William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 172 mm to 235 mm - BM-DS-GR90

William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 172 mm to 235 mm

• William Optics Diffraction Spikes Bahtinov Focusing Mask
• Fits dew shields with diameters of 172 mm to 235 mm
• Clear Acrylic Sheet design provides 92% light transmission
• Gives the Brightest diffraction spikes for focusing

This is a William Optics Diffraction Spikes Bahtinov Focusing Mask made from Acrylic material, which is high in light transmission. This design using Acrylic material provides 92% light transmission for the brightest diffraction spikes visibility when you do your focusing. It results in about 3X brighter diffraction spike images than the traditional metal material masks.

This William Optics Diffraction Spikes Bahtinov Focusing Mask is made to fit dew shields with diameters of 172 mm to 235 mm.

Specifications: