The 143-136mm UMB-1 Matte Box Clamp-On Ring from Wooden Camera enables you to use your base or swing-away version of the UMB-1 Universal Matte Box as a clamp-on matte box with a lens with a front outer diameter of 136mm. The clamp-on ring is made from ABS plastic for a combination of strength and durability, and features a split ring design for a secure grip.

For UMB-1 Matte Boxes    For lens with 136mm Outer Diameter    Made from ABS Plastic    Split Ring with Baffles

UMB-1 Universal Matte Box Base and Swing-Away versions.

The split ring designs allows the clamp-on ring to compress while evenly distributing the clamping force on your lenses barrel.

Related Questions and Answers

Q: 1. Can I add an additional stage to this mattebox?

A: Yes you can add an additional stage by adding the filter tray

Q: 2. would this somehow work with Sigma 12-24mm F4 ART or 14mm F1.8 ART?

A: Not likely, due to the design of the lens, which includes a built in pedal type lens hood, which would restrict adding a clamping matte box.

Q: 3. Can I use this mattebox clamp on, with a 82mm polarpro circular VND?

A: I would make sure to use a clamp on adapter so that your lens and Polar Pro Variable ND does not interfere with the Misfit Atom.

Q: 4. Do you need the Rota Ring in order to use 138mm Diopters?

A: This comes with a rota ring included in the kit

Q: 5. Does it vignette with an A7SII + Sony 28-135mm in full frame? Which adapter should I use to clamp it on directly onto the Sony 28-135mm (105mm outer diameter)?

A: This matte box should be fine with a 24mm on a full frame camera such as the a7S II. To adapt this matte box from its 114mm to the 105mm of the lens, you need an adapter. This is the one adapter of those dimensions that we have. We have not tested it but it should work. Vocas 114mm to 105mm Adapter Ring for MB-255 B&H # VOSDR255105.

Q: 6. Is it possible to mount it on say 82mm or 86mm screw-in filter lenses like Sigma ART lenses?

A: Yes you can use the Misfit Atom with screw in adaptors please see the sizes below and they screw into the filter thread of the lens B1250.1070 82mm B1250.1071 77mmB1250.1072 72mm B1250.1073 67mmB1250.1078 95mm

Q: 7. Do I need to buy two filter holders if I want to be able to use the mattebox with filters or can I attach them directly to the mattebox?

A: From the B&H Overview regarding this matte box: You can securely insert up to two 4x4 , 4x5.65 , or a combination of those filters directly into the matte box without using a filter tray. A spring-loaded clamp at the top of the matte box secures the filters so they will not fall out unexpectedly.

Q: 8. Can the round filter be rotated 360 degrees?

A: But a polarizer only requires 90° of rotation to give you full adjustment.

Q: 9. Does it have a rotating filter stage for polarizing filters?

A: No, it does not, however, you can rotate the matte box itself.

Q: 10. Does it vignette with an A7SII + Sony 28-135mm? What adapter should I use to clamp it onto that lens (105mm outer diameter)?

A: Just updating this answer - it doesnt vignette the 28-135 and I found that the attachment protrusions for Sonys built-in hood interfere with a typical clamp-on adapter. However, it works perfectly with the 95 to 114mm screw-on adapter (Bright Tangerine but also other manufacturers) and the advantage is you can use a 114mm lens cover to protect the lens in transit instead of that Sony disposable coffee cup version that comes with the lens.