The Helix Variable Neutral Density Filter from PolarPro is designed for the Helix magnetic filter system and provides an exposure reduction of 2 to 5 stops. It darkens the entire image area, allowing a wider aperture or slower shutter speed than is usually possible. Increasing neutral density offers finer control in available shutter speeds or aperture settings for both still and video applications. Using a longer shutter speed makes it possible to increase blur to convey a sense of movement, or to dial in a video camera frame rate. Increased density also makes it possible to shoot using wider lens apertures, helping to isolate a subject from the background and increasing bokeh. This filter provides 2-, 3-, 4-, and 5-stop density increase. The front ring features a numbered scale of the stop values, and it also features haptic feedback to feel a click when reaching a number without looking at the ring. The ring features side knurling for a secure grip and to further enable fast and precise positioning.

Unlike other magnetic filter systems, the Helix system provides a completely secure connection using a magnetic connection plus a quarter-turn locking mechanism, making it lightning-fast to install and remove filters. This advanced locking system ensures filters stay locked in position, even during the most demanding shooting situations.

This 77mm Thread Plate for Helix Magnetic Filters from PolarPro is a magnetic adapter ring that mounts directly onto the filter threads of a lens. Once mounted, it is compatible with all of the filters in the Helix magnetic filter system. Providing a secure attachment with a magnetic connection plus a quarter-turn locking mechanism, the Helix system makes installing and removing filters lightning fast.

Made of durable brass, PolarPro thread plates are also compatible with the Helix Defender Plate, providing complete lens protection.

This 82mm Thread Plate for Helix Magnetic Filters from PolarPro is a magnetic adapter ring that mounts directly onto the filter threads of a lens. Once mounted, it is compatible with all of the filters in the Helix magnetic filter system. Providing a secure attachment with a magnetic connection plus a quarter-turn locking mechanism, the Helix system makes installing and removing filters lightning fast.

Made of durable brass, PolarPro thread plates are also compatible with the Helix Defender Plate, providing complete lens protection.