Amazon.com : B + W Circular Polarizer Kaesemann - Standard Mount (F-PRO), HTC, 16 Layers Multi-Resistant Coating, Photography Filter, 58 mm : Electronics
Polarizing filters test - B+W Slim KSM C-POL MRC 72 mm - LensTip.com
B+W 77mm KSM C-POL Slim MRC filter. | eBay
Polarizing filters test - B+W Slim KSM C-POL MRC 72 mm - LensTip.com
B+W Slim Filter 77mm C-POL CIRCULAR-POL S03 16930 Made in germany [EXCLLENT] | eBay