Canon EOS 5D Mark II vs. Olympus OM-D E-M5

Comparison

change cameras »
EOS 5D Mark II image
vs
OM-D E-M5 image
Canon EOS 5D Mark II Olympus OM-D E-M5
check price » check price »
Megapixels
21.00
16.10
Max. image resolution
5616 x 3744
4608 x 3456

Sensor

Sensor type
CMOS
CMOS
Sensor size
36 x 24 mm
Four Thirds (17.3 x 13 mm)
Sensor resolution
5613 x 3742
4627 x 3479
Diagonal
43.27 mm
21.64 mm
Sensor size comparison
Sensor size is generally a good indicator of the quality of the camera. Sensors can vary greatly in size. As a general rule, the bigger the sensor, the better the image quality.

Bigger sensors are more effective because they have more surface area to capture light. An important factor when comparing digital cameras is also camera generation. Generally, newer sensors will outperform the older.

Learn more about sensor sizes »

Actual sensor size

Note: Actual size is set to screen → change »
vs
3.84 : 1
(ratio)
Canon EOS 5D Mark II Olympus OM-D E-M5
Surface area:
864.00 mm² vs 224.90 mm²
Difference: 639.1 mm² (284%)
5D Mark II sensor is approx. 3.84x bigger than OM-D E-M5 sensor.
Note: You are comparing cameras of different generations. There is a 4 year gap between Canon 5D Mark II (2008) and Olympus OM-D E-M5 (2012). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
6.41 µm
3.74 µm
Pixel pitch tells you the distance from the center of one pixel (photosite) to the center of the next. It tells you how close the pixels are to each other.

The bigger the pixel pitch, the further apart they are and the bigger each pixel is. Bigger pixels tend to have better signal to noise ratio and greater dynamic range.
Difference: 2.67 µm (71%)
Pixel pitch of 5D Mark II is approx. 71% higher than pixel pitch of OM-D E-M5.
Pixel area
41.09 µm²
13.99 µm²
Pixel or photosite area affects how much light per pixel can be gathered. The larger it is the more light can be collected by a single pixel.

Larger pixels have the potential to collect more photons, resulting in greater dynamic range, while smaller pixels provide higher resolutions (more detail) for a given sensor size.
Relative pixel sizes:
vs
Pixel area difference: 27.1 µm² (194%)
A pixel on Canon 5D Mark II sensor is approx. 194% bigger than a pixel on Olympus OM-D E-M5.
Pixel density
2.43 MP/cm²
7.15 MP/cm²
Pixel density tells you how many million pixels fit or would fit in one square cm of the sensor.

Higher pixel density means smaller pixels and lower pixel density means larger pixels.
Difference: 4.72 µm (194%)
Olympus OM-D E-M5 has approx. 194% higher pixel density than Canon 5D Mark II.
To learn about the accuracy of these numbers, click here.



Specs

Canon 5D Mark II
Olympus OM-D E-M5
Crop factor
1
2
Total megapixels
22.00
17.20
Effective megapixels
21.00
16.10
Optical zoom
Digital zoom
No
No
ISO sensitivity
Auto, 100 - 6400 in 1/3 stops, plus 50, 12800, 25600 as option
Auto, (200 - 25600), 200, 400, 800, 1600, 3200, 6400, 12800, 25600
RAW
Manual focus
Normal focus range
Macro focus range
Focal length (35mm equiv.)
Aperture priority
Yes
Yes
Max. aperture
Max. aperture (35mm equiv.)
n/a
n/a
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/3 EV, 1/2 EV steps)
±3 EV (in 1/3 EV, 1/2 EV, 1 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
30 sec
60 sec
Max. shutter speed
1/8000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Optical (pentaprism)
Electronic
White balance presets
6
12
Screen size
3"
3"
Screen resolution
920,000 dots
610,000 dots
Video capture
Max. video resolution
Storage types
Compact Flash (Type I or II), UDMA, Microdrive
SD/SDHC/SDXC
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Lithium-Ion LP-E6 rechargeable battery
Lithium-Ion BLN-1 rechargeable battery
Weight
850 g
425 g
Dimensions
152 x 114 x 75 mm
121.0 x 89.6 x 41.9 mm
Year
2008
2012




Choose cameras to compare

vs

Diagonal

Diagonal is calculated by the use of Pythagorean theorem:
Diagonal =  w² + h²
where w = sensor width and h = sensor height

Canon 5D Mark II diagonal

w = 36.00 mm
h = 24.00 mm
Diagonal =  36.00² + 24.00²   = 43.27 mm

Olympus OM-D E-M5 diagonal

w = 17.30 mm
h = 13.00 mm
Diagonal =  17.30² + 13.00²   = 21.64 mm


Surface area

Surface area is calculated by multiplying the width and the height of a sensor.

