The FotodioX WonderPana 6.6" Holder Bracket is a two-piece assembly designed to be used in combination with a FotodioX WonderPana FreeArc Core Unit, a WonderPana 145 Core Unit, or a WonderPana FreeArc Aluminum Step-Up Ring. A WonderPana Core Unit or a WonderPana FreeArc Aluminum Step-Up Ring with the WonderPana 6.6" Holder Bracket attached can then allow for the convenient use of two 2.5 to 4.0mm-thick filters measuring 6.6" wide, or one 2.5 to 4.0mm-thick filter measuring 6.6" wide along with one FotodioX 145mm 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 Core Unit or a WonderPana FreeArc Aluminum Step-Up Ring using the six included brass short-screws. Pre-tapped threaded inserts along the edge of a WonderPana Core Unit or FreeArc 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 6.6"-wide filter between them. The combined WonderPana Core Unit, or WonderPana FreeArc Aluminum Step-Up Ring, and WonderPana 6.6" Holder Bracket can then be attached to a compatible lens.

For WonderPana 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 the six brass short-screws for correct positioning of the WonderPana 6.6" 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 Core Units and WonderPana FreeArc Aluminum Step-Up Rings allows a WonderPana 6.6" Holder Bracket to be rotated 360°. This permits the use of graduated neutral density and other filters that are enhanced by varied positioning. While a WonderPana 145 Core Unit does not include a 360° rotating mechanism, eight pre-tapped threaded inserts all around its edge allows the WonderPana 6.6" Holder Bracket to be installed in 45° increments so that rectangular filters placed within it can be angled to the best approximate position relative to the subject in front of the camera.

The FotodioX WonderPana 6.6" 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 can be secured using the included brass long-screws. Pre-tapped threaded inserts along the outside of the holder bracket allow the long-screws to each apply pressure to a spring-loaded retainer within each filter slot. When a pair of the long-screws are used, the level of grip upon a rectangular filter can be varied, which 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.

Each FotodioX WonderPana Core Unit or WonderPana FreeArc Aluminum Step-Up Ring includes front filter threads, which allow a FotodioX 145mm round filter to be used along with this filter holder. If a 145mm round filter is used on the attached WonderPana Core Unit or WonderPana FreeArc Aluminum Step-Up Ring, the rectangular filter slot closest to the rear of the holder bracket becomes unavailable. The WonderPana 6.6" 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 Tokina AT-X 16-28mm f/2.8 Pro FX    WonderPana FreeArc Core Unit, Lens Cap    WonderPana 6.6" Holder Bracket    145mm Solid Neutral Density 3.0 Filter    1000x Filter Factor, 10-Stop    Darkens Entire Image    6.6 x 8.5" Graduated ND 0.9 Filter    Hard-Edged Line of Transition    Up to 8x Filter Factor, 3-Stop    Reduce Exposure in Selective Areas

• When used with a FotodioX WonderPana FreeArc Core Unit, a WonderPana 145 Core Unit, or a WonderPana FreeArc Aluminum Step-Up Ring, allows for the convenient use of two filters measuring 6.6" wide, or one filter measuring 6.6" wide along with one FotodioX 145mm round filter installed on a Core Unit or FreeArc Aluminum Step-Up Ring
• Provides two pairs of filter slots, a configuration that accommodates up to two 2.5 to 4.0mm-thick rectangular filters
• Allows up to two compatible rectangular filters to be rotated 360° when used with a FotodioX WonderPana FreeArc Core Unit or WonderPana FreeArc Aluminum Step-Up Ring
• When used with a WonderPana 145 Core Unit, allows up to two compatible rectangular filters to be installed in 45° increments so that a filter placed within it can be angled to the best approximate position relative to the subject in front of the camera
• Ability to vary grip on each installed rectangular filter to 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
• Lightweight, aluminum-alloy construction with a corrosion-resistant, black anodized finish for durability
• Rigid pouch included for storage and transport

Related Questions and Answers

Q: 1. I am parallely using cannon 16-35 and 17-40. will it work with these cannon lenses ?

A: Yes, it will work with a Canon 16-35 and 17-40. You just need to make sure that you purchase the correct adapter ring. The 17-40 requires a 77 mm adapter ring and the 16-35 f/2.8 II requires an 82 mm adapter ring and the 16-35 mm f/4 requires a 77 mm adapter ring.

Q: 2. Will this adapter work with the 100mm Format Hitech filters?

A: I believe the adapter will work with any 100mm filter as long as the filter is made of rigid material and not a thin film.

Q: 3. does this come with a case?

A: Yes.

Q: 4. I have ordered some 4 polyester CC filters, in snap holders. I am wondering if the plastic frames will slide into this holder? I know about the holder that uses a rubber band, but this holder would be good for other lenses + multiple filters.

A: The Lee foundation kit works with 2mm thick filters and you can get other guards that work with 4mm thick filters. If your CC filter holder is not thicker than 4mm you can get those other guides. But they cannot be wider than 4 inches on one side.The 4mm guides are at this link a href= http://bhpho.to/1BHprZI. target= _blank http://bhpho.to/1BHprZI./a

Q: 5. Hello, I am looking at this holder. I currently use the Conkin Z series with the Canon 16-35 f2.8 on a Mkiii, which is a 82mm thread. With the conkin I'm having issues with see the side of the holder from 16 to about 20-21mm. Will this holder alleviate that issue allowing me to shoot at 16mm without issue?

A: I'm using it with a Nikon 16-35mm lens with a 77mm thread and have no issues with vignetting at 16mm.

Q: 6. I have a Canon 24-105, 70-200 and Tamron 20-70 lens. Using full frame and APS-C Canon bodies. Is it possible to use an 82mm wide angle adaptor and just purchase a 82mm-77mm step down ring rather than buying two adaptors?

A: Wonderpana by fotodiox will solve all of your vignette problems.

Q: 7. Will this filter holder work with my Nikon 14-24mm lens with no cut-off? Thanks.

A: Youll need the Lee SW150 holder for your 14-24 mm lens. Many have opted for the 16-35 mm lens because the Lee 100 holder works fine with it.

Q: 8. I got this and I unscrewed the golden holder and can't put it back together. Do I have to buy a new holder????

A: Mine broke there also and couldn't get it fixed. Thought I was missing a spring or something.

Q: 9. If I get this kit and a 77mm adapter can I use a polarizing filter as well as ND filter like the little stopper ? which polarizing filter would work? Does it matter if you use the wide angle 77mm adaptor? I have a Canon 24-105mm lens and a Canon 300mm prime.

A: You need the 105mm Polarizing Lee Filter .... and both the ND Filter and the 105mm Polarizing Lee Filter can be used simultaneously with the Foundation Kit (and the Wide Angle 77mm adapter that fit with your lens opening). I got the answer from my friend Maurice who experimented the kit more than me.

Q: 10. Does it come with extra guides to add two filters or do you have to purchase more?

A: Unfortunately it does not. can only hold one filter