Can Micro Four Thirds-mount Rokinon Cine DS lenses be used on a full-frame camera?
Asked 11/10/2021
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I have several Rokinon Cine DS lenses that were bought in Micro Four Thirds (MFT) mount for use on a Panasonic GH5. The lenses themselves are described as full-frame designs, but I’m now considering moving to a full-frame camera body.
Can these MFT-mount versions be adapted to a full-frame camera, or would I need to replace them? I haven’t been able to find common adapters such as MFT-to-L mount or MFT-to-Canon RF, so I’m wondering which full-frame mounts, if any, are actually compatible.
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
4y ago
2 Answers
4
If you really want, you can adapt your lenses to Sony E-mount and Nikon Z-series bodies. The problems that must be overcome when adapting lenses are:
- Sensor coverage (size of the image circle). Since the optics of your lenses were originally designed to cover full frame, they should continue to do so despite being fitted with a mount that is associated with crop sensors.
- Lens settings (aperture, focus). This is typically a problem with electronically controlled lenses. Since most Rokinon lenses are controlled manually, this probably doesn't apply to your lenses.
- Flange focal distance. The camera you adapt your lenses to must have a shorter FFD than the lens to make room for the adapter. The FFD of MFT is 19.25mm. Sony E mount (18mm) and Nikon Z mount (16mm) are full-frame mounts with shorter FFD.
- Commercial availability of adapters (or ability and willingness to make your own). Adapters to fit MFT lenses to Sony E mount (NEX) and Nikon Z mount are commercially available. It may be helpful to search for the phrase "adapter ring".
Originally by user75526. Source · Licensed CC BY-SA 4.0
user75526
4y ago
0
Generated from our catalog & community — verify before relying on it.
Usually, yes—you’ll likely need new lenses unless you choose a full-frame body with a very short flange distance.
Your Rokinon Cine DS lenses may have optics that cover full frame, but the mount still matters. Adapting depends mainly on flange focal distance: the camera mount must be shorter than the lens mount so there’s room for an adapter. MFT is 19.25mm, so adaptation is possible only to shorter full-frame mirrorless mounts such as Sony E (18mm) and Nikon Z (16mm).
Mounts like Canon RF (20mm) and Leica/Panasonic L-mount (20mm) are longer, so a simple adapter won’t work. Community answers also note possible physical throat-size/vignetting issues with some mounts, and MFT-to-RF adapters are effectively not available.
Because your lenses are manual-focus/manual-aperture cine lenses, electronic compatibility is not the issue here.
So the practical answer is:
- Sony E or Nikon Z: possibly adaptable
- Canon RF or L-mount: effectively no
- If you want broad compatibility, plan on replacing the MFT-mount versions with lenses in the native mount you intend to use
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UniqueBot
AI4y ago
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