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 Panasonic Lumix 7-14mm f/4.0 ASPH.    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    Soft-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. To use this kit with a Hasselblad 500CM with 80mm Planar lens , do I need a 60mm to 67mm adapter?

A: Yes, you will need to purchase adaptor for each lens size you plan on using.

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. can I use Cokin z-pro holder with lee filters? Cokin holder is much cheaper, what is the quality difference?

A: I have never tried. Lee is very heavy duty.

Q: 4. Can the filter holder support lenses with diameter 52mm as well as 105mm. Is there a adapter ring available for 105mm?

A: Both the LEE Filters Adapter Ring - 52mm, B&H # LEAR52, and the LEE Filters Adapter Ring - 105mm - for Long Lenses, B&H # LEAR105, may be used with the LEE Filters Foundation Kit (Standard 4x4 , 4x6 Filter Holder) (Requires Adapter Ring).

Q: 5. I want to use this with Nikon 24-70mm f/2.8 lens----is the 77mm wide angle adapter ring the one I need?

A: Yes, you will need the 77mm adapter ring.

Q: 6. Can I use Cokin Z Pro filters with the Lee Foundation kit?

A: The quick answer is yes, the Cokin filters will fit in the Lee Foundation Kit.

Q: 7. I have a Canon 17-40 f/4L with a 77mm lens diameter. If I get a 77mm LEE Adapter ring + this LEE Filter Holder I will be good to go? (obviously I will have to get the filters themselves as well).

A: Yes mate. You will be

Q: 8. will there be any vignetting when using a canon 16-35mm f4 on a full frame camera? thx

A: There will be no vignetting using this holder on that lens.

Q: 9. This holder fits the Canon EF 35mm f/1.4L USM Lens and the Canon EF 70-200mm f/2.8L USM Lens? I would need both adapter rings right? a 72mm and a 77mm.

A: yes, you will need the holder and separate adapter rings

Q: 10. Can one stack the system on a circular filter attached to your lens without vignetting?

A: Well, yes and no. On my Canon 16-35, I experienced vignetting at 16mm. But none at 18mm and beyond.. On my Zeiss Milvus 21 mm No vignetting noticed. So for me not such a big deal. But what is a major issue, and I believe Lee has recognized this by producing a lens hood of sorts is the terrible flare and reflections when the sun is overhead. In this type of light, the filter kit is unusable. So if you do decide to purchase the filter kit and landscape polarizer and adapter ring definitely also purchase the lens hood or filter cover or whatever it is. Cause you are gonna need it. For Sure.