Pentax 90mm f/2.8 Macro ED AW SR Lens
The Pentax 90mm f/2.8 Macro ED AW SR is a 90mm f/2.8 lens designed for Pentax 645 mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Pentax 90mm f/2.8 Macro ED AW SR Lens
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Lens Overview — Pentax 90mm f/2.8 Macro ED AW SR
Key Features — Pentax 90mm f/2.8 Macro ED AW SR
Pentax 645 Mount: Designed exclusively for the Pentax 645 medium format system, ensuring full compatibility with 645 bodies and their larger image circle.
90mm Prime Focal Length: Fixed telephoto focal length provides a consistent angle of view well suited to close-up work and portrait-style shooting on medium format.
f/2.8 Maximum Aperture: A wide maximum aperture for a medium format macro lens, allowing meaningful background separation and usable light-gathering in close-up situations.
True Macro Capability: Purpose-built macro optic designed for close-up photography, enabling detailed reproduction of small subjects on a medium format sensor.
In-Body Shake Reduction (SR): Optical image stabilization is provided by the camera body to reduce the effect of camera shake during handheld shooting. This is a camera-body system; the lens itself does not contain OIS elements.
Autofocus and Manual Focus: Supports both AF and MF operation, giving photographers the choice between fast subject acquisition and precise manual control for critical focus work.
Lens Specifications — Pentax 90mm f/2.8 Macro ED AW SR
| Spec | Detail |
|---|---|
| Use Cases | Macro, Studio |
| Lens Type | Macro |
| Format | Medium Format |
| Zoom/Prime | Prime |
| Focal Length | 90mm |
| Maximum Aperture | f/2.8 |
| Camera System | Medium Format |
| Lens Mount | Pentax 645 |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | Optical (OIS) |
| Filter Thread | 67mm |
Description — Pentax 90mm f/2.8 Macro ED AW SR
The Pentax 90mm f/2.8 Macro is a prime telephoto macro lens built for the medium format camera system, using the Pentax 645 lens mount. With a maximum aperture of f/2.8, it allows for a meaningful degree of background separation even in close-up macro work. The lens is equipped with optical image stabilization, helping to manage the effects of camera movement during handheld shooting.
Both autofocus and manual focus are supported, giving photographers control over how they engage with their subjects. A 67mm filter thread provides compatibility with a broad selection of standard photographic filters. Weighing in at 1,040g, this is a solidly built optic suited to serious medium format shooters who need a dedicated macro prime in their kit.
Its telephoto focal length range and macro type classification make it a specialized but highly capable tool for close-up and detail-oriented photography within the Pentax 645 ecosystem.
Pros — Pentax 90mm f/2.8 Macro ED AW SR
- ✓Wide f/2.8 maximum aperture for a medium format macro lens enables strong subject separation
- ✓Supports both autofocus and manual focus (focusType: Auto, Manual) for shooting flexibility
- ✓Built-in optical image stabilization helps manage camera shake during handheld shooting
Cons — Pentax 90mm f/2.8 Macro ED AW SR
- ✗At 1,040g, the lens is quite heavy and may cause fatigue during extended handheld use
- ✗Exclusively compatible with the Pentax 645 mount, limiting it to that specific medium format system
- ✗Fixed 90mm focal length offers no zoom flexibility, requiring lens changes for different compositions
Videos — Pentax 90mm f/2.8 Macro ED AW SR
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