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Heliopan 40.5mm Circular Polarizer 'STANDARD VERSION' - SHOTT GLASS MPN: 740541

  • $ 7919
  • Save $ 118


The light loss of a polarizing filter varies between 1 and 1.5 F stops which, depending on camera type, can be manually or automatically corrected. HELIOPAN polarizing filters consist of a neutral color foil cemented between two plane parallel glass discs. The foil is constructed so that light rays can only pass in one plane. The polarizing filter is mounted in a calibrated rotating ring so the desired position and effect can be easily set. With an SLR one sees the result in the finder, with viewfinder type cameras one holds the polarizer in front of the eye and turns it to see the desired effect. Then with the assistance of the calibrated rim, which is on every HELIOPAN polarizing filter, it is easy to set the filter to the same position on the lens. If no effect is visible, the available light conditions cannot be polarized. In this case its use is not advisable.

Filter Properties At A Glance
Front Threads Yes
Accepts Snap In Lens Cap Yes

Filter Ring Depth (Less Threads)

8mm
Coating Mono Coated
Filter Factor 1-1.5 - Stops

http://www.thkphoto.com/products/hoya/images-pro1d/SP-PL-With.jpg    http://www.thkphoto.com/products/hoya/images-pro1d/SP-PL-Without.jpg

    With Circular Polarizer                  Without Circular Polarizer

http://www.thkphoto.com/products/hoya/images-pro1d/SP-PL-R-With.jpg    http://www.thkphoto.com/products/hoya/images-pro1d/SP-PL-R-Without.jpg

   With Circular Polarizer                  Without Circular Polarizer

Heliopan glass filters are made with glass from Schott (Zeiss)the world's finest optical glass supplier.

 

Heliopan glass filters are made exclusively with glass from Schott (Zeiss) the worlds 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! 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 coated. This means that the front and rear glass surfaces have coating applied to them.

 

Dyed In Mass Optical Glass

Precision Black Anodized Filter Ring

Anti Reflective Coating

Scratch Proof Metal Oxide Coating