The FotodioX WonderPana FreeArc XL Core Unit 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 14-24mm f/2.8 DG HSM Art    WonderPana FreeArc XL Core Unit    WonderPana 8.0" Holder Bracket    Holds 7.9"-Wide Filters    Holds Filters 2.0mm-Thick    Holds up to 2 Rectangular Filters    Up to 1 Rectangular and 1 Round Filter    Rotates 360° with FreeArc XL Systems    Anodized Aluminum-Alloy Construction    186mm Center-Pinch Snap-On Lens Cap

• 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. weather sealed with gasket or no?

A: As with previous Sigma's Art-series lenses, the entire lens housing is dust and splash proof, including the zoom and focus rings. Even its brass lens mount is weather-sealed.

Q: 2. HI! is this lens work for sony a7r iii?

A: Yes, this lens is compatible with the Sony A7RIII.

Q: 3. Is the loud noise normal when focusing?

A: The focusing on the Sigma 14-24mm f/2.8 DG DN Art Lens for Sony E is quiet due to the stepping motor installed in it.

Q: 4. Can this lens be used with the Leica CL?

A: The Sigma 14-24mm f/2.8 DG DN Art Lens for Leica L is compatible with the Leica CL Mirrorless Camera.

Q: 5. Is there any stabilization in the lens?

A: No this lens does not have any.

Q: 6. Can we use this Lense with Sony a7s mark 3

A: Yes this lens is compatible with the a7s III.

Q: 7. Will the Nisi 150mm filter kit for Sony 12-24 work with this lens?

A: Unfortunately not. This would only work with 85mm threaded filters.

Q: 8. How is the auto focus for video on this lens?

A: It offers very smooth and accurate autofocus in video.

Q: 9. hi , does this lens fit my Leica SL ?

A: Yes, the L-mount version of the Sigma 14-24mm f/2.8 DG DN will indeed work with the Leica SL cameras. :)

Q: 10. I see you recommend some filter kits in this thread. Do I understand correctly that you can use all filter sets that fit the DSLR version of Sigma 14-24mm f2.8 Art on this new lens as well?

A: This lens can use the same popular filter holders as the Canon EF, Nikon F and Sigma SA versions Sigma 14-24mm f/2.8 such as the NiSi S5 150mm Filter Holder Kit with Circular Polarizer for Sigma 14-24mm Art Lens, B&H # NIFH150S1424. https://bhpho.to/2lEciT4