Olympus C-2100 UZ vs. Olympus OM-D E-M5

Comparison

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C-2100 UZ image
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OM-D E-M5 image
Olympus C-2100 UZ Olympus OM-D E-M5
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Megapixels
1.90
16.10
Max. image resolution
1600 x 1200
4608 x 3456

Sensor

Sensor type
CCD
CMOS
Sensor size
1/2" (~ 6.4 x 4.8 mm)
Four Thirds (17.3 x 13 mm)
Sensor resolution
1589 x 1195
4627 x 3479
Diagonal
8.00 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
1 : 7.32
(ratio)
Olympus C-2100 UZ Olympus OM-D E-M5
Surface area:
30.72 mm² vs 224.90 mm²
Difference: 194.18 mm² (632%)
OM-D E-M5 sensor is approx. 7.32x bigger than C-2100 UZ sensor.
Note: You are comparing sensors of vastly different generations. There is a gap of 12 years between Olympus C-2100 UZ (2000) and Olympus OM-D E-M5 (2012). Twelve years is a huge amount of time, technology wise, resulting in newer sensor being much more efficient than the older one.
Pixel pitch
4.03 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: 0.29 µm (8%)
Pixel pitch of C-2100 UZ is approx. 8% higher than pixel pitch of OM-D E-M5.
Pixel area
16.24 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: 2.25 µm² (16%)
A pixel on Olympus C-2100 UZ sensor is approx. 16% bigger than a pixel on Olympus OM-D E-M5.
Pixel density
6.16 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: 0.99 µm (16%)
Olympus OM-D E-M5 has approx. 16% higher pixel density than Olympus C-2100 UZ.
To learn about the accuracy of these numbers, click here.



Specs

Olympus C-2100 UZ
Olympus OM-D E-M5
Crop factor
5.41
2
Total megapixels
2.10
17.20
Effective megapixels
1.90
16.10
Optical zoom
10x
Digital zoom
Yes
No
ISO sensitivity
Auto, 100, 200, 400
Auto, (200 - 25600), 200, 400, 800, 1600, 3200, 6400, 12800, 25600
RAW
Manual focus
Normal focus range
60 cm
Macro focus range
10 cm
Focal length (35mm equiv.)
38 - 380 mm
Aperture priority
Yes
Yes
Max. aperture
f2.8 - f3.5
Max. aperture (35mm equiv.)
f15.1 - f18.9
n/a
Metering
Centre weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±3 EV (in 1/3 EV, 1/2 EV, 1 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
16 sec
60 sec
Max. shutter speed
1/800 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Electronic
Electronic
White balance presets
5
12
Screen size
1.8"
3"
Screen resolution
114,000 dots
610,000 dots
Video capture
Max. video resolution
Storage types
SmartMedia
SD/SDHC/SDXC
USB
USB 1.0
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
AA (4) batteries (NiMH recommended)
Lithium-Ion BLN-1 rechargeable battery
Weight
635 g
425 g
Dimensions
113 x 78 x 141 mm
121.0 x 89.6 x 41.9 mm
Year
2000
2012




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Diagonal

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

Olympus C-2100 UZ diagonal

The diagonal of C-2100 UZ sensor is not 1/2 or 0.5" (12.7 mm) as you might expect, but approximately two thirds of that value - 8 mm. If you want to know why, see sensor sizes.

w = 6.40 mm
h = 4.80 mm
Diagonal =  6.40² + 4.80²   = 8.00 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.

C-2100 UZ sensor area

Width = 6.40 mm
Height = 4.80 mm

Surface area = 6.40 × 4.80 = 30.72 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

C-2100 UZ pixel pitch

Sensor width = 6.40 mm
Sensor resolution width = 1589 pixels
Pixel pitch =   6.40  × 1000  = 4.03 µm
1589

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

C-2100 UZ pixel area

Pixel pitch = 4.03 µm

Pixel area = 4.03² = 16.24 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

C-2100 UZ pixel density

Sensor resolution width = 1589 pixels
Sensor width = 0.64 cm

Pixel density = (1589 / 0.64)² / 1000000 = 6.16 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

C-2100 UZ sensor resolution

Sensor width = 6.40 mm
Sensor height = 4.80 mm
Effective megapixels = 1.90
r = 6.40/4.80 = 1.33
X =  1.90 × 1000000  = 1195
1.33
Resolution horizontal: X × r = 1195 × 1.33 = 1589
Resolution vertical: X = 1195

Sensor resolution = 1589 x 1195

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


C-2100 UZ crop factor

Sensor diagonal in mm = 8.00 mm
Crop factor =   43.27  = 5.41
8.00

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).

C-2100 UZ equivalent aperture

Crop factor = 5.41
Aperture = f2.8 - f3.5

35-mm equivalent aperture = (f2.8 - f3.5) × 5.41 = f15.1 - f18.9

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

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