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Pentax K100D DSLR Camera

The Pentax K100D is a 6MP APS-C DSLR camera — known for its 6MP APS-C Sensor and Sensor-Shift IBIS. Check GearFocus for current availability, with buyer protection on every purchase.

Pentax K100D DSLR Camera

Pentax K100D DSLR Camera

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Overview — Pentax K100D

The Pentax K100D is an APS-C DSLR built around a 6MP sensor with a maximum still resolution of 3008x2000 pixels. One of its standout features for its class is sensor-shift in-body image stabilization (IBIS), which works with any compatible Pentax K-mount lens. The autofocus system uses phase detection with 11 focus points, giving photographers solid subject acquisition performance for everyday shooting.

ISO sensitivity runs from 200 to 3200, covering a reasonable range of lighting conditions. The camera supports both sRGB and Adobe RGB color profiles, offering some flexibility in color output for post-processing workflows. A built-in pop-up flash with P-TTL compatibility is included, alongside a standard ISO hot shoe for external flash units.

The 2.5-inch TFT LCD display renders at 210,000 dots for image review. Storage is handled via SD card or Memory Stick slots, and the camera connects to a computer via USB. Rather than a proprietary rechargeable pack, the K100D runs on 4x AA batteries or 2x CR-V3 cells, making power sourcing straightforward in the field.

The body is constructed from plastic with a metal chassis and weighs 660g, with dimensions of 129 x 93 x 70mm. No video recording capability is present in this model.

Key Features — Pentax K100D

6MP APS-C Sensor: Delivers a maximum resolution of 3008x2000 pixels on an APS-C sensor with a 1.5x crop factor.

Sensor-Shift IBIS: In-body image stabilization works with any Pentax K-mount lens, adding shake reduction regardless of which optic is attached.

11-Point Phase Detection AF: Phase detection autofocus with 11 focus points provides broad frame coverage for reliable subject acquisition.

ISO 200–3200 Range: Covers a practical sensitivity range for shooting in varied lighting conditions, from bright daylight to dim interiors.

AA Battery Compatibility: Runs on 4x AA batteries or 2x CR-V3 cells, eliminating the need for a proprietary charger and making power sourcing easy anywhere.

Pentax K-Mount: Compatible with the extensive range of Pentax K-mount lenses, including a large selection of affordable used glass.

Specifications — Pentax K100D

Pentax K100D full specifications
SpecDetail
Use CasesTravel, Beginner-Friendly
TypeDSLR
SensorAPS-C
Resolution6MP
ProcessorProprietary Pentax processor
ISO Range200 – 3200
AF SystemPhase Detection
AF Points11 points
Max Photo Resolution3008x2000
Burst Rate2.8 fps
Image StabilizationSensor-Shift (IBIS)
Display2.5 inches TFT LCD

Description — Pentax K100D

The Pentax K100D is an APS-C DSLR centered on a 6MP sensor capable of a maximum resolution of 3008x2000 pixels. Its headline feature is sensor-shift in-body image stabilization, which applies to any lens mounted on the Pentax K mount — a meaningful advantage when using older or manual glass. The 11-point phase detection autofocus system handles subject acquisition reliably, while an ISO range of 200–3200 covers a broad range of lighting scenarios.

Color output is available in sRGB or Adobe RGB profiles. For flash work, the camera includes a built-in P-TTL pop-up flash and a standard ISO hot shoe. The 2.5-inch TFT LCD with 210,000 dots handles image review duties.

Burst shooting is supported at up to 2.8 fps. The body measures 129 x 93 x 70mm, weighs 660g, and is built from plastic with a metal chassis. Power comes from 4x AA or 2x CR-V3 batteries, and the camera connects via USB.

Storage options include SD and Memory Stick cards.

Pros — Pentax K100D

  • ✓Sensor-shift IBIS works with any Pentax K-mount lens, adding stabilization regardless of the optic used
  • ✓11-point phase detection autofocus system provides broad frame coverage for subject acquisition
  • ✓ISO range extends to 3200, usable for lower-light shooting scenarios

Cons — Pentax K100D

  • ✗6MP maximum resolution (3008x2000) is modest and limits large-format output or heavy cropping
  • ✗No video recording capability — videoSpecs fields are all null
  • ✗No weather sealing, leaving the body vulnerable to dust and moisture

Videos — Pentax K100D

Pentax K100D: A great value in a used digital SLR — Jeremy “Smaug”

Resources & Downloads — Pentax K100D

Manuals & Guides

Frequently Asked Questions — Pentax K100D

What lenses are compatible with the Pentax K100D?+
The K100D uses the Pentax K lens mount, as listed in the specifications. Any Pentax K-mount lens can be attached. The in-body image stabilization means stabilization is available regardless of which K-mount lens you use.
Can the Pentax K100D record video?+
No. The videoSpecs section of the K100D's specifications shows null values for all video fields — maximum resolution, frame rates, and bit depth are all absent. This camera is a stills-only device.
What storage media does the K100D accept?+
The K100D accepts SD cards and Memory Stick media, as specified in the storageMedia field. Having two format options provides some flexibility in card sourcing.
What batteries does the Pentax K100D use?+
The camera runs on 4x AA batteries or 2x CR-V3 batteries. This means you can use widely available alkaline or rechargeable AA cells rather than being dependent on a proprietary lithium-ion battery pack.
Does the K100D have image stabilization?+
Yes. The K100D features sensor-shift in-body image stabilization (IBIS), as confirmed in the imageStabilization specifications. Digital IS is not present; only the optical sensor-shift system is included.
Is the Pentax K100D weather sealed?+
No. The bodyDesign.weatherSealing field explicitly states 'None,' so the camera offers no protection against dust or moisture ingress. The body is constructed from plastic with a metal chassis.

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