• APS-C 369.7mm2
  • 16.2 megapixels
  • ISO 100 - 12,800
  • APS-C 369.7mm2
  • 20.3 megapixels
  • ISO 100 - 12,800

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Differences

Sony A55 advantages over Samsung NX20

  • Lens selection
    Good vs Limited
    Better lens selection gives you more options
  • Less expensive
    $850 vs $1100 (MSRP)
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Fast startup
    ~0.90 vs 3.0 sec
    Faster startup lets you catch the moment
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More dots on screen
    922k vs 614k dots
    Can mean greater resolution or a brighter screen
  • Less shutter lag
    0.22 vs 0.35 sec
    Focus and take a photo quickly (wide angle)
  • Faster JPEG shooting
    9.0 fps vs 7.5 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    32 vs 11 shots
    Take more JPEG shots before waiting (burst mode)
  • Higher extended ISO
    25600 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Samsung NX20 advantages over Sony A55

  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Thinner
    39 mm vs 84 mm
    Thinner
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    20.3 vs 16.2 megapixels
    Higher resolution photos
  • Faster shutter
    1/8000 vs 1/4000 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
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • 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
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Sony A55

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Buy the Samsung NX20
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Review Excerpt

  • High quality images with lots of detail; Excellent graphical user interface is fun to use; Smart implementation of WiFi makes it relatively easy to share photos wirelessly.

  • Designed so much like a DSLR you may wonder why you shouldn't get a DSLR instead; Some performance issues, particularly slow buffer clearing and shot-to-shot speed; Initial WiFi set-up can be confusing.

  • Read our Samsung NX20 Review

The Competition

Compared to Canon T2i

Sony A55
Canon T2i
  • $734
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $692
  • APS-C
  • Lens selection
  • Fast startup

Compare Sony A55 vs Canon T2i

Samsung NX20
Canon T2i
  • $400
  • APS-C
  • Larger sensor
  • Tiltable Screen
  • $692
  • APS-C
  • Lens selection
  • Less expensive

Compare Samsung NX20 vs Canon T2i

Compared to Sony A33

Sony A55
Sony A33
  • $734
  • APS-C
  • Higher effective ISO
  • Built-in GPS
  • $540
  • APS-C

Compare Sony A55 vs Sony A33

Samsung NX20
Sony A33
  • $400
  • APS-C
  • Built-in Wi-Fi
  • Higher effective ISO
  • $540
  • APS-C
  • Lens selection
  • Less expensive

Compare Samsung NX20 vs Sony A33

Compared to Sony A35

Sony A55
Sony A35
  • $734
  • APS-C
  • Tiltable Screen
  • Built-in GPS
  • $567
  • APS-C
  • Less expensive
  • Longer stills battery life

Compare Sony A55 vs Sony A35

Samsung NX20
Sony A35
  • $400
  • APS-C
  • Tiltable Screen
  • Built-in Wi-Fi
  • $567
  • APS-C
  • Lens selection
  • Less expensive

Compare Samsung NX20 vs Sony A35

Compared to Pentax K-01

Sony A55
Pentax K-01
  • $734
  • APS-C
  • Eye-level viewfinder
  • In-camera panoramas
  • $359
  • APS-C
  • Lens selection
  • Focus peaking

Compare Sony A55 vs Pentax K-01

Samsung NX20
Pentax K-01
  • $400
  • APS-C
  • Eye-level viewfinder
  • Tiltable Screen
  • $359
  • APS-C
  • Lens selection
  • Focus peaking

Compare Samsung NX20 vs Pentax K-01

Compared to Sony NEX-F3

Sony A55
Sony NEX-F3
  • $734
  • APS-C
  • Eye-level viewfinder
  • In-Camera Image Stabilization
  • $600
  • APS-C
  • Less expensive
  • Higher effective ISO

Compare Sony A55 vs Sony NEX-F3

Samsung NX20
Sony NEX-F3
  • $400
  • APS-C
  • Eye-level viewfinder
  • Built-in Wi-Fi
  • $600
  • APS-C
  • Lens selection
  • Less expensive

Compare Samsung NX20 vs Sony NEX-F3

Compare Other Cameras?