This Cavision 30.5-37mm Step-Up Ring enables the use of 37mm threaded filters on lenses with 30.5mm 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 40mm 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 30.5mm Filter Thread    For 37mm Filters    6mm Depth    40mm 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. What is the tread pitch of the filter?

A: The Sensei 86-95mm Aluminum Step-Up Ring has a 1.0mm thread pitch.

Q: 2. Is there a knurled version of this 77 to 95 mm step up ring ?

A: I didn't know; didn't buy it.

Q: 3. I have a 40.5mm lens and a 82mm nd filter, can I use a 49-82mm step up ring in between?

A: Sounds like you are planning to use two step up rings - one 40.5 to 49, and one 49 to 82. I don't know of any reason why you couldn't do this physically. I use a 40.5mm to 49mm step up ring on my a6000 using the 16-15mm lens and have not experienced any vignetting. I would think the 82 step up would be wide enough not to cause vignetting.

Q: 4. Will thisgive me a vignet if i use it on a sony 16-35mm lens and an 82mm polarizing filter?

A: I dont think so. As somebody said the sensor size could play a role, although it never happened to me.

Q: 5. 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: 6. 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: 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. 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: 9. Exactly what does this weigh?

A: Not a lot

Q: 10. If I used this step up ring, would it cause vignetting?

A: Unless you are using an extremely wide angle lens, you shouldnt experience vignetting with the 52-77mm Step-Up Ring.