Heliopan Polarizing Filter 8018 | Circular | PMC Coated
For more vibrant colors and to suppress reflections on non-metallic surfaces
- circular polarizing filter
- filter type 8018
- best optical glass
- PMC coating
- perfect surface quality
- color-neutral light attenuation
- standard brass filter mount with front thread
- mount height: 6.5 mm
- very scratch-resistant
- manufactured in Germany
Why a Polarizing Filter?
Natural light travels in a straight line in wave form in all directions. Pure sunlight is polarized and has high color purity. When passing through the atmosphere, part of it is scattered, which overlays all colors as a blue-gray haze. This component can often be reduced or prevented with polarizing filters. If light also falls at a shallow angle of about 35 degrees on a reflective surface, such as water, glass, plastics, paints (except metallic surfaces), the light is reflected and polarized. When a properly oriented polarizing filter is used, the reflections are absorbed, and the pure colors can reach the film or image sensor. Water surfaces become transparent, the blue tint from sky polarization is dampened, and the colors become much more vibrant and richer.
The Heliopan polarizing filters are delivered in a rotatable mount with a numbered ring, allowing the desired position and effect to be easily set for any camera type.
Tip: To achieve optimal results, one should stand at a 90° angle to the sun.
A neutral gray inherent color and the use of plane-parallel optical glasses guarantee optimal image results. The glasses are absolutely plane-parallel ground. This ensures uniform light refraction, which guarantees lossless sharpness.
Technical Details
Material: Brass, Glass
Polarizing filter type: Circular
Coating: PMC multi-coating (8 layers)
Build height: 6.5 mm
Exposure extension: approx. 2.3 to 2.8 stops
High-Quality Brass Mount with Front Thread for Attaching Another Filter
The filter has a high-quality brass mount. The mount is extremely stable and very precise. Additionally, brass offers better sliding properties than, for example, aluminum. Thanks to all these properties, the filter can be screwed on and off very smoothly. The mount is matte black to avoid reflections. It also has a front thread for attaching another filter, a lens hood, or a lens cap with a locking mechanism.
Heliopan PMC Multicoating
Reflection on glass/air surfaces is one of the main causes of contrast loss in lenses, which can make demanding photography impossible in extreme cases. Therefore, lens manufacturers put enormous effort into coating their lenses. This quality chain should not be broken by using a filter with inferior coating. The broadband anti-reflection coating, consisting of eight layers on each side, not only reduces reflection in the visible light range to almost zero percent, but it is also water and dirt repellent. This makes it significantly more robust against damage and easier to clean than a front lens.
