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Pentax

Pentax K-3 Mark III APS-C Camera with 11-18mm Lens

Pentax K-3 Mark III - Capture the Essence of Photography The Pentax K-3 Mark III is a flagship APS-C camera designed with a passion for photography. Featuring a newly designed optical viewfinder with 100% field of view, exceptional low-light performance with top ISO sensitivity, and in-camera sha...

$3,396.90*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

Pentax K-3 Mark III - Capture the Essence of Photography

The Pentax K-3 Mark III is a flagship APS-C camera designed with a passion for photography. Featuring a newly designed optical viewfinder with 100% field of view, exceptional low-light performance with top ISO sensitivity, and in-camera shake reduction, this camera delivers outstanding image quality and performance. This bundle includes the HD PENTAX-DA 11-18mmF2.8ED DC AW Ultra-Wide-Angle Zoom Lens.

Camera Specifications

  • Sensor: APS-C
  • Viewfinder: Optical with 100% field of view, 1.05x magnification
  • ISO Sensitivity: Up to 1.6 Million
  • Shake Reduction: In-camera (SR)

Lens Specifications

  • Focal Length: 11-18mm (17-27.5mm equivalent)

Key Features

Based on core principles of passion for photography, The All New Flagship APS-C model K-3 III continues a heritage of craftsmanship combined with todays new technologies.

The newly designed optical veiwfinder provides a 100% field of view and 1.05x image magnification. The veiwfinder offers a wide viewing angle comparable to full frame cameras with increased image brightness due to the improved reflectance of the pentaprism.

Top ISO sensitivity of 1.6 million provides image capture in low light situations and achieves excellent descriptive power in the entire sensitivity range. Multi-dimensional image space filtering reduces noise while leaving fine contours. It maximizes the resolution performance and reproduces the texture and details of the subject.

In-camera shake reduction (SR): the Pentax digital SLR K Series cameras are equipped with the SR mechanism built into the camera body. Because shake reduction is applied in the camera body, this means that any lens Compatible with the K-Series cameras will benefit from image stabilization.

Pentax Star series lens: A new-generation, high-performance star-series lens delivering superb imaging quality and exceptional resolving power.

Hd coating to enhance imaging power: produce high-contrast images with edge-to-edge sharpness and free of flare and ghost images.

Specifications

Brand
Pentax
Model
K-3 Mark III
Sensor Size
APS-C
Viewfinder Field of View
100%
Viewfinder Magnification
1.05x
Max ISO Sensitivity
1.6 million
Image Stabilization
In-camera shake reduction (SR)
Included Lens
11-18mm Star Series Lens
Lens Coating
HD coating

Pros & Cons

👍 Pros

  • The Pentax K-3 Mark III features a newly designed optical viewfinder with 100% field of view and 1.05x magnification, comparable to full-frame cameras.
  • It achieves a top ISO sensitivity of 1.6 million, allowing for image capture in extremely low-light situations while maintaining descriptive power.
  • In-camera shake reduction (SR) provides image stabilization with any K-Series compatible lens, ensuring sharper photos.
  • Multi-dimensional image space filtering effectively reduces noise while preserving fine contours and subject texture.
  • The camera is designed with a strong focus on craftsmanship and integrates new technologies with a heritage of photography passion.
  • Paired with a new-generation Star series lens, it delivers superb imaging quality and exceptional resolving power.
  • HD coating on the lens enhances imaging power, producing high-contrast images free of flare and ghosting.

👎 Cons

  • The camera's APS-C sensor, while advanced, may not offer the same low-light performance or shallow depth of field as full-frame cameras.
  • While the viewfinder is improved, some users might prefer the real-time preview advantages of an electronic viewfinder found in other mirrorless systems.
  • Achieving the maximum ISO of 1.6 million will likely result in a significant amount of noise, making it practical only in extreme situations.
  • Specific details about video recording capabilities such as resolution, frame rates, or codecs are not provided in the features.
  • The overall size and weight of an APS-C DSLR-style camera with an 11-18mm lens might be less compact than other mirrorless options.

Frequently Asked Questions

The newly designed optical viewfinder on the Pentax K-3 Mark III provides a 100% field of view and 1.05x image magnification, offering a wide, bright viewing angle comparable to full-frame cameras for precise composition.
The in-camera shake reduction (SR) system of the Pentax K-3 Mark III is built into the camera body, meaning any lens compatible with K-Series cameras will automatically benefit from image stabilization, regardless of the lens type.
Yes, the Pentax K-3 Mark III offers a top ISO sensitivity of 1.6 million, enabling image capture in extremely low-light situations while striving to achieve excellent descriptive power across its sensitivity range.
The HD coating on the Pentax Star series 11-18mm lens is designed to enhance imaging power by producing high-contrast images that are largely free of distracting flare and ghost images, improving overall clarity.
The Pentax K-3 Mark III employs multi-dimensional image space filtering to reduce noise effectively at high ISOs, while simultaneously preserving fine contours and maximizing resolution to reproduce the texture and details of the subject.

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