Utilizing a spring-folded assembly design to hold it securely in place on a , the Daystar Filters 50mm White-Light Universal Lens Solar Filter allows you to safely view or photograph the sun and solar eclipses. Its filter is made of the 12312-2 ISO-certified SOLARITE film, which stops more than 99.999% of intense light, plus 100% of harmful IR and UV radiation — revealing sunspots and super granules on the solar surface. Made to fit on the front of lenses, telescopes, spotting scopes, or other optics and imaging devices, this version of the ULF can accommodate housings, sunshades, and dew shields with an outside diameter from 85-99mm (3.34-3.89"). The filter has a clear aperture of 90mm, so vignetting may occur when used on lenses and optics that approach the maximum recommended diameter in the size range.

• Safe Solar Viewing and Photography
• For Lenses, Telescopes, and other Optics
• 12312-2 ISO-Certified SOLARLITE Film
• Fits Outside Diameters from 85-99mm
• 90mm Clear Filter Aperture
• Spring-Folded Design Holds In Place