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Mamiya G 150mm f/4.5 L Lens

The Mamiya 150mm f/4.5 L is a 150mm f/4.5 lens designed for Mamiya G mount cameras. Used copies start from $799 on GearFocus, with buyer protection on every purchase.

Mamiya G 150mm f/4.5 L Lens

Mamiya G 150mm f/4.5 L Lens

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Mamiya 150mm f4.5 G L for Mamiya 6 Rangefinder system

Condition: Excellent

Product Highlights

  • Medium telephoto lens for medium format cameras
  • f/4.5 maximum aperture
  • High-quality optical construction
  • Compact and lightweight design

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Used Mamiya 150mm f/4.5 L Listings on GearFocus

Mamiya 150mm f4.5 G L for Mamiya 6 Rangefinder system
Mamiya 150mm f4.5 G L for Mamiya 6 Rangefinder system

Excellent

$799.00

Lens Overview — Mamiya 150mm f/4.5 L

The Mamiya G 150mm f/4.5 L is a prime telephoto lens built for the Mamiya G medium format camera system. Designed around the Mamiya G mount, this lens sits firmly in the telephoto focal length range at 150mm, making it a natural choice for portrait work, detail shots, and any scenario where subject isolation and working distance are priorities. As a prime lens, it delivers a fixed perspective that encourages deliberate, considered framing — a working style that suits medium format photography well.

The maximum aperture of f/4.5 provides a defined exposure baseline for shooting conditions. Focus is entirely manual, which aligns with the deliberate, tactile shooting experience that medium format rangefinder systems are known for. There is no image stabilization, which is expected for a lens of this type and era.

The lens is designed exclusively for the Mamiya G mount, so compatibility is specific to that camera system. For photographers already invested in the Mamiya G system who need a telephoto prime option, this lens represents a purpose-built, system-native choice without the compromises of adapted alternatives.

Key Features — Mamiya 150mm f/4.5 L

150mm Telephoto Prime: Fixed focal length delivers a dedicated telephoto perspective well-suited to portrait, detail, and isolation work.

Medium Format Coverage: Designed to cover the medium format frame, taking full advantage of the larger sensor or film area.

Native Mamiya G Mount: Built specifically for the Mamiya G system, ensuring direct compatibility without adapters or crop factor concerns.

f/4.5 Maximum Aperture: Provides a consistent exposure baseline across shooting conditions for a lens of this focal length and era.

Manual Focus Design: Fully manual focus operation suits the deliberate, tactile shooting style characteristic of medium format rangefinder systems.

Lens Specifications — Mamiya 150mm f/4.5 L

Mamiya 150mm f/4.5 L full specifications
SpecDetail
Use CasesPortrait, Landscape, Studio
Lens TypePrime
FormatMedium Format
Zoom/PrimePrime
Focal Length150mm
Maximum Aperturef/4.5
Camera SystemMedium Format
Lens MountMamiya G
AutofocusNo
Focus TypeManual Focus
Image StabilizationNone

Description — Mamiya 150mm f/4.5 L

The Mamiya G 150mm f/4.5 L is a prime telephoto lens designed specifically for the Mamiya G medium format camera system. With a fixed 150mm focal length, it falls squarely in the telephoto range, providing the working distance and perspective compression that portrait, still life, and detail photographers often seek. The lens is rated for medium format coverage, matching the demands of Mamiya G system bodies.

Shooting is manual focus only, placing full control in the photographer's hands — a fitting approach for the considered pace of medium format work. The maximum aperture of f/4.5 defines the lens's light-gathering ceiling. There is no image stabilization, consistent with the design expectations of this lens class.

Native Mamiya G mount integration means no adapters or compatibility compromises for users already shooting within the Mamiya G ecosystem. For medium format photographers who want a dedicated telephoto prime that fits their system without modification, this lens is a straightforward, purpose-matched option.

Pros — Mamiya 150mm f/4.5 L

  • ✓Fixed 150mm focal length offers a dedicated telephoto perspective suited to portrait and detail photography
  • ✓Prime lens design (zoomPrime: Prime) provides a focused, single-purpose optical approach
  • ✓Native Mamiya G mount ensures direct, system-native compatibility with no adapters required

Cons — Mamiya 150mm f/4.5 L

  • ✗Maximum aperture of f/4.5 is relatively modest for a telephoto prime, limiting low-light flexibility
  • ✗Manual focus only — no autofocus capability for fast-moving or spontaneous subjects
  • ✗No image stabilization, which may require careful handholding technique at 150mm

Videos — Mamiya 150mm f/4.5 L

The BEST Medium Format Camera for Travel | Mamiya 6 Review — Matt Day

Resources & Downloads — Mamiya 150mm f/4.5 L

Manuals & Guides

Frequently Asked Questions — Mamiya 150mm f/4.5 L

What cameras is this lens compatible with?+
This lens is built around the Mamiya G mount and is designed for use with Mamiya G medium format cameras. It is a system-specific lens and is not natively compatible with other mounts or camera systems.
Does this lens support autofocus?+
No. The Mamiya G 150mm f/4.5 L is a manual focus lens only. Autofocus is not supported, so focus must be set by hand — a characteristic consistent with medium format rangefinder systems.
Is this a zoom or a prime lens?+
This is a prime lens with a fixed focal length of 150mm. There is no zoom capability, and the focal length cannot be changed.
Does this lens have image stabilization?+
No. Image stabilization is listed as None in the specifications, so all stabilization when shooting handheld must come from technique or camera support.
What is the maximum aperture of this lens?+
The maximum aperture is f/4.5. This is the widest the lens can open, setting the upper limit for light gathering and background separation capability.

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