Updated (March, 2012): Compare the Olympus OM-D E-M5 vs Sony SLT A57

Sony SLT-A55

Tie
Sony SLT-A55

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Reasons to buy the Sony SLT-A55

Image stabilization
Image stabilization
Sensor shift
HDR
In-camera HDR
Combines multiple exposures
3D
Takes 3D photos
View photos in 3D on 3D televisions
External mic jack
External mic jack
Record higher quality audio with a microphone
 

Reasons to buy the Olympus OM-D E-M5

Image stabilization
Image stabilization
Sensor shift
Touch screen
Touch screen
Less buttons
Weather sealed
Weather sealed
Shoot in extreme weather
Screen type
OLED Screen
Bright and vivid
 
Differences | Recommendations | Cast your vote | Similarities | Competitors | Appearance | Discussion

differences

Advantages of the Olympus E-M5

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Screen type Has an OLED screen OLED vs LCD
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OLED screens are often brighter and more vibrant than typical LCD screens
Weather sealed Weather sealed Yes vs No
Help
Sealed to shoot in the rain
Touch screen Has a touch screen Yes vs No
Help
Fewer buttons to worry about and direct interaction with camera menus
Size Smaller 122x89x43 mm vs 124x92x85 mm
Help
2.1x smaller
Thickness Significantly thinner 1.7" vs 3.3"
Help
Around 50% thinner
Battery life Longer battery life 500 shots vs 330 shots
Help
More than 50% more shots per battery charge
Light sensitivity Better maximum light sensitivity 25,600 ISO vs 12,800 ISO
Help
The E-M5's maximum light sensitivity is 1 f-stop better
Focus points More focus points 35 vs 15
Help
Set focus accurately within the frame
Weight Lighter 425 g vs 500 g
Help
Around 20% lighter
Lowest price Cheaper $799.00 vs $1,073.15
Help
The best price we've seen is $274 cheaper (around 30% less)
Longest exposure Longer exposures 60s vs 30s
Help
2x longer exposures
Olympus OM-D E-M5 Learn more about
the Olympus E-M5

Advantages of the Sony SLT-A55

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Autofocus Faster video autofocus Phase detection vs Contrast detection
Help
Shoot videos without worrying about focus
Autofocus Faster autofocus Phase detection vs Contrast detection
Help
Catch candid moments easily
Panorama Can create panoramas in-camera Yes vs No
Help
Stitches together multiple photos for a wide perspective
HDR Has in-camera HDR Yes vs No
Help
Combines multiple exposures to capture high dynamic range
Screen resolution Higher resolution screen 921k dots vs 610k dots
Help
More than 50% higher resolution screen
GPS Has a GPS Yes vs No
Help
Automatically geotags your photos when traveling
Lens availability More lenses available 123 lenses vs 40 lenses
Help
More than 3x more lenses available
Sensor size Larger sensor APS-C 23.5x15.6mm vs Four thirds 17.3x13.0mm
Help
More than 60% larger sensor
Built-in flash Built-in flash Yes vs No
Help
A built-in flash is useful for taking indoor shots where there is little light
Sensor type Has a CMOS-family sensor CMOS vs LIVEMOS
Help
CMOS-family sensors often produce better quality images
Shutter lag Less shutter lag 220 ms vs 277 ms
Help
More than 20% less delay when taking photos
Overall image quality Slightly better image quality 73.0 vs 71.0
Help
Almost the same
Startup delay Slightly less startup delay 900 ms vs 1100 ms
Help
Around 20% less delay when turning on
Viewfinder size Slightly larger viewfinder 0.72x vs 0.44x
Help
More than 2.5x larger viewfinder
Continuous shooting Shoots slightly faster 10 fps vs 9 fps
Help
More than 10% faster continuous shooting
Sony SLT-A55 Learn more about
the Sony SLT-A55
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recommendations

Which camera do we recommend? Relative to the best recent digital cameras, and ignoring price

Olympus OM-D E-M5 Olympus OM-D E-M5 51
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        53 Sony SLT-A55 Sony SLT-A55
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              similarities

              Compared to recent digital cameras

              Common Strengths Common Weaknesses
              External mic jack You can plug a microphone into both of these Help
              Record higher quality audio with a microphone
              3D Both can take 3D photos, many cameras like these don't Help
              View photos in 3D on 3D televisions
              Screen flips out Flip-out screens Help
              Great for movies
              Interchangeable lenses Both support interchangeable lenses, which is uncommon in cameras similar to these Help
              Many lenses to choose from
              True resolution Capture very high resolution images Help
              E-M5:15.9 MP
              SLT-A55:16 MP
              Movie continuous focus Focus continuously recording movies Help
              Makes it easy to get in-focus movies
              Supports RAW Supports RAW Help
              Better editing
              Sensor size Large sensors Help
              E-M5:Four thirds 17.3x13.0mm
              SLT-A55:APS-C 23.5x15.6mm
              Sensor cleaning Self cleaning sensors Help
              Avoids dust in your photos
              External flash Support external flash Help
              Better lighting
              Viewfinder Both have digital viewfinders Help
              Digital
              Lowest price Very expensive Help
              E-M5:$799.00
              SLT-A55:$1,073.15
              Weight Heavy Help
              E-M5:425 g
              SLT-A55:500 g
              Supports 24p No support for 24p Help
              Missing that film look

              dxomark

              DXOMark

              competitors

              Shared Competitors

              Advantages

              Disadvantages

              Sony Alpha A6000

              Sony Alpha A6000

              Mirrorless interchangeable-lens

              $598 body only

              $748 - $760 with 16-50mm lens

              Overall image quality Has slightly better image quality
              True resolution Takes significantly higher resolution photos
              3D Doesn't take 3D photos
              External mic jack Lacks and external mic jack
              Nikon D7000

