Heliopan Glass Camera filters have a lifetime warranty.
Heliopan glass filters are made exclusively with glass from Schott (Zeiss) the world finest optical glass supplier. Heliopan filters are "dyed in the mass" and ground, polished and coated to the highest standards of the German optical industry. All Heliopan screw in type and series size filters are mounted in precision black anodized brass rings to eliminate binding or cross threading and to ensure optimal alignment. The care, quality and performance of Heliopan's filters make them simply the world's finest filters! 

Heliopan Standard Coated Filters
Each Heliopan filter has an anti reflective coating, scratch proof metallic oxide coating on each surface. This Special hard coating reduces reflections by approximately 50%.  Heliopan filters are referred to as double coat. This means that the front and rear glass surfaces have coating applied to them.

Heliopan SH-PMC Multi Coated Filters.. The SH-MC (Super High- Tech Multi Coating) consists of 7 layers of coating on each side of the glass. The SH-PMC Coating will reduce reflections in the visible area of the spectrum to a minimum in your image. 

Most special effect filters such as soft focus, cross, fog and Softars are not coated.

Heliopan Polarizer rings are the best of all the manufacturers we sell. They are precision machined that rotate very smoothly. Heliopan Polarizer’s also having a scale engraved on the ring, which is very helpful when used on cameras with non through the lens viewing systems. The scale allows you to look at your scene through the polarizer. Make a mental note of the scale settings attach the filter to the camera and readjust to your original settings when you view the subject to be photographed.