Olympus PEN E-PL8 vs. Canon PowerShot SD400
Comparison
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Megapixels
16.10
5.00
Max. image resolution
4608 x 3456
2592 x 1944
Sensor
Sensor type
CMOS
CCD
Sensor size
Four Thirds (17.3 x 13 mm)
1/2.5" (~ 5.75 x 4.32 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 »
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 »
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| 9.05 | : | 1 |
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| Olympus PEN E-PL8 | Canon PowerShot SD400 | |
Surface area:
| 224.90 mm² | vs | 24.84 mm² |
Difference: 200.06 mm² (805%)
PEN E-PL8 sensor is approx. 9.05x bigger than SD400 sensor.
Note: You are comparing sensors of vastly different generations.
There is a gap of 11 years between Olympus PEN E-PL8 (2016) and
Canon SD400 (2005).
Eleven years is a huge amount of time,
technology wise, resulting in newer sensor being much more
efficient than the older one.
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.
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.
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.
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: 9.02 µm² (181%)
A pixel on Olympus PEN E-PL8 sensor is approx. 181% bigger than a pixel on Canon SD400.
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.
Higher pixel density means smaller pixels and lower pixel density means larger pixels.
To learn about the accuracy of these numbers,
click here.
Specs
Olympus PEN E-PL8
Canon SD400
Total megapixels
17.20
5.20
Effective megapixels
16.10
5.00
Optical zoom
3x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 200 - 25600 (extends to 100)
Auto, 50, 100, 200, 400
RAW
Manual focus
Normal focus range
50 cm
Macro focus range
3 cm
Focal length (35mm equiv.)
35 - 105 mm
Aperture priority
Yes
No
Max. aperture
f2.8 - f4.9
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±5 EV (in 1/3 EV, 1/2 EV, 1 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
Yes
No
Min. shutter speed
60 sec
15 sec
Max. shutter speed
1/4000 sec
1/1500 sec
Built-in flash
External flash
Viewfinder
Electronic (optional)
Optical (tunnel)
White balance presets
7
5
Screen size
3"
2"
Screen resolution
1,036,800 dots
118,000 dots
Video capture
Max. video resolution
1920x1080 (30p)
Storage types
SD/SDHC/SDXC
SD card
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
BLS-50 lithium-ion battery
Lithium-Ion NB-4L battery
Weight
374 g
150 g
Dimensions
117.1 x 68.3 x 38.4 mm
86 x 53 x 21 mm
Year
2016
2005
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
Olympus PEN E-PL8 diagonal
w = 17.30 mm
h = 13.00 mm
h = 13.00 mm
| Diagonal = √ | 17.30² + 13.00² | = 21.64 mm |
Canon SD400 diagonal
The diagonal of SD400 sensor is not 1/2.5 or 0.4" (10.2 mm) as you might expect, but approximately two thirds of
that value - 7.19 mm. If you want to know why, see
sensor sizes.
w = 5.75 mm
h = 4.32 mm
w = 5.75 mm
h = 4.32 mm
| Diagonal = √ | 5.75² + 4.32² | = 7.19 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
PEN E-PL8 sensor area
Width = 17.30 mm
Height = 13.00 mm
Surface area = 17.30 × 13.00 = 224.90 mm²
Height = 13.00 mm
Surface area = 17.30 × 13.00 = 224.90 mm²
SD400 sensor area
Width = 5.75 mm
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 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 |
PEN E-PL8 pixel pitch
Sensor width = 17.30 mm
Sensor resolution width = 4627 pixels
Sensor resolution width = 4627 pixels
| Pixel pitch = | 17.30 | × 1000 | = 3.74 µm |
| 4627 |
SD400 pixel pitch
Sensor width = 5.75 mm
Sensor resolution width = 2579 pixels
Sensor resolution width = 2579 pixels
| Pixel pitch = | 5.75 | × 1000 | = 2.23 µm |
| 2579 |
Pixel area
The area of one pixel can be calculated by simply squaring the pixel pitch:
You could also divide sensor surface area with effective megapixels:
Pixel area = pixel pitch²
You could also divide sensor surface area with effective megapixels:
| Pixel area = | sensor surface area in mm² |
| effective megapixels |
PEN E-PL8 pixel area
Pixel pitch = 3.74 µm
Pixel area = 3.74² = 13.99 µm²
Pixel area = 3.74² = 13.99 µm²
SD400 pixel area
Pixel pitch = 2.23 µm
Pixel area = 2.23² = 4.97 µm²
Pixel area = 2.23² = 4.97 µm²
Pixel density
Pixel density can be calculated with the following formula:
One could also use this 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 |
PEN E-PL8 pixel density
Sensor resolution width = 4627 pixels
Sensor width = 1.73 cm
Pixel density = (4627 / 1.73)² / 1000000 = 7.15 MP/cm²
Sensor width = 1.73 cm
Pixel density = (4627 / 1.73)² / 1000000 = 7.15 MP/cm²
SD400 pixel density
Sensor resolution width = 2579 pixels
Sensor width = 0.575 cm
Pixel density = (2579 / 0.575)² / 1000000 = 20.12 MP/cm²
Sensor width = 0.575 cm
Pixel density = (2579 / 0.575)² / 1000000 = 20.12 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:
3. To get sensor resolution we then multiply X with the corresponding ratio:
Resolution horizontal: X × r
Resolution vertical: X
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 → |
|
Resolution horizontal: X × r
Resolution vertical: X
PEN E-PL8 sensor resolution
Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 16.10
Resolution horizontal: X × r = 3479 × 1.33 = 4627
Resolution vertical: X = 3479
Sensor resolution = 4627 x 3479
Sensor height = 13.00 mm
Effective megapixels = 16.10
| r = 17.30/13.00 = 1.33 |
|
Resolution vertical: X = 3479
Sensor resolution = 4627 x 3479
SD400 sensor resolution
Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 5.00
Resolution horizontal: X × r = 1939 × 1.33 = 2579
Resolution vertical: X = 1939
Sensor resolution = 2579 x 1939
Sensor height = 4.32 mm
Effective megapixels = 5.00
| r = 5.75/4.32 = 1.33 |
|
Resolution vertical: X = 1939
Sensor resolution = 2579 x 1939
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 |
PEN E-PL8 crop factor
Sensor diagonal in mm = 21.64 mm
| Crop factor = | 43.27 | = 2 |
| 21.64 |
SD400 crop factor
Sensor diagonal in mm = 7.19 mm
| Crop factor = | 43.27 | = 6.02 |
| 7.19 |
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).
PEN E-PL8 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-PL8, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Olympus PEN E-PL8 is 2
Crop factor for Olympus PEN E-PL8 is 2
SD400 equivalent aperture
Crop factor = 6.02
Aperture = f2.8 - f4.9
35-mm equivalent aperture = (f2.8 - f4.9) × 6.02 = f16.9 - f29.5
Aperture = f2.8 - f4.9
35-mm equivalent aperture = (f2.8 - f4.9) × 6.02 = f16.9 - f29.5
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