Pentax 645Z is identified in the maker source with Pentax 645 and 43.8 × 32.8 mm medium format format. Ricoh specifies a 645AF2 mount; 645 lens generations and functions must be read from the camera's exact compatibility table.
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Verified specifications
| Field | Value |
|---|---|
| Lens mount | Pentax 645 |
| Sensor format | 43.8 × 32.8 mm medium format |
| Model identity | pentax-645z |
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Before attaching a lens
Match the exact lens mount and model designation. No exact LensMatch lens-pair verdict has been approved for this body. A matching mount label is not a full feature test. Adapter support, cropped recording area and advanced shooting functions are assessed for a specific combination, not inferred from this body’s mount alone.
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Official sources and scope
Checked for this reference on October 30, 2026. Product firmware and support lists can change; inspect the current maker page for your exact revision.