Lindsey Optics Brilliant Close-Up Round Drop-in Lens Diopter Density:1 each ring and mount is

each ring and mount is sealed to prevent water and dust from entering

a 1/4"-20 support foot is built into the dust- and water-resistant metal lens body

Precision color-blending optics

The 4 x 5

Lindsey Optics Brilliant Close-Up Round Drop-in Lens Diopter Density:1 each ring and mount isOptical Elements that can be used to increase the magnification of a lens. Close Up Lenses (Diopters) are used when you need to get really close up images of small objects. While not a true macro lens, they are lightweight and quick to use with standard matte boxes and filter holders. Lindsey Optics Round Drop In Diopters are available in two standard cine sizes of 4 1 2 Inch Round and 138mm Round. 4. 5" Round Drop In Diopters are available in 4