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PENTAX 645D Medium Format Camera

The Pentax 645D is a 40MP Medium Format medium format camera — known for its 40MP Medium Format Sensor and PRIME II Image Processor. Check GearFocus for current availability, with buyer protection on every purchase.

PENTAX 645D Medium Format Camera

PENTAX 645D Medium Format Camera

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Overview — Pentax 645D

The Pentax 645D is a medium format digital SLR camera built around a 40MP sensor and powered by the PRIME II image processor. It delivers a maximum still resolution of 7264x5440 pixels, making it a serious tool for photographers who prioritize image detail and tonal richness. The native ISO range runs from 100 to 1600, keeping the system focused on controlled shooting environments where image quality is paramount.

Autofocus is handled by an 11-point contrast detection system, and the camera offers a burst mode with a maximum frame rate of 1.1 fps — clearly positioning this body for deliberate, methodical shooting rather than action work. Color output options include both sRGB and AdobeRGB color profiles. The body is constructed from magnesium alloy and carries a weather sealed rating, giving it durability in challenging outdoor conditions.

At 1480g and measuring 156 x 117 x 119mm, this is a substantial piece of equipment. A 3.0-inch, 921k-dot LCD display and an optical viewfinder are onboard for image review and composition. Storage is handled via SD and SDHC cards, and connectivity includes USB.

The flash system uses the Pentax Standard TTL hotshoe, and the camera accepts Pentax 645 mount lenses. Battery life is rated at 800 shots on the included lithium-ion pack. Video capability is not specified in this configuration.

Key Features — Pentax 645D

40MP Medium Format Sensor: Captures images at 7264x5440 pixels, delivering exceptional detail and tonal depth suited to studio, landscape, and commercial work.

PRIME II Image Processor: Handles image processing duties with an emphasis on color accuracy and noise control within the native ISO 100–1600 range.

Weather-Sealed Magnesium Alloy Body: Dust and moisture resistant construction makes this a viable option for location shoots in challenging outdoor conditions.

Pentax 645 Lens Mount: Compatible with the full range of Pentax 645-system lenses, including legacy film-era glass and modern digital-optimized optics.

11-Point Contrast Detection AF: Provides reliable focus for deliberate, methodical shooting typical of medium format workflows.

AdobeRGB Color Profile Support: Wide color gamut output is well suited to print production and color-critical commercial applications.

Specifications — Pentax 645D

Pentax 645D full specifications
SpecDetail
Use CasesPortrait, Landscape, Studio, Product, Architecture
TypeMedium Format
SensorMedium Format
Resolution40MP
ProcessorPRIME II
ISO Range100 – 1600
AF SystemContrast Detection
AF Points11
Max Photo Resolution7264x5440
Burst Rate1.1 fps
Image StabilizationNone
Display3.0 inches LCD

Description — Pentax 645D

The Pentax 645D is a medium format digital SLR camera built for photographers who prioritize image resolution and build quality above all else. Its 40MP sensor, processed by the PRIME II image processor, captures stills at a maximum resolution of 7264x5440 pixels — delivering substantial file sizes suited to large-format printing and detailed post-processing work. The ISO range of 100 to 1600 keeps noise well managed across that range, though it favors use in well-lit environments or controlled studio conditions.

The 11-point contrast detection autofocus system and 1.1 fps burst rate make clear that this body is designed for careful, considered shooting. The magnesium alloy body is weather sealed, measuring 156 x 117 x 119mm and weighing 1480g, making it a robust field camera. A 3.0-inch, 921k-dot LCD display and an optical viewfinder assist with composition and image review.

The camera uses SD and SDHC cards for storage, includes USB connectivity, and mounts lenses via the Pentax 645 mount system. Flash integration is handled through the Pentax Standard TTL hotshoe.

Pros — Pentax 645D

  • ✓40MP sensor delivers a maximum resolution of 7264x5440 pixels for highly detailed images
  • ✓Weather sealed magnesium alloy body offers durability in demanding outdoor environments
  • ✓AdobeRGB and sRGB color profile support provides flexibility for print and digital workflows

Cons — Pentax 645D

  • ✗Maximum burst rate of 1.1 fps is extremely limited, unsuitable for fast-moving subjects
  • ✗ISO ceiling of 1600 restricts shooting in low-light situations
  • ✗No video capability — all videoSpecs fields are null

Reviews — Pentax 645D

Videos — Pentax 645D

Pentax 645D Hands-On Field Test — TheCameraStoreTV

Resources & Downloads — Pentax 645D

Manuals & Guides

Frequently Asked Questions — Pentax 645D

What lens mount does the Pentax 645D use?+
The Pentax 645D uses the Pentax 645 lens mount. This is a dedicated medium format mount, so it is compatible with lenses designed for the Pentax 645 system.
Is the Pentax 645D weather sealed?+
Yes, the specifications confirm the Pentax 645D carries a weather sealed rating. The body is also constructed from magnesium alloy, adding structural rigidity alongside that environmental protection.
Can the Pentax 645D shoot video?+
No. All video specification fields — including maximum resolution, frame rate, and color profiles — are listed as null in the camera's specifications. This is a stills-only camera.
What is the autofocus system like on the Pentax 645D?+
The Pentax 645D uses a contrast detection autofocus system with 11 focus points. Eye tracking and subject tracking are not supported, so the system is best suited for stationary or slow-moving subjects.
What memory cards does the Pentax 645D accept?+
The Pentax 645D accepts SD and SDHC memory cards. No additional card slot types are listed in the specifications.
What flash system does the Pentax 645D support?+
The Pentax 645D features a Pentax Standard TTL hotshoe, supporting TTL flash metering with compatible Pentax Standard system flash units.

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