Panasonic GM5 vs Pentax K-3 III

Cameras
Compare Cameras
Panasonic GM5 vs Pentax K-3 III

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

Go in depth with our full Panasonic GM5 Review.
How does it shoot? Panasonic GM5 in the real world.
See real-world photos taken with the GM5.
Compare Panasonic GM5 image quality against competitors.
What’s the bottom line? Read our Panasonic GM5 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.

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Differences

Panasonic GM5 advantages over Pentax K-3 III

In-camera panoramas
Yes vs No
Stitches multiple shots into a panoramic photo
Thinner
36 mm vs 73 mm
Thinner
Longer exposure
60 vs 30 sec
Long exposures for night shots
Bigger JPEG buffer
56 vs 30 shots
Take more JPEG shots before waiting (burst mode)
Faster shutter
1/16000 vs 1/8000 sec
Shoot wide open in bright light

Pentax K-3 III advantages over Panasonic GM5

Larger sensor
APS-C vs 4/3
More sensor area. Bigger is (generally) better.
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
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 220 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
Higher max flash sync
1/200 vs 1/50 sec
Reduce the effect of ambient light in flash shots
Newer
3 years vs 9 years old
Newer cameras often support more advanced features
Higher-res screen
540k vs 307k pixels
More detail on the screen lets you judge focus and composition
More viewfinder magnification
1.05x vs 0.46x
Get a bigger view of the scene through the eye-level viewfinder
More pixels
25.7 vs 16.0 megapixels
Higher resolution photos
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 Fixed
Lets you choose sharper photos or reduced moiré
Faster JPEG shooting
12.0 fps vs 5.7 fps
Faster JPEG shooting (burst mode)
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
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
Tiltable Screen
Neither provide
Tilt the screen for shooting flexbility
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
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 GM5 User Reviews

Amazon
Adorama
Read K-3 III User Reviews

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Panasonic GM5

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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 for a tiny camera; Excellent high ISO for its class; Built-in EVF; Built-in hot-shoe; Improved ergonomics; Improved image quality for long exposures; Improved burst rate with hybrid shutter; 1080/60p video.
Slightly bigger than GM1 (but not by much); No built-in flash; Shallow buffers with RAW files; Dynamic range not quite as good as some competing models; Below average battery life.
Read our Panasonic GM5 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 GM1

Panasonic GM5

Panasonic GM1

$898
4/3

Eye-level viewfinder
In-camera panoramas

$479
4/3

Less expensive
Internal flash

Compare Panasonic GM5 vs Panasonic GM1

Pentax K-3 III

Panasonic GM1

$1847
APS-C

Larger sensor
Eye-level viewfinder

$479
4/3

Internal flash
Thinner

Compare Pentax K-3 III vs Panasonic GM1

Compared to Panasonic GF7

Panasonic GM5

Panasonic GF7

$898
4/3

Eye-level viewfinder
Hot shoe

$590
4/3

Less expensive
Tiltable Screen

Compare Panasonic GM5 vs Panasonic GF7

Pentax K-3 III

Panasonic GF7

$1847
APS-C

Larger sensor
Eye-level viewfinder

$590
4/3

In-camera panoramas
Tiltable Screen

Compare Pentax K-3 III vs Panasonic GF7

Compared to Panasonic GX850

Panasonic GM5

Panasonic GX850

$898
4/3

Eye-level viewfinder
Fast startup

$548
4/3

Less expensive
Shoot 4K video

Compare Panasonic GM5 vs Panasonic GX850

Pentax K-3 III

Panasonic GX850

$1847
APS-C

Larger sensor
Eye-level viewfinder

$548
4/3

In-camera panoramas
Tiltable Screen

Compare Pentax K-3 III vs Panasonic GX850

Compared to Pentax KP

Panasonic GM5

Pentax KP

$898
4/3

Touchscreen
In-camera panoramas

$999
APS-C

Larger sensor
In-Camera Image Stabilization

Compare Panasonic GM5 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

Panasonic GM5

Canon 90D

$898
4/3

Focus peaking
Bigger pixels

$1199
APS-C

Tilt-swivel screen
Larger sensor

Compare Panasonic GM5 vs Canon 90D

Pentax K-3 III

Canon 90D

$1847
APS-C

Focus peaking
In-Camera Image Stabilization

$1199
APS-C

Less expensive
Tilt-swivel screen

Compare Pentax K-3 III vs Canon 90D

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