch
M95 | Drop-In Filter Cell
Screw-In Filter | BBAR | N-BK 7 |
| Diopter Split | +1/4
+ 1/2
+ 1
+ 2 | 138 mm
4.5 inch | Drop-In Filter Cell | BBAR | N-BK 7 |
| Diopter Spot | + 1/2
+ 1
+ 2 | 138 mm | Drop-In Filter Cell | BBAR | N-BK 7 |
DIOPTER FULL
Model Data:
- 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)
- New: Available as drop-in and screw-in filters
DIOPTER SPLIT
Model Data:
- 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
Model Data:
- 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)
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Prices and specifications subject to change without notice.