K&F Concept QBM-NIK Z – Rollei QBM Lens to Nikon Z Mount Adapter K&F Concept

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The K&F Concept QBM-NIK Z adapter mounts lenses with the Rollei QBM mount on cameras with the Nikon Z mount. It is purely mechanical, with no electronic contacts: focusing is done by hand on the lens and the aperture is set with the lens aperture ring, while infinity focus is retained. The all-metal adapter is precisely machined and has an anti-reflection finish inside.

Rollei QBM lenses on Nikon Z bodies

With the QBM-NIK Z adapter, Rollei QBM lenses can be used on a modern Nikon Z body with everything it offers – a viewfinder with magnification for precise manual focusing, sensor stabilisation if the body has it, and current recording formats. The length of the adapter matches the difference in flange distance between the two systems, so the lens focuses across its whole range, all the way to infinity.

Solid metal construction

The adapter body is made of aluminium alloy and the mount of copper, which will not wear the lens mount. Precise machining ensures a firm connection without play. The inner walls have an anti-reflection finish that reduces reflections inside the adapter. A red dot shows how to align the adapter with the mount, making mounting and removal quick and accurate.

Manual focus and aperture

The adapter has no electronic contacts and the camera does not recognise the lens – autofocus, aperture control from the body and lens data in EXIF do not work. Focus with the ring on the lens; magnification or focus peaking in the viewfinder makes precise focusing easier. The aperture is set with the aperture ring on the lens; lenses without an aperture ring cannot be stopped down with this adapter.

First use

Before the first shot, enable shutter release without a lens in the camera menu (on Sony “Release w/o Lens”, a similar option on other brands). Otherwise the body will not treat the adapter without contacts as an attached lens and will not release the shutter.

Compatible cameras

Nikon Z 7, Z 7II, Z 6, Z 6II, Z 5, Z 50 and other bodies with the Nikon Z mount.

• K&F Concept QBM-NIK Z adapter
• Adapter storage box

• Lens side: Rollei QBM
• Camera side: Nikon Z
• Type: mechanical, no electronic contacts
• Focusing: manual
• Aperture: with the lens aperture ring
• Infinity focus: yes
• Material: aluminium alloy, copper mount
• Interior: anti-reflection finish
• Designation: QBM-NIK Z
• Order code: KF06.493