The Sensei PRO 39-77mm Aluminum Step-Up Ring permits the use of 77mm threaded filters on lenses with 39mm filter threads. It has large side knurls to provide a more textured grip when mounting or removing it from a lens. This step-up ring features a lightweight aluminum alloy construction with a corrosion-resistant, matte black, hard-anodized finish for durability and to minimize reflections.

Use 77mm Filters on 39mm Lens    Knurled Sides for Firmer Grip    Matte Black Finish Minimizes Reflections    Corrosion-Resistant Hard Anodized Finish

Related Questions and Answers

Q: 1. Bowens S mount?

A: This softbox does not come with a speedring. You will need to buy the type that matches your lights needs.

Q: 2. I would be interested to hear how this Manfrotto plate compares with the Peak Design Dual plate. Specifically which is more secure on the RC2? Anyone use or try both of them?

A: These both work equally well on an RC2 connection. Though the Peak Design would work better with Arca-Type systems and it would work with their Capture Camera Clip. If using Manfrotto Arca systems get the Manfrotto. If using other manufacturer Arca systems it is best to get the Peak Design.

Q: 3. Is QS-39 plate compatible with the Sirui L-205 head?

A: No, but most any Arca Swiss plate ought to work with the L-205. Here is the recommended plate for the Sirui. Sirui TY70-2 Arca-Type Pro Quick Release Plate B&H # SISUTY702

Q: 4. Will this fit a Gitzo 100th Anniversary Edition tripod (which is basically a Gt1545 Series 1 Traveler, I think) with a Black Rapid Fasten-R?

A: This plate is compatible.

Q: 5. Does this fit on Vanguard Tracker-S head?

A: Yes

Q: 6. Will this fit any head that the 200PL fits? Specifically, the #390 head on an old Bogen Manfrotto 3405 Junior tripod.

A: Yes, the Manfrotto 200PL-Pro Aluminium Plate will fit the Bogan 390 Head.

Q: 7. Will it fit a manfrotto 190go! ?

A: The 200PL-Pro (and other 200PL plates from Manfrotto) should work with all the Manfrotto heads that typically come with the 190go! series of tripods. The 190go! is actually referring to the model of the legs and not the tripod head, so in order to make sure it'll work with your head, please refer to the model number of your head (494, 496, BHQ2, etc. will all work with this plate) to confirm.

Q: 8. Who makes a grid for the rotalux octabox?

A: You can get Elinchrom Rotalux Octabox Rotagrid (39") B&H # EL26777

Q: 9. I have a Vanguard VT-548B. Would this plate work with it?

A: This quick release is not compatible with the VT-548B. This tripod uses the QS-03 quick release plate, which has unfortunately been discontinued by the manufacturer.

Q: 10. Will QS-39 fit an old Vanguard QS-03 ?

A: QS-03 is not a tripod or head but a number for a qr plate that has been discontinued and no longer available.