The Cavision 120 to 105mm Step-Down Ring snaps into the back mount of a 120mm matte box, allowing the matte box to be used with a lens with a front diameter of 105mm. This ring may be used in combination with others to step down to various lens diameters.

For Cavision & Select Other Matte Boxes    For Lenses with 105mm Outer Barrel    Split Ring Design    Plastic Construction

Related Questions and Answers

Q: 1. Can it fit on DSLR's?

A: Hi JoseIt depends on the lens / sensor combination you chose to use. My configuration works just fine; Sigma 17-50 2.8 zoom on Canon 60D (APC sensor) Wider lenses will produce vignetting. Beware that the weight of the Mattebox can stress the lens if it is not sturdy enough - consider buying railmount? (zoom lenses often protrude when in use)

Q: 2. Is there a step down to 95mm thread available?

A: We would have to recommend not using this on a lens that is larger than it's rear opening. We feel that vignetting would be far too likely.

Q: 3. can this matt box fits my sony z5u lens if I use a 72mm ring adapter?

A: I don't know that particular lens, whether it moves in and out much. However, I use the matte box with several prime lenses with 72mm IR filters mounted on the front.

Q: 4. Is this mattebox a clamp-on design or threaded mount?

A: The Cavision MB4510-H2EX 4x5.65 Hard Shade 16x9 Matte Box does not clamp on to lens thread adapters, it is designed to be mounted on 15mm rods using an non included rod block adapter, like the SmallRig 942 Super Lightweight 15mm LWS Rod Bracket v3 (BH #SM942). See: https://bit.ly/3nq2cVX

Q: 5. In the product description, with regards to compatibility, it states: ...and most DSLR cameras with small to medium size lenses . I am assuming this rig would be compatible with a Nikon D810 and a Sigma 50mm 1.4 Art lens?

A: This should work fine with the Sigma 50mm f/1.4 DG HSM Art Lens for Nikon F as well as the Nikon D810 as long as the camera is not on a grip.

Q: 6. Can I use my own screw on VND with this adapter?

A: Yes, The following unit features 77mm female threading on its front. To allow filters to be attached.

Q: 7. I am looking for the adapter ring to use this donut with my 4x4 Cavision matte box. Can anyone point me to that adapter?

A: Since Cavision Matte Boxes come in different sizes, please email us with your request stating which Matte Box you have so that we can get you the right adapter. provideo@a href= http://bhphoto.com target= _blank bhphoto.com/a

Q: 8. how to connect this matte box with 24mm rokinon cine lens?

A: These clamp onto the external diameter of the front of the lens - in this case 83mm diameter.

Q: 9. Does a Lindsey Optics Brilliant 4 x 5.65" Diopter Rota-Split Close-Up Lens fit in this matte box?

A: Yes, the Cavision 4 x 5.65" Matte Box Kit with French Flag & Step-Down Ring for 114mm Lens (B&H # CAMB45TF114) can accommodate the Lindsey Optics Brilliant² 4 x 5.65" +1 Diopter Rota-Split 50% Close-Up Lens (B&H # LI45651BRS) and similar such lenses designed to fit a matte box of this size in a single slot.

Q: 10. Would 2mm or 3mm filters fit in the metal trays?

A: Yes, the maximum thickness that can fit is 4mm.