Canon PowerShot S400 DIGITAL ELPH vs. Nikon Coolpix 5700

Comparison

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PowerShot S400 DIGITAL ELPH image
vs
Coolpix 5700 image
Canon PowerShot S400 DIGITAL ELPH Nikon Coolpix 5700
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Megapixels
4.00
4.90
Max. image resolution
2272 x 1704
2560 x 1920

Sensor

Sensor type
CCD
CCD
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
2/3" (~ 8.8 x 6.6 mm)
Sensor resolution
2306 x 1734
2552 x 1919
Diagonal
8.89 mm
11.00 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 : 1.53
(ratio)
Canon PowerShot S400 DIGITAL ELPH Nikon Coolpix 5700
Surface area:
37.90 mm² vs 58.08 mm²
Difference: 20.18 mm² (53%)
5700 sensor is approx. 1.53x bigger than S400 DIGITAL ELPH sensor.
Pixel pitch
3.08 µm
3.45 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: 0.37 µm (12%)
Pixel pitch of 5700 is approx. 12% higher than pixel pitch of S400 DIGITAL ELPH.
Pixel area
9.49 µm²
11.9 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: 2.41 µm² (25%)
A pixel on Nikon 5700 sensor is approx. 25% bigger than a pixel on Canon S400 DIGITAL ELPH.
Pixel density
10.52 MP/cm²
8.41 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: 2.11 µm (25%)
Canon S400 DIGITAL ELPH has approx. 25% higher pixel density than Nikon 5700.
To learn about the accuracy of these numbers, click here.



Specs

Canon S400 DIGITAL ELPH
Nikon 5700
Crop factor
4.87
3.93
Total megapixels
4.10
5.20
Effective megapixels
4.00
4.90
Optical zoom
3x
8x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 50, 100, 200, 400
Auto, 100, 200, 400, 800
RAW
Manual focus
Normal focus range
46 cm
50 cm
Macro focus range
5 cm
3 cm
Focal length (35mm equiv.)
36 - 108 mm
35 - 280 mm
Aperture priority
No
Yes
Max. aperture
f2.8 - f4.9
f2.8 - f4.2
Max. aperture (35mm equiv.)
f13.6 - f23.9
f11 - f16.5
Metering
Multi, Center-weighted, Spot
256-segment Matrix, Centre weighted, Spot, Spot-AF
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
15 sec
Bulb+8 sec
Max. shutter speed
1/2000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Electronic
White balance presets
6
6
Screen size
1.5"
1.5"
Screen resolution
118,000 dots
110,000 dots
Video capture
Max. video resolution
Storage types
Compact Flash (Type I)
CompactFlash type I, CompactFlash type II, Microdrive
USB
USB 1.0
USB 1.0
HDMI
Wireless
GPS
Battery
Canon NB-L1H 840 mAh Lithium-Ion
AA (4) batteries (NiMH recommended)
Weight
230 g
530 g
Dimensions
87 x 57 x 28 mm
108 x 76 x 102 mm
Year
2003
2002




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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

Canon S400 DIGITAL ELPH diagonal

The diagonal of S400 DIGITAL ELPH 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

Nikon 5700 diagonal

The diagonal of 5700 sensor is not 2/3 or 0.67" (16.9 mm) as you might expect, but approximately two thirds of that value - 11 mm. If you want to know why, see sensor sizes.

w = 8.80 mm
h = 6.60 mm
Diagonal =  8.80² + 6.60²   = 11.00 mm


Surface area

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

S400 DIGITAL ELPH sensor area

Width = 7.11 mm
Height = 5.33 mm

Surface area = 7.11 × 5.33 = 37.90 mm²

5700 sensor area

Width = 8.80 mm
Height = 6.60 mm

Surface area = 8.80 × 6.60 = 58.08 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

S400 DIGITAL ELPH pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2306 pixels
Pixel pitch =   7.11  × 1000  = 3.08 µm
2306

5700 pixel pitch

Sensor width = 8.80 mm
Sensor resolution width = 2552 pixels
Pixel pitch =   8.80  × 1000  = 3.45 µm
2552


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

S400 DIGITAL ELPH pixel area

Pixel pitch = 3.08 µm

Pixel area = 3.08² = 9.49 µm²

5700 pixel area

Pixel pitch = 3.45 µm

Pixel area = 3.45² = 11.9 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

S400 DIGITAL ELPH pixel density

Sensor resolution width = 2306 pixels
Sensor width = 0.711 cm

Pixel density = (2306 / 0.711)² / 1000000 = 10.52 MP/cm²

5700 pixel density

Sensor resolution width = 2552 pixels
Sensor width = 0.88 cm

Pixel density = (2552 / 0.88)² / 1000000 = 8.41 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

S400 DIGITAL ELPH sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 4.00
r = 7.11/5.33 = 1.33
X =  4.00 × 1000000  = 1734
1.33
Resolution horizontal: X × r = 1734 × 1.33 = 2306
Resolution vertical: X = 1734

Sensor resolution = 2306 x 1734

5700 sensor resolution

Sensor width = 8.80 mm
Sensor height = 6.60 mm
Effective megapixels = 4.90
r = 8.80/6.60 = 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


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


S400 DIGITAL ELPH crop factor

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

5700 crop factor

Sensor diagonal in mm = 11.00 mm
Crop factor =   43.27  = 3.93
11.00

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).

S400 DIGITAL ELPH equivalent aperture

Crop factor = 4.87
Aperture = f2.8 - f4.9

35-mm equivalent aperture = (f2.8 - f4.9) × 4.87 = f13.6 - f23.9

5700 equivalent aperture

Crop factor = 3.93
Aperture = f2.8 - f4.2

35-mm equivalent aperture = (f2.8 - f4.2) × 3.93 = f11 - f16.5

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