General

Nikon D5100 Olympus OM-D E-M5
Brand
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Nikon Olympus
Lowest price
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$378.00 $799.00
Announced
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April, 2011 February, 2012

Sensor

Type
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CMOS LIVEMOS
Size
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APS-C 23.6x15.6mm Four thirds 17.3x13.0mm
Crop factor
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1.5x 2.1x
Megapixels
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16.1 MP 15.9 MP
Light sensitivity
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6,400 ISO 25,600 ISO
Light sensitivity (boost)
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25,600 ISO Unknown
Sensor cleaning
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Yes Yes

Sensor (Advanced)

True resolution
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16.1 MP 15.9 MP
Native resolution
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4928 x 3264 4608 x 3456
Pixel size
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22.9 µm² 14.1 µm²

Screen

Type
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LCD OLED
Size
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3.0" 3.0"
Resolution
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920k dots 610k dots
Touch screen
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No Yes
Flips out
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Yes Yes
Live view
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Yes Yes

Lenses

Lens availability
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205 lenses 40 lenses
Lens mount
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Nikon F Micro Four Thirds

Form factor

Size
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127x96x78 mm 122x89x43 mm
Depth
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3.1" 1.7"
Weight
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560 g 425 g
Interchangeable lenses
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Yes Yes
Waterproof
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No No
Weather sealed
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No Yes
Built-in focus motor
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No No

Viewfinder

Type
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Pentamirror Digital
Viewfinder size
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0.51x 0.44x
Coverage
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95% 100%

Movies

Format
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1080p @ 30fps 1080p @ 60fps
Supports 24p
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Yes No
High-speed framerate
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None None
External mic jack
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Yes Yes
Autofocus
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Contrast detection Contrast detection
Continuous focus
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Yes Yes
All formats
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720p @ 30fps
720p @ 24fps
640 x 424 @ 24fps
1080p @ 24fps
1080p @ 30fps
480p @ 30fps
720p @ 30fps
720p @ 60fps
1080p @ 60fps

Features

Panorama
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No No
HDR
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Yes No
3D
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No Yes
Image stabilization
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None Sensor shift
Supports RAW
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Yes Yes
GPS
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No No

Performance

Startup delay
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500 ms 1100 ms
Shutter lag
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273 ms 277 ms
Battery life
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660 shots 500 shots
Continuous shooting
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4 fps 9 fps

Focus system

Autofocus
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Phase detection Contrast detection
Focus points
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11 35
Cross type focus points
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1 Unknown

Shutter

Max
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1/4000s 1/4000s
Min
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30s 60s

Flash

Built-in flash
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Yes No
Popup
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Yes n/a
External connection
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Yes Yes

Storage

Storage slots
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1 1
Supported formats
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SDHC
SD
SDXC
SD
SDXC
SDHC

DXO Mark Scores

Image quality
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80.0 71.0
Color depth
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23.5 bits 22.8 bits
Dynamic range
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13 EV 12.3 EV
Low light performance
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1,183 ISO 826 ISO
Nikon D5100
D5100
Nikon

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

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