Konica MF 300mm f/4.5 Hexanon EE AR Lens
The Konica 300mm f/4.5 AR is a 300mm f/4.5 lens designed for Konica AR mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Konica MF 300mm f/4.5 Hexanon EE AR Lens
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Lens Overview — Konica 300mm f/4.5 AR
Key Features — Konica 300mm f/4.5 AR
300mm Prime Telephoto: Fixed 300mm focal length delivers a dedicated telephoto perspective suited to wildlife, sport, and distant subject photography.
f/4.5 Maximum Aperture: Reasonable light-gathering capability for a telephoto of this length, supporting use in moderate lighting conditions.
Konica AR Mount: Designed for the Konica AR SLR system, and widely adaptable to modern mirrorless and DSLR bodies via third-party adapters.
Full-Frame Coverage: Covers a full-frame image circle with no vignetting penalty on full-frame bodies, adapted or native.
77mm Filter Thread: Accepts standard 77mm filters, compatible with many modern polarizer, ND, and UV filter systems.
Manual Focus Only: All-manual operation suits deliberate, considered shooting and pairs well with focus peaking on adapted mirrorless cameras.
Lens Specifications — Konica 300mm f/4.5 AR
| Spec | Detail |
|---|---|
| Use Cases | Wildlife, Sports, Birding |
| Lens Type | Telephoto |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 300mm |
| Maximum Aperture | f/4.5 |
| Camera System | SLR |
| Lens Mount | Konica AR |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 77mm |
Description — Konica 300mm f/4.5 AR
The Konica 300mm f/4.5 Hexanon EE is a prime telephoto lens built for the Konica AR mount system, offering full-frame coverage for SLR cameras. With a fixed 300mm focal length and a maximum aperture of f/4.5, this lens is purpose-built for reaching distant subjects with a consistent, dedicated perspective. It is a manual focus design, putting full control in the photographer's hands for a thoughtful, precise shooting experience.
The 77mm filter thread size is a practical advantage, allowing compatibility with a broad range of modern filter accessories. At 850g, the lens has a reassuringly solid construction. There is no image stabilization, so stable shooting technique or tripod use is recommended at this focal length.
For photographers drawn to vintage Konica glass or the AR mount system, this 300mm Hexanon represents a compelling telephoto option.
Pros — Konica 300mm f/4.5 AR
- ✓Fixed 300mm focal length provides a dedicated telephoto perspective with no zoom compromise
- ✓Maximum aperture of f/4.5 offers reasonable light-gathering capability for a prime of this length
- ✓77mm filter thread size is compatible with a wide range of modern filter systems
Cons — Konica 300mm f/4.5 AR
- ✗Manual focus only — no autofocus support, which can make tracking moving subjects challenging
- ✗No image stabilization, making handheld shooting at 300mm more demanding
- ✗Konica AR mount is a legacy system, requiring an adapter for use on any modern camera body
Videos — Konica 300mm f/4.5 AR
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Frequently Asked Questions — Konica 300mm f/4.5 AR
What camera mount does this lens use?+
This lens uses the Konica AR mount, a legacy SLR mount system. To use it on modern cameras, you will need a compatible third-party adapter. It is designed for full-frame SLR coverage.
Does this lens have autofocus?+
No, this is a manual focus only lens. There is no autofocus capability, so the photographer must focus by hand. This is typical of vintage lenses from this era.
What is the maximum aperture of this lens?+
The maximum aperture is f/4.5. This is a fixed prime lens with a 300mm focal length, so there is no zoom range to affect the maximum aperture.
What filter size does this lens accept?+
The lens has a 77mm filter thread, which is compatible with a wide selection of filters including polarizers, ND filters, and UV filters available from many manufacturers.
Does this lens have image stabilization?+
No, this lens has no image stabilization. When shooting at 300mm handheld, careful technique or a tripod is recommended to minimize camera shake and obtain sharp images.
How heavy is this lens?+
The lens weighs 850g. This is a substantial piece of glass, and a tripod collar or sturdy support may be beneficial for extended shooting sessions, particularly at slow shutter speeds.