Pentax K-3 vs Panasonic GH4

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Pentax K-3 vs Panasonic GH4

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APS-C 366.6mm²
24.4 megapixels
ISO 100 - 51,200

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

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

Go in depth with our full Panasonic GH4 Review.
How does it shoot? Panasonic GH4 in the real world.
See real-world photos taken with the GH4.
Compare Panasonic GH4 image quality against competitors.
What’s the bottom line? Read our Panasonic GH4 conclusion.

Succeeded by the Pentax K-3 II
Compare K-3 vs K-3 II

Succeeded by the Panasonic GH5
Compare GH4 vs GH5

Compare PENTAX K-3 II vs PANASONIC GH5

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Differences

Pentax K-3 advantages over Panasonic GH4

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
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-3 test data on DxO Mark GH4 test data on DxO Mark

1,216 vs 791 iso
Take photos in low light with less noise
Top deck display
Yes vs No
Check settings with a screen on top of the camera
More pixels
24.4 vs 16.1 megapixels
Higher resolution photos
Dual card slots
Yes vs No
Gives you more storage flexibility
Optional anti-aliasing filter
Optional vs Fixed
Lets you choose sharper photos or reduced moiré
Higher extended ISO
51200 vs 25600 ISO
Higher extended ISO can give more low-light flexibility

Panasonic GH4 advantages over Pentax K-3

Tilt-swivel screen
Tilt-swivel vs none
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
Built-in Wi-Fi
Wi-Fi vs None
Share your photos wirelessly
NFC
Yes vs No
Simplifies pairing your camera with supported phones
Longer exposure
60 vs 30 sec
Long exposures for night shots
Faster JPEG shooting
12.8 fps vs 7.1 fps
Faster JPEG shooting (burst mode)
Bigger JPEG buffer
Unlimited vs 75 shots
Take more JPEG shots before waiting (burst mode)
Faster RAW shooting
11.8 fps vs 7.1 fps
Faster RAW shooting in burst mode
Slow-motion videos
Yes vs No
Shoot slow-motion videos

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
Internal flash
Both provide
Useful in a pinch for fill flash
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
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
Built-in Bluetooth
Neither provide
Always-on wireless connectivity
Built-in GPS
Neither provide
Geotag your photos
On-sensor phase detect
Neither provide
Usually improves live view and video AF performance

User reviews

Amazon
Adorama
Read K-3 User Reviews

Amazon
Adorama
Read GH4 User Reviews

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Review Excerpt

Top-notch image quality; Great ergonomics in a compact body; Unique on-demand low-pass filtering; Broad sensitivity range; Large and bright viewfinder for an APS-C camera; Dual card slots; Optional Wi-Fi remote control
AE Lock button is poorly located; Below-average battery life for a DSLR; Rather dated-looking menu system; Requires a different battery grip accessory than its predecessors; Less third-party support than some rivals
Read our Pentax K-3 Review

Excellent still image quality for its class; Fantastic, highly-detailed video quality; Superior video recording chops with 4K video (both Cinema 4K and Ultra HD); Responsive all-around performer with great AF performance and burst shooting; Rolling shutter is minimal with 60p and 30p video; Splash- and dust-proof magnesium alloy body; Built-in Wi-Fi with NFC.
High ISO performance not as good as some APS-C models (IQ drops quickly past ISO 3200); Overall still image quality not significantly better than the GH3; Sluggish buffer clearing with RAW files; Rolling shutter noticeable on 4K video; Not as compact as most mirrorless cameras.
Read our Panasonic GH4 Review

The Competition

Compared to Panasonic GH3

Pentax K-3

Panasonic GH3

$699
APS-C

Focus peaking
Larger sensor

$798
4/3

Tilt-swivel screen
Touchscreen

Compare Pentax K-3 vs Panasonic GH3

Panasonic GH4

Panasonic GH3

$898
4/3

Focus peaking
Shoot 4K video

$798
4/3

Compare Panasonic GH4 vs Panasonic GH3

Compared to Nikon D7100

Pentax K-3

Nikon D7100

$699
APS-C

Focus peaking
In-Camera Image Stabilization

$745
APS-C

Fast startup
Longer stills battery life

Compare Pentax K-3 vs Nikon D7100

Panasonic GH4

Nikon D7100

$898
4/3

Tilt-swivel screen
Focus peaking

$745
APS-C

Larger sensor
Fast startup

Compare Panasonic GH4 vs Nikon D7100

Compared to Olympus E-M1

Pentax K-3

Olympus E-M1

$699
APS-C

Larger sensor
Higher effective ISO

$1099
4/3

Touchscreen
Tiltable Screen

Compare Pentax K-3 vs Olympus E-M1

Panasonic GH4

Olympus E-M1

$898
4/3

Tilt-swivel screen
Shoot 4K video

$1099
4/3

In-Camera Image Stabilization
On-sensor phase detect

Compare Panasonic GH4 vs Olympus E-M1

Compared to Nikon D5300

Pentax K-3

Nikon D5300

$699
APS-C

Focus peaking
In-Camera Image Stabilization

$549
APS-C

Tilt-swivel screen
Fast startup

Compare Pentax K-3 vs Nikon D5300

Panasonic GH4

Nikon D5300

$898
4/3

Focus peaking
Shoot 4K video

$549
APS-C

Larger sensor
Fast startup

Compare Panasonic GH4 vs Nikon D5300

Compared to Nikon D7200

Pentax K-3

Nikon D7200

$699
APS-C

Focus peaking
In-Camera Image Stabilization

$1016
APS-C

Fast startup
Built-in Wi-Fi

Compare Pentax K-3 vs Nikon D7200

Panasonic GH4

Nikon D7200

$898
4/3

Less expensive
Tilt-swivel screen

$1016
APS-C

Larger sensor
Fast startup

Compare Panasonic GH4 vs Nikon D7200

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