Panasonic GX850 vs Pentax K-3 III

Cameras
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Panasonic GX850 vs Pentax K-3 III

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

Go in depth with our full Panasonic GX850 Review.
How does it shoot? Panasonic GX850 in the real world.
See real-world photos taken with the GX850.
Compare Panasonic GX850 image quality against competitors.
What’s the bottom line? Read our Panasonic GX850 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 GX850 advantages over Pentax K-3 III

In-camera panoramas
Yes vs No
Stitches multiple shots into a panoramic photo
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
33 mm vs 73 mm
Thinner
Longer exposure
60 vs 30 sec
Long exposures for night shots
Bigger JPEG buffer
114 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 GX850

Larger sensor
APS-C vs 4/3
More sensor area. Bigger is (generally) better.
Eye-level viewfinder
Eye-level vs Rear display only
You'll be able to frame photos even when the sun is out
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
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 210 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
4 years vs 8 years old
Newer cameras often support more advanced features
Higher-res screen
540k vs 347k pixels
More detail on the screen lets you judge focus and composition
Hot shoe
Hot shoe vs None
Off-camera flashes open new possibilities
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 None
Lets you choose sharper photos or reduced moiré
Faster JPEG shooting
12.0 fps vs 9.3 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
Shoot 4K video
Both provide
Make sure you have a fast computer
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
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
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

Amazon
Adorama
Read GX850 User Reviews

Amazon
Adorama
Read K-3 III User Reviews

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Buy the Panasonic GX850

Kit with 12-32mm Lens (Black)

Kit with 12-32mm Lens (Black)
Kit with 12-32mm Lens (Silver)

All GX850 Deals

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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

Impressive image quality; Sleek design; 4K video recording; Good overall performance; Tilting touchscreen; Enjoyable user experience.
No EVF; No hot shoe, Short 4K clip limit; MicroSD card slot, Poor battery life.
Read our Panasonic GX850 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 GM5

Panasonic GX850

Panasonic GM5

$548
4/3

Less expensive
Shoot 4K video

$898
4/3

Eye-level viewfinder
Fast startup

Compare Panasonic GX850 vs Panasonic GM5

Pentax K-3 III

Panasonic GM5

$1847
APS-C

Larger sensor
In-Camera Image Stabilization

$898
4/3

In-camera panoramas
Thinner

Compare Pentax K-3 III vs Panasonic GM5

Compared to Panasonic GF7

Panasonic GX850

Panasonic GF7

$548
4/3

Shoot 4K video
Lacks anti-aliasing filter

$590
4/3

Fast startup
Has anti-aliasing filter

Compare Panasonic GX850 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 Pentax KP

Panasonic GX850

Pentax KP

$548
4/3

Shoot 4K video
Touchscreen

$999
APS-C

Larger sensor
Eye-level viewfinder

Compare Panasonic GX850 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 GX850

Canon 90D

$548
4/3

Focus peaking
Bigger pixels

$1099
APS-C

Larger sensor
Tilt-swivel screen

Compare Panasonic GX850 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

Compared to Olympus E-PL10

Panasonic GX850

Olympus E-PL10

$548
4/3

Lacks anti-aliasing filter
Wider angle kit lens

$549
4/3

In-Camera Image Stabilization
Built-in Bluetooth

Compare Panasonic GX850 vs Olympus E-PL10

Pentax K-3 III

Olympus E-PL10

$1847
APS-C

Larger sensor
Eye-level viewfinder

$549
4/3

Less expensive
In-camera panoramas

Compare Pentax K-3 III vs Olympus E-PL10

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