Pentax 645Z IR is identified in the maker source with Pentax 645 and Medium format format. The maker source identifies this body and mount. Detailed lens functions require an exact maker compatibility table.
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Verified specifications
| Field | Value |
|---|---|
| Lens mount | Pentax 645 |
| Sensor format | Medium format |
| Model identity | pentax-645z-ir |
| Sensor dimensions | 43.8 × 32.8 mm |
| Effective resolution | 51.4 MP |
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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.