              Nikon D7000

              Entry-level DSLR

              $1,257 body only

              $1,300 with 18-105mm lens

              Overall image quality Has slightly better image quality
              Supports 24p Records movies in 24p
              Thickness Is thicker
              Weight Is significantly heavier
              Nikon D7100

              Nikon D7100

              Entry-level DSLR

              $1,047 - $1,097 body only

              $1,347 - $1,397 with 18-140mm lens

              Overall image quality Has slightly better image quality
              Screen size Has a slightly larger screen
              Thickness Is thicker
              Weight Is significantly heavier
              Nikon D5300

              Nikon D5300

              Entry-level DSLR

              $747 body only

              $679 - $847 with 18-55mm lens

              Overall image quality Has slightly better image quality
              Screen size Has a slightly larger screen
              Thickness Is thicker
              Viewfinder coverage Significantly less viewfinder coverage
              Canon Rebel T5i

              Canon Rebel T5i

              Entry-level DSLR

              $200 - $1,148 with 18-55mm lens

              Supports 24p Records movies in 24p
              Lens availability Slightly more lenses available
              Thickness Is thicker
              Weight Is slightly heavier
              Canon EOS 7D

              Canon EOS 7D

              Pro DSLR

              $999 - $1,799 body only

              $1,299 - $1,599 with 18-135mm lens

              Supports 24p Records movies in 24p
              Startup delay Has slightly less startup delay
              Thickness Is thicker
              Weight Is much heavier

              Olympus OM-D E-M5 Competitors

              Advantages

              Disadvantages

              Olympus OM-D E-M10

              Olympus OM-D E-M10

              Mirrorless interchangeable-lens

              $649 body only

              $749 with 14-42mm lens

              Screen resolution Much higher resolution screen
              Panorama Can create panoramas in-camera
              Screen type Doesn't have an OLED screen
              Weather sealed No weather sealing
              Olympus OM-D E-M1

              Olympus OM-D E-M1

              Mirrorless interchangeable-lens

              $1,399 body only

              $1,889 - $2,200 with 12-40mm lens

              Screen resolution Much higher resolution screen
              Panorama Can create panoramas in-camera
              Screen type Doesn't have an OLED screen
              3D Doesn't take 3D photos
              Fujifilm X-T1

              Fujifilm X-T1

              Mirrorless interchangeable-lens

              $1,288 - $1,299 body only

              $1,698 - $1,699 with 18-55mm lens

              Screen resolution Significantly higher resolution screen
              Panorama Can create panoramas in-camera
              Screen type Doesn't have an OLED screen
              Image stabilization No image stabilization
              Panasonic Lumix DMC-GX7

              Panasonic Lumix DMC-GX7

              Mirrorless interchangeable-lens

              $698 - $705 body only

              $798 with 14-42mm lens

              Supports 24p Supports 24p
              Screen resolution Significantly higher resolution screen
              Screen type Doesn't have an OLED screen
              Weather sealed No weather sealing
              Olympus PEN E-PL5

              Olympus PEN E-PL5

              Mirrorless interchangeable-lens

              $470 with 14-42mm lens

              Panorama Can create panoramas in-camera
              Size Smaller
              Screen type Doesn't have an OLED screen
              Weather sealed No weather sealing

              Sony SLT-A55 Competitors

              Advantages

              Disadvantages

              Sony SLT A57

              Sony SLT A57

              Entry-level DSLR

              $861 with 18-55mm lens

              Supports 24p Supports 24p
              Battery life Longer battery life
              GPS No built-in GPS
              Size Slightly larger
              Sony SLT A58

              Sony SLT A58

              Entry-level DSLR

              $448 with 18-55mm lens

              Supports 24p Supports 24p
              Battery life Significantly longer battery life
              Screen resolution Significantly lower resolution screen
              3D Doesn't take 3D photos
              Sony SLT-A65

              Sony SLT A65

              Entry-level DSLR

              $800 with 18-55mm lens

              Supports 24p Supports 24p
              True resolution Significantly higher true resolution
              Startup delay Much more startup delay
              Size Slightly larger
              Sony SLT-A77

              Sony SLT A77

              Pro DSLR

              $1,398 body only

              $1,398 with 16-50mm lens

              Weather sealed Weather sealed
              Supports 24p Supports 24p
              Startup delay Much more startup delay
              Size Larger
              Canon Rebel T3i

              Canon Rebel T3i

              Entry-level DSLR

              $499 - $648 body only

              $200 - $570 with 18-55mm lens

              Supports 24p Supports 24p
              Lens availability More lenses available
              Autofocus Lacks video autofocus
              Image stabilization No image stabilization

              appearance

              Olympus OM-D E-M5 Sony SLT-A55
              Olympus OM-D E-M5 Sony SLT-A55
              Olympus OM-D E-M5 Sony SLT-A55

              discussion

              Olympus OM-D E-M5
              OM-D E-M5
              Olympus

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              Sony SLT-A55
              SLT-A55
              Sony

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