This Cavision 37-49mm Step-Up Ringenables the use of 49mm threaded filters on lenses with 37mm filter threads. The 6mm depth enables this ring to fill the gap between the lens and the back of select rod-mounted matte boxes, helping to keep reflections from hitting your lens. The step-up ring has a 52mm outside diameter for use with clip-on matte boxes. It features a lightweight aluminum alloy construction with a black anodized finish.

Use Alone or with Select Matte Boxes    Adapts Lens with 37mm Filter Thread    For 49mm Filters    6mm Depth    52mm Outside Diameter    Anodized Aluminum Construction

Use alone or with select matte boxes

This adapter ring features a depth of 6mm, suiting it for reflection prevention use with rod-mounted matte boxes

Lightweight, durable anodized aluminum construction

Related Questions and Answers

Q: 1. 49 mm is a common thread size for Sony and mft lenses, so I think the small 37mm is also a mft and small bayonet lenses, so, I think it's good to step for this kind of lenses

A: Is this a question or a statement?

Q: 2. Can these be used with the Lee Filter Holder system for Rectangular Filters?

A: I just used filters w step rings nothing more. Sorry, I don't know...

Q: 3. can I use a 82mm series 9 non threaded filter on this step up ring?

A: Unfortunately, we have not made use of this ring yet and cannot give any advice on it yet. Apologies

Q: 4. Exactly what does this weigh?

A: Not a lot

Q: 5. If I want to go from a 37mm lens to a 77mm filter would I stack all these rings together?

A: It is possible, however I would advise you to try using as few rings as possible to avoid vignette. As well, you will need to make sure that the filter you are using is absolutely clean to avoid focusing issues.

Q: 6. For 27mm to 37mm what is the inner diameter (on 27mm side)?

A: I don't know the answer.

Q: 7. What is the thread pitch on this step-up ring?

A: Unfortunately we do not have the measurement of the pitch to provide you with. I contacted the manufacturer and they stated it is within the common pitch of your major brand filters we carry (Hoya, Tiffen, B+W etc).

Q: 8. I need a step up ring to use 72mm filters on a 77mm lens. Is itemshown fit my need? Thanks

A: You will actually need a step down ring- this particular ring will enable you to use 77mm filters on a 72mm lens. The correct item you need is the Sensei 77mm-72mm step-down ring: http://bhpho.to/1sDgEm6

Q: 9. What is the thread pitch for the 39mm side of the Sensei PRO 39-52mm Aluminum Step-Up Ring?

A: 0.75mm

Q: 10. Is this compatible with the fuji 23mm f/2 wr lens?

A: No it is not. the FUji 23mm F/2 WR lens has a 43mm filter thread you will need a step up ring that matches that (such as a 43-49mm)