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• With the calibrations all that is necessary is to hold the filter up to the eye and rotate it until the desired effect is seen; note the position of any number on the rim, mount the filter on the lens and rotate the mount until the selected number is in the same position as when the filter was held to the eye  
• The effect can be seen through the viewfinder and changed by rotating the filter  
• The filter factor varies according to how the filter is rotated and its orientation to the sun  
• Made of black anodized brass stock and have so little rim in front of the lens (5.4 mm) that they will not vignette with lenses as short as 21 mm  
• Heliopan filters are "dyed in the mass" and ground, polished and coated to the highest standards of the German optical industry  
Type 
Circular Polarizer
• 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  
Size 
67mm Slim  
Grade 
Not Applicable  
Filter Factor 
Between 2.3 and 2.8 (approx. +1.3 stops)  
Multi-Coated 
Yes 16 Layer Multi-Coated  
Rotating 
Yes  
Effect 
Removes reflections and increases color saturation without affecting the overall color balance  
Application 
Nature, travel, outdoor photography  
Color Temperature 
Not Specified by Manufacturer  
Construction 
Schott Glass  
Front Filter Thread Size 
Not Applicable  
Front Lens Cap Size 
67mm  |