The FotodioX WonderPana FreeArc Kit for Tokina 10-17mm Lens Filtersis 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 AF 10-17mm f/3.5-4.5 Fisheye    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 0.6 Filter    Soft-Edged Line of Transition    Up to 4x Filter Factor, 2-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. Does this provide a 180-degree diagonal field of view for a Canon APS-C sensor?

A: When the Tokina 10-17mm f/3.5-4.5 AT-X 107 AF DX Fisheye Lens for Canon is zoomed at 10mm it does give you a 180-degree diagonal field of view on a Canon APS-C sensor camera.

Q: 2. is this lens compaitble with my black magic 6k? If so, how much crop can I expect?

A: This is an EF-mount APS-C/Super35mm format lens. Used on your BMPCC6k and depending on the resolution you use, you would have a minimum of 1.558x crop factor (using 6K full sensor readout), meaning this would be a 15.58mm-26.49mm equivalent lens.

Q: 3. This len is compatible with nikon D7200?

A: Yes! I use it on my D7200. I love it!

Q: 4. Im beginning to shoot indoor real estate work and Im looking at this as well as the Tokina 11-20mm F2.8. How do the two compare in image and build quality?

A: The 11-20 would probably be better for indoor real estate shooting, as it is rectilinear, while the 10-17 is an actual fisheye lens.

Q: 5. will this lens work with the nikon d500 or nikon d780?

A: These are the cameras the Tokina 10-17mm f/3.5-4.5 AT-X 107 DX AF Fisheye Lens for Nikon F is compatible with: Nikon D500 Nikon D7100 Nikon D7500 Nikon D750 Nikon D7200

Q: 6. will this fit on the oners, already with sticky lens guards installed, without being in the stitch line?

A: The Freewell ND1000 Camera Lens Filters for Insta360 One R (10 Stops, Pair) is not compatible with the Intsa360 One RS.

Q: 7. Will this filter adapter fits that Tokina Opera 16-28 mm?

A: When it comes to ultra wide filter adapters, we go by the rule they will only fit the lens in their name. We will have to say no at this time.

Q: 8. "Will the posted version of the 10-17 accept screw in filters and if so what size?"

A: No, the Pentax HD DA Fisheye 10-17mm f/3.5-4.5 ED Lens does not allow for standard thread-on filters.

Q: 9. Is the lens hood removable?

A: No the lens hood is not removable

Q: 10. Will this lens work with the D800? Looking to do family beach photos

A: Although this lens will physically fit, it is a DX lens that was designed for cropped sensor cameras. If used on the D800 there would be vignetting. The D800 is a full frame sensor camera and FX lenses should be used.