Canon 5D Mark III vs Pentax K-5 II

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Canon 5D Mark III vs Pentax K-5 II

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35mm 864.0mm²
22.3 megapixels
ISO 100 - 25,600

Go in depth with our full Canon 5D Mark III Review.
See real-world photos taken with the 5D Mark III.
Compare Canon 5D Mark III image quality against competitors.
What’s the bottom line? Read our Canon 5D Mark III conclusion.

APS-C 369.7mm²
16.3 megapixels
ISO 100 - 12,800

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

Succeeded by the Canon 5D Mark IV
Compare 5D Mark III vs 5D Mark IV
Compare Canon 5D Mark IV vs Pentax K-5 II

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Differences

Canon 5D Mark III advantages over Pentax K-5 II

Larger sensor
35mm vs APS-C
More sensor area. Bigger is (generally) better.
Bigger pixels
~ 6.25 vs 4.81 microns
Better low-light and dynamic range (all else equal)
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.
5D Mark III test data on DxO Mark K-5 II test data on DxO Mark

2,293 vs 1,235 iso
Take photos in low light with less noise
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

950 vs 740 shots
Capture more photos
More cross-type AF points
41 vs 9
Cross-type AF points improve autofocus performance
Shoots 24p video
Yes vs No
Gives your movies a big-screen feel
Less shutter lag
0.12 vs 0.23 sec
Focus and take a photo quickly (wide angle)
More viewfinder magnification
0.71x vs 0.61x
Get a bigger view of the scene through the eye-level viewfinder
More pixels
22.3 vs 16.3 megapixels
Higher resolution photos
Shoots 60p video
Yes vs No
A faster framerate can give you more editing options
Dual card slots
Yes vs No
Gives you more storage flexibility
More AF points
61 vs 11
More AF points improve autofocus
Headphone jack
Yes vs No
Monitor audio recording while you shoot video
Bigger JPEG buffer
63 vs 28 shots
Take more JPEG shots before waiting (burst mode)
Higher extended ISO
102400 vs 51200 ISO
Higher extended ISO can give more low-light flexibility

Pentax K-5 II advantages over Canon 5D Mark III

In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
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 II test data on DxO Mark 5D Mark III test data on DxO Mark

14.1 vs 11.7 evs
Retain detail in highlight and shadows
Internal flash
Internal flash vs None
Useful in a pinch for fill flash
Faster JPEG shooting
6.7 fps vs 6.0 fps
Faster JPEG shooting (burst mode)
Faster RAW shooting
6.7 fps vs 6.0 fps
Faster RAW shooting in burst mode

Similarities

Common Strengths

Eye-level viewfinder
Both provide
You'll be able to frame photos even when the sun is out
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
Bulb shutter
Both provide
Hold the shutter open manually for long exposures

Common Weaknesses

Focus peaking
Neither provide
Your camera will highlight what's in focus
Tilt-swivel screen
Neither provide
Tilt and swivel the screen for maximum shooting flexibility
Touchscreen
Neither provide
Interact with your camera just like your smartphone
In-camera panoramas
Neither provide
Stitches multiple shots into a panoramic photo
Tiltable Screen
Neither provide
Tilt the screen for shooting flexbility
Built-in Wi-Fi
Neither provide
Share your photos wirelessly
NFC
Neither provide
Simplifies pairing your camera with supported phones
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
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

Amazon
Adorama
Read K-5 II User Reviews

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Kit with 24-70mm Lens

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Buy the Pentax K-5 II

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Kit with 18-135mm Lens
Kit with 18-55mm Lens

All K-5 II Deals

Review Excerpt

Superb still and video image quality; Powerful, fast, and accurate AF system with loads of cross-type points, loads of configurability and great frame coverage; Rugged, weather-sealed body with great control layout and user-interface configurability.
Dynamic range is limited by noise in deep shadows; Somewhat heavy-handed noise suppression and sharpening at default settings. (Shooting RAW avoids both.); No AF illuminator.
Read our Canon 5D Mark III Review

Compact yet control-rich body packs in the features; Updated autofocus system focuses in near-darkness; Fully weather-sealed; Sharp, detailed images with very good dynamic range; In-body image stabilization; Dual-axis level with horizon correction.
Can seem intimidating at first; Fewer autofocus points than competitors; Doesn't take advantage of high-speed UHS-I flash cards; Movie feature set is very dated and file sizes huge.
Read our Pentax K-5 II Review

The Competition

Compared to Canon 6D

Canon 5D Mark III

Canon 6D

$2079
35mm

More cross-type AF points
Less shutter lag

$1499
35mm

Less expensive
Built-in Wi-Fi

Compare Canon 5D Mark III vs Canon 6D

Pentax K-5 II

Canon 6D

$699
APS-C

In-Camera Image Stabilization
More dynamic range

$1499
35mm

Larger sensor
Bigger pixels

Compare Pentax K-5 II vs Canon 6D

Compared to Canon 5D Mark IV

Canon 5D Mark III

Canon 5D Mark IV

$2079
35mm

Less expensive
Bigger pixels

$2099
35mm

Shoot 4K video
Touchscreen

Compare Canon 5D Mark III vs Canon 5D Mark IV

Pentax K-5 II

Canon 5D Mark IV

$699
APS-C

In-Camera Image Stabilization
Internal flash

$2099
35mm

Larger sensor
Shoot 4K video

Compare Pentax K-5 II vs Canon 5D Mark IV

Compared to Sony A850

Canon 5D Mark III

Sony A850

$2079
35mm

Lens selection
Higher effective ISO

$2219
35mm

In-Camera Image Stabilization

Compare Canon 5D Mark III vs Sony A850

Pentax K-5 II

Sony A850

$699
APS-C

Lens selection
Less expensive

$2219
35mm

Larger sensor
Bigger pixels

Compare Pentax K-5 II vs Sony A850

Compared to Nikon D7000

Canon 5D Mark III

Nikon D7000

$2079
35mm

Larger sensor
Bigger pixels

$699
APS-C

More dynamic range
Internal flash

Compare Canon 5D Mark III vs Nikon D7000

Pentax K-5 II

Nikon D7000

$699
APS-C

In-Camera Image Stabilization
More telephoto lens reach

$699
APS-C

Fast startup
Longer stills battery life

Compare Pentax K-5 II vs Nikon D7000

Compared to Nikon D800E

Canon 5D Mark III

Nikon D800E

$2079
35mm

Bigger pixels
More cross-type AF points

$2212
35mm

Fast startup
Higher effective ISO

Compare Canon 5D Mark III vs Nikon D800E

Pentax K-5 II

Nikon D800E

$699
APS-C

Less expensive
In-Camera Image Stabilization

$2212
35mm

Larger sensor
Fast startup

Compare Pentax K-5 II vs Nikon D800E

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