Canon 5D Mark III vs Pentax K-500

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Canon 5D Mark III vs Pentax K-500

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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 372.1mm²
16.3 megapixels
ISO 100 - 51,200

Go in depth with our full Pentax K-500 Review.
See real-world photos taken with the K-500.

Succeeded by the Canon 5D Mark IV
Compare 5D Mark III vs 5D Mark IV
Compare Canon 5D Mark IV vs Pentax K-500

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Differences

Canon 5D Mark III advantages over Pentax K-500

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-500 test data on DxO Mark

2,293 vs 1,087 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 710 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
More cross-type AF points
41 vs 9
Cross-type AF points improve autofocus performance
HDMI out
HDMI out vs None
Use HDMI output to monitor or review video
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
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 30 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-500 advantages over Canon 5D Mark III

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
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-500 test data on DxO Mark 5D Mark III test data on DxO Mark

13.1 vs 11.7 evs
Retain detail in highlight and shadows
Internal flash
Internal flash vs None
Useful in a pinch for fill flash

Similarities

Common Strengths

Eye-level viewfinder
Both provide
You'll be able to frame photos even when the sun is out
Pentaprism viewfinder
Both provide
Much better viewfinder picture fidelity
Hot shoe
Both provide
Off-camera flashes open new possibilities
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
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-500 User Reviews

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Buy the Canon 5D Mark III

Body Only

Body Only
Kit with 24-105mm f/4 lens
Kit with 24-70mm Lens

All 5D Mark III Deals

Your purchases support this site

Buy the Pentax K-500

Kit with 18-55mm and 50-200mm Lenses

Kit with 18-55mm and 50-200mm Lenses
Body Only
Kit with 18-55mm Lens

All K-500 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

We haven’t finished our review of the Pentax K-500, but we have extensive sample photos and a hands-on report.
See our Pentax K-500 First Shots

The Competition

Compared to Canon 6D

Canon 5D Mark III

Canon 6D

$2079
35mm

More cross-type AF points
Less shutter lag

$1699
35mm

Less expensive
Built-in Wi-Fi

Compare Canon 5D Mark III vs Canon 6D

Pentax K-500

Canon 6D

$597
APS-C

Focus peaking
In-Camera Image Stabilization

$1699
35mm

Larger sensor
Bigger pixels

Compare Pentax K-500 vs Canon 6D

Compared to Canon 5D Mark IV

Canon 5D Mark III

Canon 5D Mark IV

$2079
35mm

Less expensive
Bigger pixels

$2249
35mm

Shoot 4K video
Touchscreen

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

Pentax K-500

Canon 5D Mark IV

$597
APS-C

Focus peaking
In-Camera Image Stabilization

$2249
35mm

Larger sensor
Shoot 4K video

Compare Pentax K-500 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-500

Sony A850

$597
APS-C

Less expensive
Lens selection

$2219
35mm

Larger sensor
Bigger pixels

Compare Pentax K-500 vs Sony A850

Compared to Sony A57

Canon 5D Mark III

Sony A57

$2079
35mm

Lens selection
Larger sensor

$800
APS-C

Focus peaking
In-Camera Image Stabilization

Compare Canon 5D Mark III vs Sony A57

Pentax K-500

Sony A57

$597
APS-C

Lens selection
Less expensive

$800
APS-C

In-camera panoramas
Tiltable Screen

Compare Pentax K-500 vs Sony A57

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-500

Nikon D800E

$597
APS-C

Less expensive
Focus peaking

$2212
35mm

Larger sensor
Higher effective ISO

Compare Pentax K-500 vs Nikon D800E

Compare Other Cameras?