The FotodioX WonderPana 8.0" Holder Bracket is 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. HI! is this lens work for sony a7r iii?

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

Q: 2. is the hood removable?

A: No. The hood is integrated into the lens body.

Q: 3. How does the rear filter work? Is there a front filter thread?

A: You must cut gel filter to fit the rear holder. It must be dust and scratch free or the sensor will pick those up. Since you cannot adjust the rear filter, grads or Polarizers are not normally used. Basically you are limited to ND's. Here are the available gel filters. https://bhpho.to/2XIaTYY Like most any extreme wide angle lens, the front element is so bulbous, a screw-in filter is not possible. What should be available soon from the main filter manufacturers such as Lee, NiSi, and FotoDiox is a filter holder that will take 150mm rectangular filters.

Q: 4. Good choice for landscape w/ A7R IV? and 61mp?

A: Yes Sigma 14-24mm f/2.8 DG DN Art Lens for Sony E is very sharp and a great option to use with high resolution 61 MP sensor of the A7RIV.

Q: 5. 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: 6. Does it avoid any vignetting?

A: The Haida M15 Kit for Sigma 14-24mm f/2.8 DG DN Art Lens (Sony E- and Leica L-Mount) will not vignette on the Sigma 14-24mm f/2.8 DG DN Art Lens for Sony E or Leica L cameras.

Q: 7. This looks to be the same 14-24 art made for canon and Nikon a year ago...except now its for the e mount. Is this correct?

A: The lens element formula is different: One FLD Element, Five SLD Elements. The Canon and Nikon: Three FLD Elements, Three SLD Elements.

Q: 8. For filters, what holder do we use for this lens?

A: You can use one of these filter holder kits https://bhpho.to/2Yl9KHa.

Q: 9. Is this lens parfocal?

A: No, the Sigma 14-24mm f/2.8 DG DN Art Lens for Sony E is not a parfocal lens.

Q: 10. What Filter Size fits this lens? Do 67mm filters fit?

A: Unfortunately it will not. This lens does not have a filter thread, 67mm or other threaded filters will not fit this lens.