The FotodioX WonderPana FreeArc XL Kit for Sigma 14-24mm Art Lensis a two-piece assembly designed to be used in combination with a FotodioX WonderPana FreeArc XL Core Unit or a WonderPana XL Aluminum Step-Up Ring. Attaching the WonderPana 8.0" Holder Bracket to a WonderPana FreeArc XL Core Unit or a WonderPana XL Aluminum Step-Up Ring can allow for the convenient use of two 2.0mm-thick filters measuring 7.9" wide, or one 2.0mm-thick filter measuring 7.9" wide along with one FotodioX 186mm round filter behind it.

Use of this holder bracket is easily accomplished by separately attaching its two assembly pieces to opposite sides of a WonderPana FreeArc XL Core Unit or a WonderPana XL Aluminum Step-Up Ring using six of the eight included brass short-screws. Pre-tapped threaded inserts along the edge of a WonderPana XL Aluminum Step-Up Ring accommodate those screws and ensure correct positioning of the two assembly pieces so that they are positioned parallel to each other and can hold a 7.9"-wide filter between them. The combined WonderPana XL Aluminum Step-Up Ring, and WonderPana 8.0" Holder Bracket can then be attached to a compatible lens.

For WonderPana FreeArc XL Core Units that consist of a rear lens collar and a front filter holder, pre-tapped threaded inserts along the edge of the front filter holder accommodate six of the eight brass short-screws for correct positioning of the WonderPana 8.0" Holder Bracket's two assembly pieces. Once the holder bracket and a front filter holder are combined, and the separate collar has been slid over the rear of a compatible lens until it has achieved a secure fit, the front filter holder with the attached holder bracket can be screwed onto the front of the installed rear lens collar.

After being fitted onto a compatible lens, the bearing design of the WonderPana FreeArc XL Core Unit allows a WonderPana 8.0" Holder Bracket to be rotated 360°. This permits the use of graduated neutral density and other filters that are enhanced by varied positioning.

The FotodioX WonderPana 8.0" Holder Bracket provides two pairs of filter slots, a configuration that accommodates two compatible rectangular filters. For each rectangular filter that is placed within one of the holder bracket's slots, its position is secured by integrated guides within each slot. These guides apply pressure along both sides of a filter that is sufficient to hold it in place, but permits movement of that filter. This can complement the use of graduated filters whose effect can be adjusted to better suit changing lighting conditions or creative demands by sliding them up or down within a filter slot.

The WonderPana 8.0" Holder Bracket features a lightweight, aluminum-alloy construction that has a corrosion-resistant, black anodized finish for durability. A rigid pouch is included for storage and transport.

For Sigma 14-24mm f/2.8 DG HSM Art    WonderPana FreeArc XL Core, Lens Cap    WonderPana 8.0" Holder Bracket    186mm Solid Neutral Density 1.2 Filter    16x Filter Factor, 4 Stops    Darkens Entire Image    7.9 x 10.2" Graduated ND 0.6 Filter    Up to 4x Filter Factor, 2 Stops    Reduce Exposure in Selective Areas    Soft-Edged Line of Transition

• When used with a FotodioX WonderPana FreeArc XL Core Unit or a WonderPana XL Aluminum Step-Up Ring, allows for the convenient use of two filters measuring 7.9" wide, or one filter measuring 7.9" wide along with one FotodioX 186mm round filter installed on a WonderPana FreeArc XL Core Unit or WonderPana XL Aluminum Step-Up Ring
• Provides two pairs of filter slots, a configuration that accommodates up to two 2.0mm-thick rectangular filters
• Allows up to two compatible rectangular filters to be rotated 360° when used with a FotodioX WonderPana FreeArc XL Core Unit
• Integrated guides within each filter slot apply pressure along both sides of a filter that is sufficient to hold it in place, but permits movement of that filter, complementing the use of graduated filters whose effect can be adjusted to better suit changing lighting conditions or creative demands by sliding them up or down within a filter slot
• Lightweight, aluminum-alloy construction with a corrosion-resistant, black anodized finish for durability
• Microfiber cleaning cloth included, plus a rigid pouch for storage and transport

Related Questions and Answers

Q: 1. Hi, will this fit the Canon EF mount version of this lens? Thx

A: Yes, Sigma Lens Cap for 14-24mm f/2.8 DG HSM Art Lens would fit the different versions of this lens. The only phisical difference between the lenses is the lens mount.

Q: 2. Does the Sony E mount version have the rear filter holder? Or is it only on the Canon L?

A: This version of the lens with the Sony E mount has the rear filter holder as a standard accessory.

Q: 3. is the diameter of this lens ring 85mm?

A: The focus ring is approximately 85mm.

Q: 4. Will this lens work with Nikon D810?

A: No, it will not. You're looking for the version made for Nikon F-mount cameras, here: https://bhpho.to/3e3khk9

Q: 5. Do I need to buy another lens ring to fix this filter? This adapter is immediately attached to the lens or you need to buy something else? What is included with this filter?

A: What you see is in the photos is all you need if you want to use the polarizer. In the Box: FotodioX 186mm Slim Circular Polarizer Filter Filter Pouch Limited 2-Year Warranty FotodioX 186mm Center-Pinch Snap-On Lens Cap for Select WonderPana Systems & Filters Limited 2-Year Warranty WonderPana FreeArc XL Core Unit for Sigma 14-24mm f/2.8 DG HSM Art Lens Limited 2-Year Warranty If you want to use the square or rectangular filters, then you will need the brackets. Click on the link below to view; https://bhpho.to/32VgMWY

Q: 6. Will it work with 100mm filter holders?

A: The Sigma 14-24mm f/2.8 DG DN Art Lens is to wide a lens to work with 100mm filters. One can use 150mm filters with the NiSi S6 150mm Filter Holder Kit with Pro CPL for Sigma 14-24mm f/2.8 DG DN Art, BH #NIS6HCPPS14S (https://bhpho.to/3r8grOc).

Q: 7. I see the weight is 28.04 oz / 795 g. Is it okay for the a7R3 mount to use on a tripod and walk around with it on the tripod?

A: That's relative, it's how you hold the tripod. If you hold the tripod near the head, and you are mindful of what you are carrying nothing will hapen to the camera, lens or the tripod.

Q: 8. Is there anyway to attach an ND filter on this lens?

A: Aside from using cut gelatin filters in the included rear filter holder, you can also use the NiSi S5 150mm Filter Holder Kit with Circular Polarizer for Sigma 14-24mm Art Lens, B&H # NIFH150S1424, which is able to accept 150mm ND filters that are 2mm thick. https://bhpho.to/2RkN8VO

Q: 9. Does this lens use a usb hub for firmware updates?

A: At this point and time, there is no Sigma USB Dock for Sony E Lenses.

Q: 10. Is the focus mechanism fly-by-wire or are focus points always the same, allowing for more accurate manual focus?

A: This lens is focus by wire.