Lindsey Optics 138mm Round Brilliant Drop-In Close-Up Diopter +1/4

The Lindsey Optics 138mm Round Brilliant Drop-In Close-Up Diopters can be used to increase the magnification of a lens, such as when you need to get extreme close-up images of small objects. While not a true macro lens, they are lightweight and easy to use with standard cine matteboxes and filter holders. Lindsey Optics Brilliant Diopters are simple plano convex magnifying lenses manufactured to the highest standards and are specifically designed for cinematography.

Each close-up lens has a focal length expressed in millimeters. However, for convenience, the focal length is expressed in "diopter strength", which is simply the reciprocal of the focal length in meters. For a detailed explanation, see Lindsey Optics' blog post on diopters. Lindsey Optics Brilliant Filters are made from the finest optical glass and feature a durable, multi-layer BROADBAND anti-reflective coating. This dramatically reduces light loss and flare. Contrast, color saturation. and image quality are preserved.

These Round Drop-In Diopters are available in 138mm diameter and five strengths: +1/4 (included), +1/2, +1, +2, and +3.  

NOTE: These Round Drop-In Diopters are also available in 4.5" diameter and four strengths: +1/2, +1, +2, and +3 (sold separately).