Pentax K-1 vs Olympus E-M1 II

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Pentax K-1 vs Olympus E-M1 II

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35mm 861.6mm²
36.4 megapixels
ISO 100 - 204,800

Go in depth with our full Pentax K-1 Review.
How does it shoot? Pentax K-1 in the real world.
See real-world photos taken with the K-1.
Compare Pentax K-1 image quality against competitors.
What’s the bottom line? Read our Pentax K-1 conclusion.

4/3 226.2mm²
20.4 megapixels
ISO 200 - 25,600

Go in depth with our full Olympus E-M1 II Review.
How does it shoot? Olympus E-M1 II in the real world.
See real-world photos taken with the E-M1 II.
Compare Olympus E-M1 II image quality against competitors.
What’s the bottom line? Read our Olympus E-M1 II conclusion.

Succeeded by the Pentax K-1 II
Compare K-1 vs K-1 II

Succeeded by the Olympus E-M1 Mark III
Compare E-M1 II vs E-M1 Mark III

Compare PENTAX K-1 II vs OLYMPUS E-M1 MARK III

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Differences

Pentax K-1 advantages over Olympus E-M1 II

Larger sensor
35mm vs 4/3
More sensor area. Bigger is (generally) better.
Bigger pixels
~ 4.88 vs 3.36 microns
Better low-light and dynamic range (all else equal)
Higher effective ISO

Higher effective ISO

Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.

Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.

You can learn more at our glossary entry.

Maximum effective ISO test data courtesy of DxO Mark.
K-1 test data on DxO Mark E-M1 II test data on DxO Mark

3,280 vs 1,312 iso
Take photos in low light with less noise
More dynamic range

More dynamic range

Cameras with more dynamic range allow you to take photos with dramatic differences in highlight and shadow areas while retaining detail in both.

Think of a brilliant sunset on a rocky beach: Bright sunset in the background, with dark rocks in the foreground. High dynamic range means more of the extremes will be faithfully reproduced.

Dynamic range test data courtesy of DxO Mark.
K-1 test data on DxO Mark E-M1 II test data on DxO Mark

14.6 vs 12.8 evs
Retain detail in highlight and shadows
Built-in GPS
GPS vs None
Geotag your photos
Longer stills battery life
More info

Longer stills battery life

Cameras with longer battery life can take more photos before exhausting their batteries.

Special note: The measurement standard for battery life stipulates that if a camera has an internal flash, it must be used for 50% of photos taken. For this reason, comparisons of one camera with an internal flash to another without will not be comparable

760 vs 440 shots
Capture more photos
Top deck display
Yes vs No
Check settings with a screen on top of the camera
More pixels
36.4 vs 20.4 megapixels
Higher resolution photos
Optional anti-aliasing filter
Optional vs None
Lets you choose sharper photos or reduced moiré
Higher extended ISO
204800 vs 25600 ISO
Higher extended ISO can give more low-light flexibility

Olympus E-M1 II advantages over Pentax K-1

Tilt-swivel screen
Tilt-swivel vs tilt-only
Tilt and swivel the screen for maximum shooting flexibility
Shoot 4K video
4K (DCI) vs 1080p
Make sure you have a fast computer
Touchscreen
Touch vs No touch
Interact with your camera just like your smartphone
Fast startup
~0.80 vs 1.2 sec
Faster startup lets you catch the moment
On-sensor phase detect
Yes vs No
Usually improves live view and video AF performance
Lighter weight
574g vs 1015g
Lighter weight
Longer exposure
60 vs 30 sec
Long exposures for night shots
Faster JPEG shooting
60.6 fps vs 4.6 fps
Faster JPEG shooting (burst mode)
Faster RAW shooting
60.6 fps vs 4.6 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
51 vs 17 shots
Larger buffer for RAW shots (burst mode)
Faster shutter
1/32000 vs 1/8000 sec
Shoot wide open in bright light

Similarities

Common Strengths

Focus peaking
Both provide
Your camera will highlight what's in focus
Eye-level viewfinder
Both provide
You'll be able to frame photos even when the sun is out
In-Camera Image Stabilization
Both provide
Reduces the effects of camera shake at slower shutter speeds
Built-in Wi-Fi
Both provide
Share your photos wirelessly
External Mic Jack
Both provide
Improved sound fidelity when shooting video
HDMI out
Both provide
Use HDMI output to monitor or review video
Hot shoe
Both provide
Off-camera flashes open new possibilities
Dual card slots
Both provide
Gives you more storage flexibility
Headphone jack
Both provide
Monitor audio recording while you shoot video
Bulb shutter
Both provide
Hold the shutter open manually for long exposures

