Use this ARRI Focus Ring WCU-4 UMC-4 0.2m Close-Focus Markto save time when focus-mapping your lens with a WCU-4 or UMC-4 control hand unit. Pre-marked in meters from a close-focus of 0.2m to infinity, a non-permanent marker may be used to apply additional, temporary focus marks.

Fits WCU-4 or UMC-4 Knob    Pre-Marked Focus Distances    Marked 0.2m Close-Focus to Infinity

Related Questions and Answers

Q: 1. It reads the item is 12" long, does it only make one ring or can you make more?

A: This is 12" long, which is enough for a 4" diameter lens size. This really is only for a single lens.

Q: 2. Why is it labeled photo electric?

A: That is just branding. 7artisans has a whole lineup of all manual lenses called Photoelectric. Same goes with this adapter. It is just a brand name. It does not describe the product.

Q: 3. Does this have electrical connections to give info to the camera about focal length, aperture etc?

A: No, the Voigtlander VM-Z Close Focus Adapter does not have electronic contacts. You will need to change the aperture directly on the lens.

Q: 4. "The black 7artisans Lens Focus Ring Tab is designed to fit select lenses. " That's nice. What are those lenses?

A: This product is meant for use with the various lenses made by 7artisans: https://bhpho.to/2LjB8CE

Q: 5. Is it long enough for Nikon 58mm 0.95 Noct?

A: The CINEGEARS Customizable Geared Focus Ring (B&H# CI1401), in its official sizing, is 0.02 of an inch too small for the Nikon NIKKOR Z 58mm f/0.95 S Noct Lens (B&H# NIZ5895). However, given how close that is, you may be able to get it to fit, especially if the ring is placed in very hot (but not boiling) water for a few seconds prior to useage. However, as an alternative, the Tilta DSLR Lens Follow Focus Adapter (B&H# TIFRT03) will fit the Noct: https://bhpho.to/3W0Ka8l

Q: 6. How does this compare to the Fujifilm adapter? What would be the 35mm equivalent of a 50mm noctilux-M

A: The Voigtlander VM-X Close Focus Adapter II for FUJIFILM X and the FUJIFILM M Mount Adapter for X-Mount Cameras are excellent adapters. The FUJIFILM adapter does not have the helicoid element that enables close focus. The Leica Noctilux-M 50mm Lens will have an angle of view of a 75mm lens on a FUJIFILM X camera.

Q: 7. What is the amount of extension travel provided by the close focus helicoid? Example: the competing Voigtlander product says it provides 5.5 mm. How many mm does this product allow?

A: 7artisans, does not list the extension travel provided by the close focus helicoid on the 7artisans Photoelectric Close Focus Adapter for Leica M Lens to Nikon Z Camera.

Q: 8. Are these compatible with the Arri SXU-1 (Single Axis Unit)?

A: Yes it is. This can be used with B&H # ARSXU1 as well.

Q: 9. Is this compatible with the pre-ASPH Leica Summilux 35mm M mount lens?

A: Yes, the Voigtlander VM-X Close Focus Adapter II for FUJIFILM X will allow the Leica Summilux-M 35mm lenses to mount on a Fujifilm X-mount camera.

Q: 10. Will this fit on the Redrock Micro Deluxe Matte Box?

A: Yes. B&H # (this item) ARK2.47190.0 will fit in a Redrock Micro Deluxe Matte Box the Matte Box has a maximum lens opening of 142 mm. https://www.bhphotovideo.com/bnh/controller/home?O=productlist.jsp&A=details&Q=&sku=672413&is=REG&fromDisList=y