Feature: 1. Supported objective size range: 44 to 70mm / 1.7 to 2.8in. Aperture: 60mm / 2.4in. Screws: M5 16mm. Cleaning is a breeze with a soft cloth or tissue paper. REDUCED LIGHT AND RADIATION: Our solar film filter effectively reduces light and harmful radiation while maintaining excellent contrast for better image quality and shooting the activities of sunspots with accuracy.
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