Common Weaknesses

In-camera panoramas
Neither provide
Stitches multiple shots into a panoramic photo
NFC
Neither provide
Simplifies pairing your camera with supported phones
Built-in Bluetooth
Neither provide
Always-on wireless connectivity
Internal flash
Neither provide
Useful in a pinch for fill flash
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

Amazon
Adorama
Read K-1 User Reviews

Amazon
Adorama
Read E-M1 II User Reviews

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Review Excerpt

Unlocks the full potential of full-frame Pentax lenses; Excellent image quality; Great ergonomics and build; Very compact for full-frame; Decent performance; Fast autofocus with great low-light capabilities; Very wide sensitivity range; Bright, accurate viewfinder; Articulated LCD; Stabilization, Wi-Fi and GPS in-camera
No built-in flash strobe; Quite heavy compared to APS-C flagships; Somewhat soft images and blown highlights by default in JPEG mode; Warm Auto white balance indoors; Slow startup and buffer clearing; Small top-deck status display; Weak viewfinder illumination; Below-average battery life for DSLR
Read our Pentax K-1 Review

Excellent image quality; Very good dynamic range & high ISO performance; Fantastic C-AF performance; Incredible burst rates, even with RAW; 4K UHD & Cinema 4K (DCI) video; Clean HDMI; Dual SD card slots.
Expensive; Menus still confusing; UHS-II support only on one card slot; No optical low-pass filter means greater risk of moire; No built-in flash.
Read our Olympus E-M1 II Review

The Competition

Compared to Fujifilm X-T2

Pentax K-1

Fujifilm X-T2

$1800
35mm

Lens selection
Larger sensor

$999
APS-C

Shoot 4K video
In-camera panoramas

Compare Pentax K-1 vs Fujifilm X-T2

Olympus E-M1 II

Fujifilm X-T2

$899
4/3

Lens selection
Less expensive

$999
APS-C

Larger sensor
Bigger pixels

Compare Olympus E-M1 II vs Fujifilm X-T2

Compared to Canon 5DS

Pentax K-1

Canon 5DS

$1800
35mm

Focus peaking
In-Camera Image Stabilization

$1549
35mm

Fast startup
More cross-type AF points

Compare Pentax K-1 vs Canon 5DS

Olympus E-M1 II

Canon 5DS

$899
4/3

Focus peaking
Less expensive

$1549
35mm

Larger sensor
Bigger pixels

Compare Olympus E-M1 II vs Canon 5DS

Compared to Canon 5DS R

Pentax K-1

Canon 5DS R

$1800
35mm

Focus peaking
In-Camera Image Stabilization

$1729
35mm

Fast startup
More cross-type AF points

Compare Pentax K-1 vs Canon 5DS R

Olympus E-M1 II

Canon 5DS R

$899
4/3

Focus peaking
Less expensive

$1729
35mm

Larger sensor
Bigger pixels

Compare Olympus E-M1 II vs Canon 5DS R

Compared to Panasonic G7

Pentax K-1

Panasonic G7

$1800
35mm

Larger sensor
In-Camera Image Stabilization

$498
4/3

Tilt-swivel screen
Shoot 4K video

Compare Pentax K-1 vs Panasonic G7

Olympus E-M1 II

Panasonic G7

$899
4/3

In-Camera Image Stabilization
High resolution composite

$498
4/3

Less expensive
In-camera panoramas

Compare Olympus E-M1 II vs Panasonic G7

Compared to Panasonic GX8

Pentax K-1

Panasonic GX8

$1800
35mm

Larger sensor
Bigger pixels

$998
4/3

Tilt-swivel screen
Shoot 4K video

Compare Pentax K-1 vs Panasonic GX8

Olympus E-M1 II

Panasonic GX8

$899
4/3

High resolution composite
Fast startup

$998
4/3

In-camera panoramas
NFC

Compare Olympus E-M1 II vs Panasonic GX8

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