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Pentax 645 FA 45mm F/2.8 Lens
Fixed focal-length. No zoom.
Rectilinear are normal lenses that show straight lines as straight lines.
Thread size in milimeters for screw-on filters.67
Autofocus LensLens Description
The Pentax 645 FA 45mm F/2.8 is a wide prime designed for cameras with a 645 (0.5X) sensor. This bright prime has a 45mm focal-length. It provides the same field of view as a 22.5mm lens on a Full-Frame camera.
This prime lens focuses down to 45cm from the imaging plane, capturing subject with a maximum 0.15X magnification. The lens can focus automtically with the Focus-Drive selected by the camera. While this lens is capable of AF, it does not have a built-in focus motor. It can only focus with a compatible camera body which features a mechanical AF-coupling.
The lens weighs 475g.
This lens is only available for the Pentax 645 mount. It directly attaches and is fully compatible with all Pentax 645 mount cameras with 645 (0.5X) or smaller sensors.
Focal-Range
Angle-Of-View
Maximum Aperture
Viewing Angle Range
Maximum Aperture
Magnification
Weight
Pentax 645 FA 45mm F/2.8 Specifications
| Brand | Pentax | Model | 645 FA 45mm F/2.8 |
|---|---|---|---|
| Mount | Pentax 645 AF2 | Max FLM | 0.5X |
| Focal Length | 45mm | View Angle | 76° |
| Max Aperture | F/2.8 | Min Aperture | F/22 |
| Min Focus | 45cm | Magnification | 0.15X |
| Filter Size | 67mm | Aperture Blades | 8 |
| Size (D x L) | 77 x 67mm | Weight | 475g |
| Tilt | N / A | Shift | N / A |
| Stabilization | Protection | None | |
| Zoom Drive | N / A | Focus Drive | Autofocus |
| Zoom Mechanism | N / A | Focus Mechanism | External |
| Hood | Bayonet | Focus Motor | External |
| Perspective | Rectilinear | Introduced | 2010-03-10 |
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Pentax 45mm F/2.8 Facts
Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Thread size in milimeters for screw-on filters.67Autofocus Lens| 45mm Focal-Length | F/2.8 Constant Aperture |
| 67mm Filter Thread | Autofocus |
| Pentax 645 Mount | 645 (0.5X) Coverage |
| 475g Lens Weight | 77 x 67mm (D x L) |
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