138Mm Mounted +1/8 Full Field Diopter Circular Close Up Lens

These High-Quality Single Element Close-Up Lenses Require Absolutely No Exposure Compensation. Schneider Diopters Are Made From The Finest Optical Glass. They Feature Schneider'S Hard, Anti-Reflective Coating On Both Front And Rear Surfaces. This Measurably Reduces Light Loss And Flare While Helping To Ensure Proper Color, Contrast And Overall Image Quality. Schneider Drop-In Diopters Feature Rugged Black Anodized Aluminum Rings. The Diopters Are Protected By A Unique Mounting Technique Which Ensures Superb Structural Integrity And Consistent Long-Term Performance, Even In The Harshest Production Environments. Diopters Are Available In Strengths Of +1/8, +1/4,+1/2, +3/4, +1.0, +2.0, +3.0. Diopters Can Increase The Minimum Working Distance Enabling Closer Focus From A Greater Working Distance. Calculation Of Strength Depends On Focal Length, Focus Setting, Object Distance And Size.