Pentax

Pentax k-3 Mark III APS-C Camera 55-300mm Lens Kit

Capture the World with Precision: Pentax K-3 Mark III APS-C CameraExperience unparalleled image quality and responsiveness with the Pentax K-3 Mark III. This flagship APS-C camera, paired with the versatile Pentax HD DA 55-300mm lens, delivers exceptional detail and performance in any shooting sc...

$2,446.90*$2,479.90Save 1%
Check availability

*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

Capture the World with Precision: Pentax K-3 Mark III APS-C Camera

Experience unparalleled image quality and responsiveness with the Pentax K-3 Mark III. This flagship APS-C camera, paired with the versatile Pentax HD DA 55-300mm lens, delivers exceptional detail and performance in any shooting scenario.

Specifications:

  • Camera Type: Flagship APS-C
  • Lens: Pentax HD DA 55-300mm f/4.5-6.3 ED PLM WR RE Lens
  • Viewfinder: Optical viewfinder with 100% field of view and 1.05x magnification
  • ISO Sensitivity: Top ISO sensitivity of 1.6 Million
  • Focusing: Short minimum focusing distance of 0.95 meter
  • Diaphragm Control: PENTAX’s first K mount with electromagnetic diaphragm control system
  • Diaphragm Blades: 9
  • Focus System: Rear focus system and PLM (pulse motor), direct drive lead screw system
  • Construction: Weather-resistant
  • Lens Elements: ED lens elements

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.

Short minimum focusing distance of 095 meter PENTAX’s first K mount with electromagnetic diaphragm control system for a quiet sound operation during movie recording

Diaphragm blades: 9.Rear focus system and PLM (pulse motor), direct drive lead screw system for quite zoom a High speed AF Compact telephoto zoom lens thanks to its collapsible structure

Weather resistant construction ED lens elements for brilliant sharpness and saturated colors

Specifications

Camera Type
APS-C Camera
Model Name
K-3 Mark III
Lens Kit
55-300mm Lens
Optical Viewfinder
100% field of view, 1.05x image magnification
ISO Sensitivity
Up to 1.6 million
Noise Reduction
Multi-dimensional image space filtering
Lens Mount
PENTAX K mount (with electromagnetic diaphragm control)
Lens Features
Rear focus system, PLM (pulse motor), direct drive lead screw system
Lens Diaphragm Blades
9
Lens Construction
Weather resistant, ED lens elements
Lens Min. Focusing Distance
0.95 meter
Brand
Pentax

Pros & Cons

👍 Pros

  • Features a newly designed optical viewfinder with 100% field of view and 1.05x image magnification, similar to full-frame cameras.
  • Offers a top ISO sensitivity of 1.6 million, allowing image capture in extremely low light conditions.
  • Utilizes multi-dimensional image space filtering to reduce noise while preserving fine details and textures.
  • The K-mount with electromagnetic diaphragm control system ensures quiet operation during movie recording.
  • Comes with a compact telephoto zoom lens (55-300mm) that has weather-resistant construction for outdoor use.
  • The 55-300mm lens features ED elements for brilliant sharpness and saturated colors across the zoom range.

👎 Cons

  • Specific megapixels or sensor size of the APS-C camera are not provided in the features.
  • The product title specifies an "APS-C Camera," indicating it does not offer a full-frame sensor.
  • Details on video recording capabilities, such as resolution and frame rates, are not fully elaborated beyond quiet movie recording.
  • The short minimum focusing distance of 0.95 meters for the lens might not be ideal for extreme macro photography.
  • The camera's weight and dimensions are not detailed, which can be a factor for portability.

Frequently Asked Questions

The Pentax K-3 Mark III offers a top ISO sensitivity of 1.6 million, enabling image capture in very low light conditions.
It has a newly designed optical viewfinder with a 100% field of view and 1.05x image magnification, providing a wide viewing angle.
Yes, the 55-300mm telephoto zoom lens included in the kit features weather-resistant construction.
The lens features a PLM (pulse motor) and direct drive lead screw system for quiet and high-speed AF, suitable for both photography and movie recording.
The camera uses multi-dimensional image space filtering to reduce noise effectively while maintaining fine contours and maximizing resolution.
The 55-300mm lens has a short minimum focusing distance of 0.95 meters.