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Pentax smc P-D FA 50mm f/2.8 Macro Lens

The Pentax 50mm f/2.8 Macro is a 50mm f/2.8 lens designed for Pentax K mount cameras. Used copies start from $154.7 on GearFocus, with buyer protection on every purchase.

Pentax smc P-D FA 50mm f/2.8 Macro Lens

Pentax smc P-D FA 50mm f/2.8 Macro Lens

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Pentax-D FA 50mm f2.8 SMC Macro Lens

Condition: Excellent

Product Highlights

  • 1:1 Magnification Ratio
  • Multi-Coating Technology
  • Compact and Lightweight
  • High Optical Performance

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Used Pentax 50mm f/2.8 Macro Listings on GearFocus

Pentax-D FA 50mm f2.8 SMC Macro Lens
Pentax-D FA 50mm f2.8 SMC Macro Lens

Excellent

$154.70

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Lens Overview — Pentax 50mm f/2.8 Macro

The Pentax smc P-D FA 50mm f/2.8 Macro is a prime lens built for the Pentax K mount, designed to serve both full-frame and APS-C DSLR systems. With a fixed focal length of 50mm and a maximum aperture of f/2.8, this lens sits comfortably in the standard focal length range, making it versatile for a variety of shooting situations beyond dedicated macro work. Weighing in at just 265g and accepting a compact 49mm filter thread, it is notably lightweight and easy to carry, whether mounted on a travel kit or a studio setup.

The lens supports both autofocus and manual focus operation, giving photographers the flexibility to switch between modes depending on the shooting scenario. It is classified as a full-frame format lens, meaning it provides sufficient image circle coverage for Pentax K-mount full-frame and film SLR bodies, as well as APS-C DSLRs. Image stabilization is not included in this lens, so photographers should account for that when shooting in lower light conditions or at slower shutter speeds.

Overall, this is a compact, lightweight, and capable 50mm macro prime built specifically for the Pentax K ecosystem.

Key Features — Pentax 50mm f/2.8 Macro

1:1 Macro Reproduction: Achieves life-size magnification, allowing photographers to capture fine detail in small subjects like insects, flowers, and product details.

50mm Standard Focal Length: Provides a natural, undistorted perspective that makes this lens useful for portraiture, everyday photography, and close-up work alike.

f/2.8 Maximum Aperture: Allows for subject separation and background blur even outside of macro use, and supports shooting in moderate low-light conditions.

Pentax K Mount: Compatible with the full range of Pentax K-mount DSLR bodies, including both full-frame and APS-C sensor cameras.

Full-Frame Coverage: Image circle covers full-frame and 35mm film SLR sensors, ensuring no vignetting on larger-format Pentax bodies.

Autofocus and Manual Focus: Supports both AF and MF operation, giving photographers the option to switch modes depending on the precision required for the shot.

Lens Specifications — Pentax 50mm f/2.8 Macro

Pentax 50mm f/2.8 Macro full specifications
SpecDetail
Use CasesMacro, Studio
Lens TypeMacro
FormatFull Frame
Zoom/PrimePrime
Focal Length50mm
Maximum Aperturef/2.8
Camera SystemDSLR
Lens MountPentax K
AutofocusYes
Focus TypeAuto, Manual
Image StabilizationNone
Filter Thread49mm

Description — Pentax 50mm f/2.8 Macro

The Pentax smc P-D FA 50mm f/2.8 Macro is a prime lens with a fixed 50mm focal length designed specifically for the Pentax K mount. Classified as a full-frame format lens, it is compatible with both full-frame and APS-C Pentax DSLR bodies, as well as Pentax film SLR cameras. At just 265g, it is impressively lightweight for a macro lens, and the 49mm filter thread keeps the overall profile compact and filter-friendly.

The lens supports both autofocus and manual focus, giving photographers control over focus method — an important consideration in close-up macro shooting where precise focus placement is critical. The maximum aperture of f/2.8 allows for reasonable light gathering and some background separation at normal shooting distances. Image stabilization is not present in this lens, so stability-conscious shooters should plan accordingly. The lens falls within the standard focal length range, making it a practical choice not just for macro subjects but also for everyday photography on Pentax K-mount cameras.

Pros — Pentax 50mm f/2.8 Macro

  • ✓Lightweight build at just 265g, making it easy to handle during extended shooting sessions
  • ✓Compact 49mm filter thread keeps accessory costs low and the overall size small
  • ✓Supports both autofocus and manual focus, offering flexibility across different shooting styles

Cons — Pentax 50mm f/2.8 Macro

  • ✗No image stabilization, which can be a limitation in low-light or handheld macro shooting
  • ✗Maximum aperture of f/2.8 is moderate compared to faster 50mm primes available for other systems
  • ✗Limited to the Pentax K mount, restricting use to Pentax-compatible bodies only

Resources & Downloads — Pentax 50mm f/2.8 Macro

Manuals & Guides

Frequently Asked Questions — Pentax 50mm f/2.8 Macro

Is this lens compatible with full-frame Pentax cameras?+
Yes, the lens format is specified as Full Frame, meaning it is designed to cover the image circle required for full-frame and 35mm film Pentax K-mount bodies. It will also work on APS-C Pentax DSLRs.
Does this lens support autofocus?+
Yes, autofocus is supported. The lens also offers manual focus, so you can switch between the two modes depending on your needs — particularly useful for precise macro work where manual focus is often preferred.
What filter size does this lens use?+
The Pentax smc P-D FA 50mm f/2.8 Macro uses a 49mm filter thread, which is a common and affordable filter size. This makes it straightforward to find compatible polarizers, ND filters, and other accessories.
Does this lens have image stabilization?+
No, image stabilization is listed as None in the specifications. Photographers who need stabilization when shooting handheld macro shots should rely on in-body stabilization if their Pentax camera body provides it.
How heavy is this lens?+
The lens weighs 265g, making it one of the more lightweight options for a dedicated macro prime. This is a practical advantage when shooting on location or carrying it alongside other gear.
Is this lens a zoom or a prime?+
This is a prime lens with a fixed focal length of 50mm. It does not zoom, but the fixed focal length is in the standard range, making it useful for a variety of subjects beyond close-up macro photography.

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