Using an Anamorphic Attachment will often limit your taking-lens' ability to focus close to the camera; however, the SLR Magic Achromatic Diopter Set is a pair of diopters with a 77mm diameter thread. The set features highly-corrected glass elements that allow you to close focus with your SLR Magic Anamorphot attachment, or other lenses with a 77mm thread.
When using these diopters with your SLR Magic Anamorphot the +0.33 diopter is effective for focusing between 5 and 10', while the +1.33 is effective for focusing closer than 3.5'.
Corrected optics minimize chromatic aberration in use.
Coated optics for flare reduction.
Diopters are stackable, although SLR magic recommends only doing this with taking lenses longer than 35mm to avoid vignetting.
The diopters come in a small filter case with a magnetic clasp.