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Pentax K-1 Mark II

Real Sensor Data

Brand
Pentax
Sensor Format
Full Frame
Resolution
36.4 MP
Pixel Pitch
4.87 microns
Circle of Confusion
0.0288 mm
Crop Factor
1.00x
Announced
2018

Released in 2018, the K-1 Mark II is Pentax's full-frame DSLR flagship, built around an optical viewfinder and genuine in-body sensor-shift stabilization used not just for handheld sharpness but for a distinctive Pixel Shift Resolution mode that combines multiple shifted exposures into a single image with dramatically improved color detail and reduced noise.

Pentax K-1 Mark II sensor specs

Sensor
Full Frame
Resolution
36.4 MP
Pixel dimensions
7,389 × 4,926 px
Aspect ratio
3:2
Pixel pitch
4.87 µm
Crop factor
1.00x
Circle of confusion
0.0288 mm

Full Frame sensor · DoF & Hyperfocal Calculator · Astro 500/NPF Calculator

Pixel Shift Resolution: A Genuinely Unusual Feature

Rather than the Bayer color filter interpolation every standard digital sensor relies on to estimate color at each pixel, Pixel Shift Resolution captures four separate exposures with the sensor mechanically shifted by a single pixel between each, then combines them so every pixel gets genuinely captured color data rather than interpolated color — a real, measurable improvement in color accuracy and fine detail for genuinely static subjects, though it requires either a tripod or the camera's own motion-compensation processing for handheld use.

GPS-Based Astrotracer for Untracked Star Photography

The K-1 Mark II's built-in GPS module powers a genuinely distinctive feature called Astrotracer, which uses the camera's own in-body stabilization mechanism to physically shift the sensor in sync with Earth's rotation during a long exposure, extending usable shutter speed well beyond the standard NPF-rule trailing limit without needing an external star tracker mounted to the tripod — a real, calculable extension of exposure time built directly into the camera body.

Weather Sealing and Cold-Weather Reliability

Pentax builds genuinely thorough weather sealing into the K-1 Mark II, rated for use in freezing temperatures well below what many competing bodies are formally tested against — a real, practical advantage for landscape and astro photographers regularly shooting in harsh winter conditions, where a body's cold-weather reliability genuinely matters more than most spec-sheet comparisons acknowledge.

Where the K-1 Mark II Fits

As Pentax's full-frame flagship, the K-1 Mark II sits above the APS-C K-3 Mark III in the lineup, aimed at landscape, studio and astro photographers who specifically value its distinctive Pixel Shift and Astrotracer capabilities alongside the general robustness and backward lens compatibility Pentax DSLRs are known for across decades of K-mount glass.

A K-Mount Lineage Stretching Back to 1975

The K-1 Mark II uses Pentax's K-mount, introduced in 1975 and never fundamentally replaced since — a genuinely unusual case of mount longevity in an industry where most manufacturers have switched mounts entirely at least once for mirrorless. This means decades of K-mount lenses, including many older manual-focus optics, mount and often meter correctly on the K-1 Mark II, a real practical advantage for photographers with an existing or inherited Pentax lens collection.

An Unusual Cross-Tilt Rear Screen

Rather than a conventional single-hinge tilting or fully articulating screen, the K-1 Mark II uses a distinctive cross-tilt mechanism that moves on multiple axes while staying roughly centered over the lens — a genuinely unusual design that supports low, high and side-angle shooting without the screen swinging out to one side the way a fully articulating hinge does.

See these numbers used live in the DoF & Hyperfocal Calculator by selecting the Full Frame sensor format.

Frequently Asked Questions

Does Astrotracer eliminate the need for a dedicated star tracker entirely?

For many wide-field astro compositions, yes — Astrotracer's sensor-shift tracking extends usable exposure time meaningfully without external equipment, though a dedicated tracker still generally outperforms it for longer exposures or telephoto astro work where more physical range of motion is needed than the sensor-shift mechanism can provide.

Can Pixel Shift Resolution be used handheld?

Yes, on later firmware, using the camera's own motion-compensation processing to align the four shifted exposures despite handheld movement, though a tripod still produces more consistently reliable results for genuinely static subjects than handheld shooting does.

Is the K-1 Mark II's sensor different from the original K-1's?

The core 36.4-megapixel sensor is the same, so pixel pitch, circle of confusion and resulting depth-of-field and astro-shutter-speed figures are identical between the two — the Mark II's improvements are primarily in autofocus, processing and weather sealing refinements, not sensor resolution or fundamental image quality.