Olympus E-M10 vs Pentax K-3 III

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Olympus E-M10 vs Pentax K-3 III

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4/3 224.9mm²
16.1 megapixels
ISO 200 - 25,600

Go in depth with our full Olympus E-M10 Review.
How does it shoot? Olympus E-M10 in the real world.
See real-world photos taken with the E-M10.
Compare Olympus E-M10 image quality against competitors.
What’s the bottom line? Read our Olympus E-M10 conclusion.

APS-C 361.2mm²
25.7 megapixels
ISO 100 - 1,600,000

Go in depth with our full Pentax K-3 III Review.
See real-world photos taken with the K-3 III.

Succeeded by the Olympus E-M10 II
Compare E-M10 vs E-M10 II
Compare Olympus E-M10 II vs Pentax K-3 III

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Differences

Olympus E-M10 advantages over Pentax K-3 III

Tiltable Screen
Tiltable vs Fixed
Tilt the screen for shooting flexbility
Internal flash
Internal flash vs None
Useful in a pinch for fill flash
Thinner
45 mm vs 73 mm
Thinner
Longer exposure
60 vs 30 sec
Long exposures for night shots

Pentax K-3 III advantages over Olympus E-M10

Larger sensor
APS-C vs 4/3
More sensor area. Bigger is (generally) better.
Shoot 4K video
4K (UHD) vs 1080p
Make sure you have a fast computer
High resolution composite
Yes vs No
Combine multiple shots to form a super hi-res version
Built-in Bluetooth
Yes vs No
Always-on wireless connectivity
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

800 vs 320 shots
Capture more photos
Top deck display
Yes vs No
Check settings with a screen on top of the camera
External Mic Jack
Jack vs No jack
Improved sound fidelity when shooting video
Newer
4 years vs 11 years old
Newer cameras often support more advanced features
Shoots 24p video
Yes vs No
Gives your movies a big-screen feel
Higher-res screen
540k vs 346k pixels
More detail on the screen lets you judge focus and composition
More viewfinder magnification
1.05x vs 0.58x
Get a bigger view of the scene through the eye-level viewfinder
More pixels
25.7 vs 16.1 megapixels
Higher resolution photos
Shoots 60p video
Yes vs No
A faster framerate can give you more editing options
Dual card slots
Yes vs No
Gives you more storage flexibility
Headphone jack
Yes vs No
Monitor audio recording while you shoot video
Optional anti-aliasing filter
Optional vs None
Lets you choose sharper photos or reduced moiré
Faster JPEG shooting
12.0 fps vs 8.1 fps
Faster JPEG shooting (burst mode)
Bigger JPEG buffer
30 vs 19 shots
Take more JPEG shots before waiting (burst mode)
Faster shutter
1/8000 vs 1/4000 sec
Shoot wide open in bright light
Higher extended ISO
1600000 vs 25600 ISO
Higher extended ISO can give more low-light flexibility

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
Touchscreen
Both provide
Interact with your camera just like your smartphone
Built-in Wi-Fi
Both provide
Share your photos wirelessly
HDMI out
Both provide
Use HDMI output to monitor or review video
Hot shoe
Both provide
Off-camera flashes open new possibilities
Bulb shutter
Both provide
Hold the shutter open manually for long exposures

Common Weaknesses

Tilt-swivel screen
Neither provide
Tilt and swivel the screen for maximum shooting flexibility
In-camera panoramas
Neither provide
Stitches multiple shots into a panoramic photo
NFC
Neither provide
Simplifies pairing your camera with supported phones
Built-in GPS
Neither provide
Geotag your photos
On-sensor phase detect
Neither provide
Usually improves live view and video AF performance
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

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Adorama
Read E-M10 User Reviews

Amazon
Adorama
Read K-3 III User Reviews

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Body Only
Kit with 14-42mm Lens

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Buy the Pentax K-3 III

Body Only

Body Only
Kit with 20-40mm F2.8-4 Lens
Kit with 55-300mm f/4.5-6.3 Lens

All K-3 III Deals

Review Excerpt

Great image quality especially from RAW files; Excellent dynamic range for a Four Thirds sensor; Very good high ISO performance; Realistic colors and excellent hue accuracy; Built-in Wi-Fi with remote control and sharing features; Improved HD video; Lightweight and very portable; Built-in pop-up flash; Minimal EVF lag time.
Contrast-Detect AF struggles with small and low-contrast subjects; Mediocre battery life; No external microphone or headphone jack; Mediocre burst speed with continuous AF; No weather sealing; Heavy-handed high ISO noise reduction.
Read our Olympus E-M10 Review

We haven’t finished our review of the Pentax K-3 III, but we have extensive sample photos and a hands-on report.
See our Pentax K-3 III First Shots

The Competition

Compared to Panasonic GX7

Olympus E-M10

Panasonic GX7

$399
4/3

Less expensive
Higher effective ISO

$648
4/3

In-camera panoramas
Fast startup

Compare Olympus E-M10 vs Panasonic GX7

Pentax K-3 III

Panasonic GX7

$1847
APS-C

Larger sensor
Shoot 4K video

$648
4/3

In-camera panoramas
Tiltable Screen

Compare Pentax K-3 III vs Panasonic GX7

Compared to Olympus E-M10 II

Olympus E-M10

Olympus E-M10 II

$399
4/3

$349
4/3

Fast startup
Shoots 24p video

Compare Olympus E-M10 vs Olympus E-M10 II

Pentax K-3 III

Olympus E-M10 II

$1847
APS-C

Larger sensor
Shoot 4K video

$349
4/3

Less expensive
Tiltable Screen

Compare Pentax K-3 III vs Olympus E-M10 II

Compared to Panasonic GX85

Olympus E-M10

Panasonic GX85

$399
4/3

Higher effective ISO
More telephoto lens reach

$598
4/3

Shoot 4K video
In-camera panoramas

Compare Olympus E-M10 vs Panasonic GX85

Pentax K-3 III

Panasonic GX85

$1847
APS-C

Larger sensor
High resolution composite

$598
4/3

Less expensive
In-camera panoramas

Compare Pentax K-3 III vs Panasonic GX85

Compared to Pentax KP

Olympus E-M10

Pentax KP

$399
4/3

Touchscreen
Thinner

$999
APS-C

Larger sensor
High resolution composite

Compare Olympus E-M10 vs Pentax KP

Pentax K-3 III

Pentax KP

$1847
APS-C

Shoot 4K video
Touchscreen

$999
APS-C

Less expensive
Tiltable Screen

Compare Pentax K-3 III vs Pentax KP

Compared to Canon 90D

Olympus E-M10

Canon 90D

$399
4/3

Focus peaking
In-Camera Image Stabilization

$1099
APS-C

Larger sensor
Tilt-swivel screen

Compare Olympus E-M10 vs Canon 90D

Pentax K-3 III

Canon 90D

$1847
APS-C

Focus peaking
In-Camera Image Stabilization

$1099
APS-C

Less expensive
Tilt-swivel screen

Compare Pentax K-3 III vs Canon 90D

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