Olympus C-50 Zoom vs. Olympus PEN E-PL2

Comparison

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C-50 Zoom image
vs
PEN E-PL2 image
Olympus C-50 Zoom Olympus PEN E-PL2
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Megapixels
4.90
12.30
Max. image resolution
2560 x 1920
4032 x 3024

Sensor

Sensor type
CCD
CMOS
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
Four Thirds (17.3 x 13 mm)
Sensor resolution
2552 x 1919
4045 x 3041
Diagonal
8.89 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 : 5.93
(ratio)
Olympus C-50 Zoom Olympus PEN E-PL2
Surface area:
37.90 mm² vs 224.90 mm²
Difference: 187 mm² (493%)
PEN E-PL2 sensor is approx. 5.93x bigger than C-50 Zoom sensor.
Note: You are comparing sensors of very different generations. There is a gap of 9 years between Olympus C-50 Zoom (2002) and Olympus PEN E-PL2 (2011). Nine years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
2.79 µm
4.28 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: 1.49 µm (53%)
Pixel pitch of PEN E-PL2 is approx. 53% higher than pixel pitch of C-50 Zoom.
Pixel area
7.78 µm²
18.32 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: 10.54 µm² (135%)
A pixel on Olympus PEN E-PL2 sensor is approx. 135% bigger than a pixel on Olympus C-50 Zoom.
Pixel density
12.88 MP/cm²
5.47 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: 7.41 µm (135%)
Olympus C-50 Zoom has approx. 135% higher pixel density than Olympus PEN E-PL2.
To learn about the accuracy of these numbers, click here.



Specs

Olympus C-50 Zoom
Olympus PEN E-PL2
Crop factor
4.87
2
Total megapixels
5.20
13.10
Effective megapixels
4.90
12.30
Optical zoom
3x
Digital zoom
Yes
No
ISO sensitivity
80, 160, 320
Auto, ISO (200 - 6400), Manual ISO (100 - 6400), 1/3 or 1 EV step
RAW
Manual focus
Normal focus range
50 cm
Macro focus range
20 cm
Focal length (35mm equiv.)
38 - 114 mm
Aperture priority
Yes
Yes
Max. aperture
f2.8 - f4.8
Max. aperture (35mm equiv.)
f13.6 - f23.4
n/a
Metering
ESPi Digital, 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
8 sec
60 sec
Max. shutter speed
1/1000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Electronic (optional)
White balance presets
6
8
Screen size
1.5"
3"
Screen resolution
134,000 dots
460,000 dots
Video capture
Max. video resolution
Storage types
xD Picture card
SD/SDHC
USB
USB 1.0
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Lithium-Ion rechargeable
Lithium-Ion BLS-5 rechargeable battery
Weight
194 g
362 g
Dimensions
100 x 59 x 42 mm
114 x 72 x 42 mm
Year
2002
2011




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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-50 Zoom diagonal

The diagonal of C-50 Zoom sensor is not 1/1.8 or 0.56" (14.1 mm) as you might expect, but approximately two thirds of that value - 8.89 mm. If you want to know why, see sensor sizes.

w = 7.11 mm
h = 5.33 mm
Diagonal =  7.11² + 5.33²   = 8.89 mm

Olympus PEN E-PL2 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-50 Zoom sensor area

Width = 7.11 mm
Height = 5.33 mm

Surface area = 7.11 × 5.33 = 37.90 mm²

PEN E-PL2 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-50 Zoom pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2552 pixels
Pixel pitch =   7.11  × 1000  = 2.79 µm
2552

PEN E-PL2 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 4045 pixels
Pixel pitch =   17.30  × 1000  = 4.28 µm
4045


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-50 Zoom pixel area

Pixel pitch = 2.79 µm

Pixel area = 2.79² = 7.78 µm²

PEN E-PL2 pixel area

Pixel pitch = 4.28 µm

Pixel area = 4.28² = 18.32 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-50 Zoom pixel density

Sensor resolution width = 2552 pixels
Sensor width = 0.711 cm

Pixel density = (2552 / 0.711)² / 1000000 = 12.88 MP/cm²

PEN E-PL2 pixel density

Sensor resolution width = 4045 pixels
Sensor width = 1.73 cm

Pixel density = (4045 / 1.73)² / 1000000 = 5.47 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-50 Zoom sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 4.90
r = 7.11/5.33 = 1.33
X =  4.90 × 1000000  = 1919
1.33
Resolution horizontal: X × r = 1919 × 1.33 = 2552
Resolution vertical: X = 1919

Sensor resolution = 2552 x 1919

PEN E-PL2 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 12.30
r = 17.30/13.00 = 1.33
X =  12.30 × 1000000  = 3041
1.33
Resolution horizontal: X × r = 3041 × 1.33 = 4045
Resolution vertical: X = 3041

Sensor resolution = 4045 x 3041


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-50 Zoom crop factor

Sensor diagonal in mm = 8.89 mm
Crop factor =   43.27  = 4.87
8.89

PEN E-PL2 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-50 Zoom equivalent aperture

Crop factor = 4.87
Aperture = f2.8 - f4.8

35-mm equivalent aperture = (f2.8 - f4.8) × 4.87 = f13.6 - f23.4

PEN E-PL2 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 PEN E-PL2, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Olympus PEN E-PL2 is 2

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