Nikon D5100 vs Sony A7 II

Cameras
Compare Cameras
Nikon D5100 vs Sony A7 II

APS-C 368.2mm²
16.2 megapixels
ISO 100 - 6400

Go in depth with our full Nikon D5100 Review.
See real-world photos taken with the D5100.

35mm 855.6mm²
24.3 megapixels
ISO 100 - 25,600

Go in depth with our full Sony A7 II Review.
How does it shoot? Sony A7 II in the real world.
See real-world photos taken with the A7 II.
Compare Sony A7 II image quality against competitors.
What’s the bottom line? Read our Sony A7 II conclusion.

Succeeded by the Nikon D5200
Compare D5100 vs D5200

Succeeded by the Sony A7 III
Compare A7 II vs A7 III

Compare NIKON D5200 vs SONY A7 III

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Differences

Nikon D5100 advantages over Sony A7 II

Lens selection
Excellent vs Good
Better lens selection gives you more options
Tilt-swivel screen
Tilt-swivel vs tilt-only
Tilt and swivel the screen for maximum shooting flexibility
Fast startup
~0.50 vs 1.7 sec
Faster startup lets you catch the moment
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

660 vs 350 shots
Capture more photos
More telephoto lens reach
83 mm vs 70 mm
Capture objects farther away with the kit lens
Internal flash
Internal flash vs None
Useful in a pinch for fill flash
Bigger JPEG buffer
100 vs 52 shots
Take more JPEG shots before waiting (burst mode)

Sony A7 II advantages over Nikon D5100

Focus peaking
Peaker vs Non-peaker
Your camera will highlight what's in focus
Larger sensor
35mm vs APS-C
More sensor area. Bigger is (generally) better.
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
Bigger pixels
~ 5.97 vs 4.79 microns
Better low-light and dynamic range (all else equal)
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
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.
A7 II test data on DxO Mark D5100 test data on DxO Mark

2,449 vs 1,183 iso
Take photos in low light with less noise
On-sensor phase detect
Yes vs No
Usually improves live view and video AF performance
Thinner
59 mm vs 79 mm
Thinner
More dots on screen
1229k vs 922k dots
Can mean greater resolution or a brighter screen
More viewfinder magnification
0.71x vs 0.52x
Get a bigger view of the scene through the eye-level viewfinder
More pixels
24.3 vs 16.2 megapixels
Higher resolution photos
Shoots 60p video
Yes vs No
A faster framerate can give you more editing options
Headphone jack
Yes vs No
Monitor audio recording while you shoot video
Faster JPEG shooting
5.0 fps vs 3.9 fps
Faster JPEG shooting (burst mode)
Faster RAW shooting
5.0 fps vs 4.0 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
28 vs 13 shots
Larger buffer for RAW shots (burst mode)
Faster shutter
1/8000 vs 1/4000 sec
Shoot wide open in bright light
Higher extended ISO
51200 vs 25600 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
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

Touchscreen
Neither provide
Interact with your camera just like your smartphone
Built-in Bluetooth
Neither provide
Always-on wireless connectivity
Built-in GPS
Neither provide
Geotag your photos
Top deck display
Neither provide
Check settings with a screen on top of the camera
Dual card slots
Neither provide
Gives you more storage flexibility
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

Amazon
Adorama
Read D5100 User Reviews

Amazon
Adorama
Read A7 II User Reviews

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Body Only
Kit with 28-70mm Lens

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Review Excerpt

Side-mounted tilt / swivel LCD screen; same sensor and processing as the Nikon D7000; good speed and battery life; in-camera HDR and filter effects; Full HD video capture with aperture control; audio levels control and external microphone jack.
AF-S lens mount doesn't offer autofocus with screw-drive lenses; popup flash isn't the greatest; no built-in wireless flash control; HDR function doesn't microalign source images.
Read our Nikon D5100 Full Review

Excellent 5-axis sensor-shift image stabilization; Sensor-shift IS brings stabilization to nearly any lens; Much-improved ergonomics and top-deck control layout; 'Mark II' maintains same impressive image quality, dynamic range and high ISO performance; XAVC S 50Mbps video format; Faster start-up time; Hybrid AF performs well with good continuous AF.
(Similar to A7): Loud shutter (but electronic first-curtain helps); Battery life could be better; Low-light AF still not as good as most DSLRs; High ISO JPEGs look over-processed; Slow buffer clearing; Limited selection of native Sony FE lenses (but it's getting better).
Read our Sony A7 II Review

The Competition

Compared to Sony A55

Nikon D5100

Sony A55

$650
APS-C

Lens selection
Tilt-swivel screen

$734
APS-C

In-Camera Image Stabilization
In-camera panoramas

Compare Nikon D5100 vs Sony A55

Sony A7 II

Sony A55

$1148
35mm

Focus peaking
Larger sensor

$734
APS-C

Fast startup
Built-in GPS

Compare Sony A7 II vs Sony A55

Compared to Sony A33

Nikon D5100

Sony A33

$650
APS-C

Lens selection
Tilt-swivel screen

$540
APS-C

Less expensive
In-Camera Image Stabilization

Compare Nikon D5100 vs Sony A33

Sony A7 II

Sony A33

$1148
35mm

Focus peaking
Larger sensor

$540
APS-C

Fast startup
More telephoto lens reach

Compare Sony A7 II vs Sony A33

Compared to Sony A57

Nikon D5100

Sony A57

$650
APS-C

Lens selection
Tilt-swivel screen

$800
APS-C

Focus peaking
In-Camera Image Stabilization

Compare Nikon D5100 vs Sony A57

Sony A7 II

Sony A57

$1148
35mm

Larger sensor
Bigger pixels

$800
APS-C

Longer stills battery life
More telephoto lens reach

Compare Sony A7 II vs Sony A57

Compared to Sony A7

Nikon D5100

Sony A7

$650
APS-C

Lens selection
Tilt-swivel screen

$748
35mm

Focus peaking
Larger sensor

Compare Nikon D5100 vs Sony A7

Sony A7 II

Sony A7

$1148
35mm

In-Camera Image Stabilization

$748
35mm

Less expensive

Compare Sony A7 II vs Sony A7

Compared to Sony A7 III

Nikon D5100

Sony A7 III

$650
APS-C

Lens selection
Tilt-swivel screen

$1865
35mm

Focus peaking
Larger sensor

Compare Nikon D5100 vs Sony A7 III

Sony A7 II

Sony A7 III

$1148
35mm

Less expensive
In-camera panoramas

$1865
35mm

Shoot 4K video
Touchscreen

Compare Sony A7 II vs Sony A7 III

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