Pentax K-5 vs Panasonic GX8

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Pentax K-5 vs Panasonic GX8

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APS-C 372.1mm²
16.3 megapixels
ISO 100 - 12,800

Go in depth with our full Pentax K-5 Review.
See real-world photos taken with the K-5.

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

Go in depth with our full Panasonic GX8 Review.
How does it shoot? Panasonic GX8 in the real world.
See real-world photos taken with the GX8.
Compare Panasonic GX8 image quality against competitors.
What’s the bottom line? Read our Panasonic GX8 conclusion.

Succeeded by the Pentax K-5 II
Compare K-5 vs K-5 II

Succeeded by the Panasonic GX9
Compare GX8 vs GX9

Compare PENTAX K-5 II vs PANASONIC GX9

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Differences

Pentax K-5 advantages over Panasonic GX8

Less expensive
$800 vs $998
Save money for lenses or accessories
Larger sensor
APS-C vs 4/3
More sensor area. Bigger is (generally) better.
Bigger pixels
~ 4.81 vs 3.34 microns
Better low-light and dynamic range (all else equal)
Fast startup
~0.60 vs 1.2 sec
Faster startup lets you catch the moment
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-5 test data on DxO Mark GX8 test data on DxO Mark

1,162 vs 806 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-5 test data on DxO Mark GX8 test data on DxO Mark

14.1 vs 12.6 evs
Retain detail in highlight and shadows
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

740 vs 340 shots
Capture more photos
Internal flash
Internal flash vs None
Useful in a pinch for fill flash
Top deck display
Yes vs No
Check settings with a screen on top of the camera
Higher extended ISO
51200 vs 25600 ISO
Higher extended ISO can give more low-light flexibility

Panasonic GX8 advantages over Pentax K-5

Focus peaking
Peaker vs Non-peaker
Your camera will highlight what's in focus
Tilt-swivel screen
Tilt-swivel vs none
Tilt and swivel the screen for maximum shooting flexibility
Shoot 4K video
4K (UHD) vs 1080p
Make sure you have a fast computer
Touchscreen
Touch vs No touch
Interact with your camera just like your smartphone
In-camera panoramas
Yes vs No
Stitches multiple shots into a panoramic photo
Built-in Wi-Fi
Wi-Fi vs None
Share your photos wirelessly
NFC
Yes vs No
Simplifies pairing your camera with supported phones
Newer
9 years vs 14 years old
Newer cameras often support more advanced features
Shoots 24p video
Yes vs No
Gives your movies a big-screen feel
More viewfinder magnification
0.77x vs 0.61x
Get a bigger view of the scene through the eye-level viewfinder
More pixels
20.3 vs 16.3 megapixels
Higher resolution photos
Shoots 60p video
Yes vs No
A faster framerate can give you more editing options
Longer exposure
60 vs 30 sec
Long exposures for night shots
Faster JPEG shooting
8.3 fps vs 6.5 fps
Faster JPEG shooting (burst mode)
Bigger JPEG buffer
Unlimited vs 31 shots
Take more JPEG shots before waiting (burst mode)
Faster RAW shooting
7.9 fps vs 6.5 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
36 vs 23 shots
Larger buffer for RAW shots (burst mode)
Faster shutter
1/16000 vs 1/8000 sec
Shoot wide open in bright light

Similarities

Common Strengths

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
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
Bulb shutter
Both provide
Hold the shutter open manually for long exposures

Common Weaknesses

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
Dual card slots
Neither provide
Gives you more storage flexibility
Headphone jack
Neither provide
Monitor audio recording while you shoot video
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

Amazon
Adorama
Read K-5 User Reviews

Amazon
Adorama
Read GX8 User Reviews

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Review Excerpt

Excellent high ISO performance, one of the best APS-C sensors yet; 6.5 fps burst mode has very good buffer depths; Weather, dust, and cold resistant; In-body Shake Reduction corrects not only horizontal / vertical, but also rotational motion.
Default saturation and contrast a bit high; Auto white balance too warm in tungsten light; Fewer AF points than main competitors; Only a single card slot, and no UHS-I card support (slow buffer clearing).
Read our Pentax K-5 Full Review

Highest resolution Micro Four Thirds camera yet; Great high ISO performance; Very fast autofocus; Fast burst mode with deep buffers; Impressive Dual I.S. system; Great 4K video.
No built-in flash; Slow buffer clearing; Below average battery life; Limited I.S. for 4K video.
Read our Panasonic GX8 Review

The Competition

Compared to Canon T3i

Pentax K-5

Canon T3i

$800
APS-C

Larger sensor
In-Camera Image Stabilization

$549
APS-C

Tilt-swivel screen
More telephoto lens reach

Compare Pentax K-5 vs Canon T3i

Panasonic GX8

Canon T3i

$998
4/3

Focus peaking
In-Camera Image Stabilization

$549
APS-C

Larger sensor
Bigger pixels

Compare Panasonic GX8 vs Canon T3i

Compared to Nikon D5100

Pentax K-5

Nikon D5100

$800
APS-C

In-Camera Image Stabilization
Top deck display

$650
APS-C

Less expensive
Tilt-swivel screen

Compare Pentax K-5 vs Nikon D5100

Panasonic GX8

Nikon D5100

$998
4/3

Focus peaking
In-Camera Image Stabilization

$650
APS-C

Less expensive
Larger sensor

Compare Panasonic GX8 vs Nikon D5100

Compared to Pentax K-30

Pentax K-5

Pentax K-30

$800
APS-C

Fast startup
Longer stills battery life

$599
APS-C

Focus peaking
More telephoto lens reach

Compare Pentax K-5 vs Pentax K-30

Panasonic GX8

Pentax K-30

$998
4/3

Tilt-swivel screen
Shoot 4K video

$599
APS-C

Larger sensor
Bigger pixels

Compare Panasonic GX8 vs Pentax K-30

Compared to Olympus E-M1

Pentax K-5

Olympus E-M1

$800
APS-C

Less expensive
Larger sensor

$1099
4/3

Focus peaking
Touchscreen

Compare Pentax K-5 vs Olympus E-M1

Panasonic GX8

Olympus E-M1

$998
4/3

Tilt-swivel screen
Shoot 4K video

$1099
4/3

Fast startup
On-sensor phase detect

Compare Panasonic GX8 vs Olympus E-M1

Compared to Olympus E-M1 II

Pentax K-5

Olympus E-M1 II

$800
APS-C

Larger sensor
Bigger pixels

$899
4/3

Focus peaking
Tilt-swivel screen

Compare Pentax K-5 vs Olympus E-M1 II

Panasonic GX8

Olympus E-M1 II

$998
4/3

In-camera panoramas
NFC

$899
4/3

High resolution composite
Fast startup

Compare Panasonic GX8 vs Olympus E-M1 II

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