ND16/PL "PolarPro Quartz Line" filtras, skirtas 77 mm objektyvams

Filters of the highest quality. Durable glass QuartzLine B270 Plastic Refractive index 1.456 1.523 1.58 Surface reflectance 0.034 0.042 0.056 Stress-relief temperature 1120°C 510°C 463°C Robust quartz glass Low reflective surface resistant to extreme temperatures and a refractive index of only 1.456. Different types, many possibilities Handmade 4-part frame, allows smoother filter adjustment than a frame made of aluminum