Canon 90D vs Pentax K-3 III

Cameras
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Canon 90D vs Pentax K-3 III

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APS-C 337.5mm²
32.5 megapixels
ISO 100 - 25,600

Go in depth with our full Canon 90D Review.
How does it shoot? Canon 90D in the real world.
See real-world photos taken with the 90D.
Compare Canon 90D image quality against competitors.
What’s the bottom line? Read our Canon 90D 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

Canon 90D advantages over Pentax K-3 III

Less expensive
$1349 vs $2344
Save money for lenses or accessories
Tilt-swivel screen
Tilt-swivel vs none
Tilt and swivel the screen for maximum shooting flexibility
On-sensor phase detect
Yes vs No
Usually improves live view and video AF performance
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

1300 vs 800 shots
Capture more photos
Internal flash
Internal flash vs None
Useful in a pinch for fill flash
More cross-type AF points
45 vs 25
Cross-type AF points improve autofocus performance
More pixels
32.5 vs 25.7 megapixels
Higher resolution photos
Bigger JPEG buffer
57 vs 30 shots
Take more JPEG shots before waiting (burst mode)
Slow-motion videos
Yes vs No
Shoot slow-motion videos
Faster shutter
1/16000 vs 1/8000 sec
Shoot wide open in bright light

Pentax K-3 III advantages over Canon 90D

Focus peaking
Peaker vs Non-peaker
Your camera will highlight what's in focus
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
Bigger pixels
~ 3.76 vs 3.23 microns
Better low-light and dynamic range (all else equal)
High resolution composite
Yes vs No
Combine multiple shots to form a super hi-res version
Newer
4 years vs 5 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
More viewfinder magnification
1.05x vs 0.59x
Get a bigger view of the scene through the eye-level viewfinder
Dual card slots
Yes vs No
Gives you more storage flexibility
More AF points
101 vs 45
More AF points improve autofocus
Optional anti-aliasing filter
Optional vs Fixed
Lets you choose sharper photos or reduced moiré
Faster JPEG shooting
12.0 fps vs 10.0 fps
Faster JPEG shooting (burst mode)
Higher extended ISO
1600000 vs 51200 ISO
Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

Eye-level viewfinder
Both provide
You'll be able to frame photos even when the sun is out
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
Built-in Bluetooth
Both provide
Always-on wireless connectivity
Top deck display
Both provide
Check settings with a screen on top of the camera
External Mic Jack
Both provide
Improved sound fidelity when shooting video
Pentaprism viewfinder
Both provide
Much better viewfinder picture fidelity
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
NFC
Neither provide
Simplifies pairing your camera with supported phones
Built-in GPS
Neither provide
Geotag your photos

User reviews

Amazon
Adorama
Read 90D User Reviews

Amazon
Adorama
Read K-3 III User Reviews

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Buy the Canon 90D

Body Only

Body Only
KIt with 18-135mm Lens
KIt with 18-55mm Lens

All 90D Deals

Your purchases support this site

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

Highest resolution Canon APS-C camera yet; Great image quality; Faster 10fps burst shooting; Very fast autofocus; Dual Pixel CMOS AF in Live View; 4K video; 1080p120 slow-mo video.
Low-pass filter reduces fine detail from high-res sensor; High ISO performance isn't as good as some rival cameras; Video recording limited to 29:59.
Read our Canon 90D 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 Canon 80D

Canon 90D

Canon 80D

$1099
APS-C

Shoot 4K video
Built-in Bluetooth

$935
APS-C

Less expensive
Bigger pixels

Compare Canon 90D vs Canon 80D

Pentax K-3 III

Canon 80D

$1847
APS-C

Focus peaking
In-Camera Image Stabilization

$935
APS-C

Less expensive
Tilt-swivel screen

Compare Pentax K-3 III vs Canon 80D

Compared to Pentax KP

Canon 90D

Pentax KP

$1099
APS-C

Tilt-swivel screen
Shoot 4K video

$999
APS-C

Less expensive
Focus peaking

Compare Canon 90D 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 77D

Canon 90D

Canon 77D

$1099
APS-C

Shoot 4K video
Longer stills battery life

$550
APS-C

Less expensive
NFC

Compare Canon 90D vs Canon 77D

Pentax K-3 III

Canon 77D

$1847
APS-C

Focus peaking
In-Camera Image Stabilization

$550
APS-C

Less expensive
Tilt-swivel screen

Compare Pentax K-3 III vs Canon 77D

Compared to Nikon D7500

Canon 90D

Nikon D7500

$1099
APS-C

Tilt-swivel screen
On-sensor phase detect

$864
APS-C

Less expensive
Bigger pixels

Compare Canon 90D vs Nikon D7500

Pentax K-3 III

Nikon D7500

$1847
APS-C

Focus peaking
In-Camera Image Stabilization

$864
APS-C

Less expensive
Tiltable Screen

Compare Pentax K-3 III vs Nikon D7500

Compared to Canon SL3

Canon 90D

Canon SL3

$1099
APS-C

Longer stills battery life
More telephoto lens reach

$624
APS-C

Less expensive
Lighter weight

Compare Canon 90D vs Canon SL3

Pentax K-3 III

Canon SL3

$1847
APS-C

Focus peaking
In-Camera Image Stabilization

$624
APS-C

Less expensive
Tilt-swivel screen

Compare Pentax K-3 III vs Canon SL3

Compare Other Cameras?