SCHNEIDER 138mm +3/4 Full Field Diopter Close-Up Lens

138mm +3/4 Diopter for Macro Work

The Schneider 138mm +3/4 Full Field Diopter is a single-element close-up lens designed for photographers who need to reduce minimum focusing distance on large-diameter optics. It mounts via a 138mm thread and allows closer focus without requiring a dedicated macro lens or extension tubes. The unit is built with a rugged black anodized aluminum ring that protects the optical glass during frequent handling on set or in the field.

Optical Consistency During Extended Shoots

The lens uses high-quality optical glass with Schneider's hard anti-reflective coating applied to both surfaces. This coating reduces light loss and flare consistently, maintaining contrast and accurate color reproduction across long sessions. Because the diopter adds no exposure compensation requirement, metering remains stable regardless of how many frames are captured in sequence. The durable housing ensures the glass alignment does not shift under normal production vibration or temperature changes.

Thread Mount Limits Filter Stacking

The 138mm thread size determines which lenses or matte boxes accept this diopter directly; it will not fit smaller front diameters without a step-up ring. Adding this element increases the overall optical stack length, which may cause vignetting on certain wide-angle configurations at close focus. Photographers needing stronger magnification must swap to a different diopter strength, as this model provides a fixed +3/4 power only.