Heliopan 39mm Slim Mount Wide Angle Circular Polarizer Filter

Under the right conditions, the 39mm Slim Mount Wide Angle Circular Polarizer Filter can significantly enhance your photography experience. This filter, which is color neutral, broadens the scope of possibilities for both black and white and color film photography.

Unlike in black and white photography, color photography doesn't allow for contrast or color saturation adjustments using colored filters, as this would alter the colors in the photo. However, this polarizing filter can help manage these aspects. Natural light, which spreads in all directions in a wave form, is polarized and possesses high color purity. As it passes through the atmosphere, some of it scatters, resulting in a blush gray haze over all colors. This effect can be minimized or even eliminated with the use of our polarizing filters.

Moreover, when light falls at an angle of approximately 35½ onto a reflective surface such as water, glass, or plastic, it becomes reflected and polarized. With a properly oriented polarizing filter, these reflections are absorbed, allowing the true colors to reach the film. This results in transparent water surfaces and more saturated clouds.

The light loss of a polarizing filter can vary between 1 and 1.5 F stops, which can be manually or automatically corrected depending on your camera type. Our 39mm Slim Mount Wide Angle Circular Polarizer Filter is constructed with a neutral color foil cemented between two plane parallel glass discs. This design allows light rays to pass in only one plane.

The polarizing filter is mounted in a calibrated rotating ring, enabling easy setting of the desired position and effect. With an SLR, you can see the result in the finder, while with viewfinder type cameras, you can hold the polarizer in front of your eye and turn it to see the desired effect.

The filter is also equipped with a calibrated rim, making it easy to set the filter to the same position on the lens. If no effect is visible, it means the available light conditions cannot be polarized, and in such cases, the use of the filter is not advisable.

There are two types of polarizers: linear and circular. The circular type is required for camera systems where the built-in light measuring system uses light that has passed through the mirror via a beam splitter. The circular polarizer has a second component, a 1/4 wave plate in its construction, which sets the polarized light in rotation and allows it to pass without interruption through the measuring system for accurate measurements. Circular polarizers are also recommended for auto focus lenses in video cameras.

To ensure the longevity of your 39mm Slim Mount Wide Angle Circular Polarizer Filter, avoid overheating. This filter is a valuable tool for photographers aiming to capture the world in its true colors.