This 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.

Variable 0.6 to 1.5 Optical Density    Darkens Entire Image Area    Reduce Shutter Speeds, Widen Apertures    Haptic Feedback Filter Ring Mechanism    For Helix Magnetic Filter System

Related Questions and Answers

Q: 1. Can you bring this as a personal item on a plane, or checked bag?

A: The PolarPro Boreal Backpack (Black, 50L) has external dimensions of 25 x 14.5 x 8". Most domestic flights have a carry-on size limit of 22 x 14 x 9". This bag would be to large for that. But best check with the airline before you fly, as this can vary by airline and specific flight.

Q: 2. Can you bring this as a personal item on a plane, or as a checked bag?

A: Most airlines limit the size of the personal bag to 22 x 14 x 9". Carry-on bag limits are 21.7 x 15.7 x 9". The PolarPro Boreal Backpack (Black, 50L) is 25 x 14.5 x 8", so it is too large and must be checked. Size limits do vary, so you need to check with your airline.

Q: 3. Will this fit a Nikon 14-24mm lens?

A: Polarpro does not list a Defender option compatible for use with the Nikon AF-S NIKKOR 14-24mm f/2.8G ED Lens on their compatibility list. The largest size they show on their website is the 114mm, while the Nikon AF-S NIKKOR 14-24mm f/2.8G ED Lens has an outer diameter of 131.5mm.

Q: 4. Does it come with a carry cover?

A: The PolarPro Pivot Shoulder Rig System comes with a storage pouch.

Q: 5. will the 114mm fit on the sigma 14mm 1.8 for canon?

A: No, PolarPro 114mm Defender Lens Cover BH #PODFNDR114 wouldn't fit the Sigma 14mm f/1.8 DG HSM Art Lens for Canon EF BH #SI1418CEF due to the shape of the lens.

Q: 6. Will this fit Xeen Cinema Lenses?

A: Yes it is compatible with all current Rokinon Xeen series lenses.

Q: 7. Will this hold a Sony FX9 with the Sony FE PZ 28-135mm f/4 G OSS Full-Frame Power Zoom Lens?

A: Yes, the Letus35 Helix 3-Axis Camera Stabilizer with Bluetooth/RC Modules and Encoders will hold the Sony FX9 with the Sony FE PZ 28-135mm f/4 G OSS Full-Frame Power Zoom Lens.

Q: 8. Rod spacing is not specified, But i stool want to know, is it 60mm? (15mm LWS Standard)

A: The PolarPro Pivot Shoulder Rig System follows the 15mm LWS(Light Weight Support) industry standard. The rods are 60mm apart on center.

Q: 9. I have a h&y 67mm-82mm Revo ring that measures 11cm in outerdiameter, would this fit?

A: If the outer diameter of your lens is 11 cm (which would be 110 mm), we cannot guarantee the PolarPro 114mm Defender Lens Cover would fit on your lens as it is designed for lenses that are 114mm in diameter. However, as it does have a bit of elasticity, it may be able to work for your usage needs. I would recommend as the above item may be returned within 30 days of the delivery date for a refund or exchange, you can purchase the item to check and see if it works on your equipment, and if not, you may return the item.

Q: 10. In several review videos it shows it comes with long rods, but in the specs it says it includes 3.9" rods. Can you confirm?

A: The PolarPro Pivot Shoulder Rig System's 15mm rods are actually 15.74" in length but they can be extended. Check the Pivot Shoulder Rig | Behind The Build video on our product page, at 36 seconds the mention the rods.