Schneider 6" Unmounted +1 Split-Field Lens

This Schneider 6" Unmounted +1 Split-Field Lens is an unmounted, semicircular glass filter that is 6" in diameter and is designed for use in third-party or custom filter holders. When installed, it occupies half of a compatible filter holder's aperture and serves as a close-up lens for use in achieving macro-like results. Close-up lenses are magnifiers that optically decrease the focal length of a camera lens they are placed on. This effect lessens the minimum focus distance between your camera lens and an object. Magnification can then be obtained while photographing an object by moving the front of the camera lens close to it. The magnifying power of a close-up lens is indicated by its diopter strength. A close-up lens with a higher diopter number provides more relative magnification and can be combined with other close-up lenses to increase or fine-tune its effect. This split-field lens has a diopter strength of +1. Diopter strengths of +1/2, +2, or +3 are also available where this split-field lens type's effect becomes progressively stronger with each diopter strength number increase.