The FotodioX WonderPana FreeArc Core Unit for Tamron 15-30mm Lensesis 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 15-30mm Di VC USD/USD G2 or Di USD    WonderPana FreeArc Core Unit    WonderPana 6.6" Holder Bracket    Holds 6.6" Wide Filters    Holds Filters 2.5 to 4mm Thick    Holds up to 2 Rectangular Filters    Up to 1 Rectangular and 1 Round Filter    Rotates 360° with FreeArc Systems    Anodized Aluminum Alloy Construction    145mm Center-Pinch Snap-On Lens Cap

• 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. Will this fit Tamron 15-30 G2 version?

A: Yes this filter holder can also work with the Tamron 15-30mm G2 lens.

Q: 2. so will this work with to Tamron 24-70mm f2.8 g2 with 82mm filter threads and the nisi S5 Nikon 14-24 150mm filter kit?

A: Yes, the NiSi 82mm Step-Up Ring to S5 150mm Filter Holder Kit, will work with Tamron 24-70mm f2.8 g2 and the nisi S5 Nikon 14-24 150mm filter kit.

Q: 3. Are there any recommended ND filters for this lens? I'm using it on my Panasonic Gh5s with the metabones speedbooster.

A: Since the Tamron has a rear gel filter holder, perhaps the new Haida Rear Lens ND Filter Kit for Tamron SP 15-30mm f/2.8 Di VC USD Lens (https://bhpho.to/2XxAC8O)

Q: 4. Will a rear mount filter system like the one on this lens work with gradient gel filters (if those even come in a gel equivalent)?

A: In all our years of cinematography we have not heard of a rear gel grad filter ever being available. It is our opinion that it would not be practical. In order to fully utilizes grad filters, the user needs to position them precisely. That position may be higher or lower than the center of the frame. Also, it could be at an angle as well. This would be very difficult to manage in a rear gel. The clear solution is using 100mm filters in a holder such as NiSi S5 150mm Filter Holder Kit with Circular Polarizer for Select Tamron 15-30mm Lenses BH NIFH150T1530.

Q: 5. Will it work with NiSi S6 150mm Filter Holder Kit for Nikon 14-24mm? It is listed as compatible for S5/S6 at Amazon, but here only S6 is listed.

A: Yes, the NiSi 82mm Step-Up Ring to S5 150mm Filter Holder Kit for Nikon 14-24mm Lens and S5 150mm Filter Holder Kit for Select Tamron 15-30mm Lenses can work with the S6 holder as well. This will work with the NiSi S6 150mm Filter Holder for Nikon 14-24mm.

Q: 6. Can this be used on other S5 filter holders? I have the S5 for the Fuji 8-16mm lens and would like to use the S5 with my other lenses that have 77mm filter thread.

A: For Fuji 8-16mm you would need , NiSi S5 150mm Filter Holder Adapter Ring for FUJIFILM 8-16mm Lens

Q: 7. What is the quality of the sunbursts that you get with this lens?

A: The sunburst are very good when using an aperture of f/11 or smaller.

Q: 8. Does this ring work with the older 150mm NiSi filter holder for the Tamron 15-30mm lens (BH product #NIFH150TAM)?

A: Yes it is compatible.

Q: 9. Does this adapter work with other S5 filter holders? I have the S5 for the Fuji xf8-16 and would like to use it on my other lenses with 77mm filter threads.

A: Yes, this adapter will work on the Nisi S5 Holder for the Fuji XF 81-6mm lens.

Q: 10. Where can I get a replacement lens cap for this lens?

A: I'm sorry, we no longer carry that cap, as it has been discontinued by Tamron.