Schneider 138mm Diopter +0.5, +1, +2, +3

Schneider diopters are made from the finest optical glass and feature with 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. This set is useful for maintaining simultaneous focus on close and distant objects when using regular prime or zoom lenses.