5D Mark II sensor area

Width = 36.00 mm
Height = 24.00 mm

Surface area = 36.00 × 24.00 = 864.00 mm²

OM-D E-M5 sensor area

Width = 17.30 mm
Height = 13.00 mm

Surface area = 17.30 × 13.00 = 224.90 mm²


Pixel pitch

Pixel pitch is the distance from the center of one pixel to the center of the next measured in micrometers (µm). It can be calculated with the following formula:
Pixel pitch =   sensor width in mm  × 1000
sensor resolution width in pixels

5D Mark II pixel pitch

Sensor width = 36.00 mm
Sensor resolution width = 5613 pixels
Pixel pitch =   36.00  × 1000  = 6.41 µm
5613

OM-D E-M5 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 4627 pixels
Pixel pitch =   17.30  × 1000  = 3.74 µm
4627


Pixel area

The area of one pixel can be calculated by simply squaring the pixel pitch:
Pixel area = pixel pitch²

You could also divide sensor surface area with effective megapixels:
Pixel area =   sensor surface area in mm²
effective megapixels

5D Mark II pixel area

Pixel pitch = 6.41 µm

Pixel area = 6.41² = 41.09 µm²

OM-D E-M5 pixel area

Pixel pitch = 3.74 µm

Pixel area = 3.74² = 13.99 µm²


Pixel density

Pixel density can be calculated with the following formula:
Pixel density =  ( sensor resolution width in pixels )² / 1000000
sensor width in cm

One could also use this formula:
Pixel density =   effective megapixels × 1000000  / 10000
sensor surface area in mm²

5D Mark II pixel density

Sensor resolution width = 5613 pixels
Sensor width = 3.6 cm

Pixel density = (5613 / 3.6)² / 1000000 = 2.43 MP/cm²

OM-D E-M5 pixel density

Sensor resolution width = 4627 pixels
Sensor width = 1.73 cm

Pixel density = (4627 / 1.73)² / 1000000 = 7.15 MP/cm²


Sensor resolution

Sensor resolution is calculated from sensor size and effective megapixels. It's slightly higher than maximum (not interpolated) image resolution which is usually stated on camera specifications. Sensor resolution is used in pixel pitch, pixel area, and pixel density formula. For sake of simplicity, we're going to calculate it in 3 stages.

1. First we need to find the ratio between horizontal and vertical length by dividing the former with the latter (aspect ratio). It's usually 1.33 (4:3) or 1.5 (3:2), but not always.

2. With the ratio (r) known we can calculate the X from the formula below, where X is a vertical number of pixels:
(X × r) × X = effective megapixels × 1000000    →   
X =  effective megapixels × 1000000
r
3. To get sensor resolution we then multiply X with the corresponding ratio:

Resolution horizontal: X × r
Resolution vertical: X

5D Mark II sensor resolution

Sensor width = 36.00 mm
Sensor height = 24.00 mm
Effective megapixels = 21.00
r = 36.00/24.00 = 1.5
X =  21.00 × 1000000  = 3742
1.5
Resolution horizontal: X × r = 3742 × 1.5 = 5613
Resolution vertical: X = 3742

Sensor resolution = 5613 x 3742

OM-D E-M5 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 16.10
r = 17.30/13.00 = 1.33
X =  16.10 × 1000000  = 3479
1.33
Resolution horizontal: X × r = 3479 × 1.33 = 4627
Resolution vertical: X = 3479

Sensor resolution = 4627 x 3479


Crop factor

Crop factor or focal length multiplier is calculated by dividing the diagonal of 35 mm film (43.27 mm) with the diagonal of the sensor.
Crop factor =   43.27 mm
sensor diagonal in mm


5D Mark II crop factor

Sensor diagonal in mm = 43.27 mm
Crop factor =   43.27  = 1
43.27

OM-D E-M5 crop factor

Sensor diagonal in mm = 21.64 mm
Crop factor =   43.27  = 2
21.64

35 mm equivalent aperture

Equivalent aperture (in 135 film terms) is calculated by multiplying lens aperture with crop factor (a.k.a. focal length multiplier).

5D Mark II equivalent aperture

Aperture is a lens characteristic, so it's calculated only for fixed lens cameras. If you want to know the equivalent aperture for Canon 5D Mark II, take the aperture of the lens you're using and multiply it with crop factor.

Since crop factor for Canon 5D Mark II is 1, the equivalent aperture is aperture.

OM-D E-M5 equivalent aperture

Aperture is a lens characteristic, so it's calculated only for fixed lens cameras. If you want to know the equivalent aperture for Olympus OM-D E-M5, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Olympus OM-D E-M5 is 2

Enter your screen size (diagonal)

My screen size is  inches



Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.