Sony Cyber-shot DSC-WX9 vs. Nikon D3200

Comparison

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Cyber-shot DSC-WX9 image
vs
D3200 image
Sony Cyber-shot DSC-WX9 Nikon D3200
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Megapixels
16.20
24.20
Max. image resolution
4608 x 3456
6016 x 4000

Sensor

Sensor type
CMOS
CMOS
Sensor size
1/2.3" (~ 6.16 x 4.62 mm)
23.2 x 15.4 mm
Sensor resolution
4642 x 3490
6045 x 4003
Diagonal
7.70 mm
27.85 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 : 12.55
(ratio)
Sony Cyber-shot DSC-WX9 Nikon D3200
Surface area:
28.46 mm² vs 357.28 mm²
Difference: 328.82 mm² (1155%)
D3200 sensor is approx. 12.55x bigger than WX9 sensor.
Pixel pitch
1.33 µm
3.84 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: 2.51 µm (189%)
Pixel pitch of D3200 is approx. 189% higher than pixel pitch of WX9.
Pixel area
1.77 µm²
14.75 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: 12.98 µm² (733%)
A pixel on Nikon D3200 sensor is approx. 733% bigger than a pixel on Sony WX9.
Pixel density
56.79 MP/cm²
6.79 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: 50 µm (736%)
Sony WX9 has approx. 736% higher pixel density than Nikon D3200.
To learn about the accuracy of these numbers, click here.



Specs

Sony WX9
Nikon D3200
Crop factor
5.62
1.55
Total megapixels
24.70
Effective megapixels
24.20
Optical zoom
5x
Digital zoom
Yes
No
ISO sensitivity
Auto, 100, 200, 400, 800, 1600, 3200
Auto, 100, 200, 400, 800, 1600, 3200, 6400 (12800 with boost)
RAW
Manual focus
Normal focus range
5 cm
Macro focus range
5 cm
Focal length (35mm equiv.)
25 - 125 mm
Aperture priority
No
Yes
Max. aperture
f2.6 - f6.3
Max. aperture (35mm equiv.)
f14.6 - f35.4
n/a
Metering
Centre weighted, Multi-segment, Spot
Multi, Center-weighted, Spot AF-area
Exposure compensation
±2 EV (in 1/3 EV steps)
±5 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
2 sec
30 sec
Max. shutter speed
1/1600 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
None
Optical (pentamirror)
White balance presets
7
12
Screen size
3"
3"
Screen resolution
921,600 dots
921,000 dots
Video capture
Max. video resolution
1920x1080 (30p/25p/24p)
Storage types
Memory Stick Duo, Memory Stick Pro Duo, SDHC, SDXC, Secure Digital
SD/SDHC/SDXC UHS-I compliant
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Lithium-Ion NP-BN1 battery
Lithium-Ion EN-EL14 rechargeable battery
Weight
123 g
505 g
Dimensions
94.6 x 56.3 x 19.8 mm
125 x 96 x 77 mm
Year
2011
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

Sony WX9 diagonal

The diagonal of WX9 sensor is not 1/2.3 or 0.43" (11 mm) as you might expect, but approximately two thirds of that value - 7.7 mm. If you want to know why, see sensor sizes.

w = 6.16 mm
h = 4.62 mm
Diagonal =  6.16² + 4.62²   = 7.70 mm

Nikon D3200 diagonal

w = 23.20 mm
h = 15.40 mm
Diagonal =  23.20² + 15.40²   = 27.85 mm


Surface area

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

WX9 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 mm²

D3200 sensor area

Width = 23.20 mm
Height = 15.40 mm

Surface area = 23.20 × 15.40 = 357.28 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

WX9 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4642 pixels
Pixel pitch =   6.16  × 1000  = 1.33 µm
4642

D3200 pixel pitch

Sensor width = 23.20 mm
Sensor resolution width = 6045 pixels
Pixel pitch =   23.20  × 1000  = 3.84 µm
6045


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

WX9 pixel area

Pixel pitch = 1.33 µm

Pixel area = 1.33² = 1.77 µm²

D3200 pixel area

Pixel pitch = 3.84 µm

Pixel area = 3.84² = 14.75 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

WX9 pixel density

Sensor resolution width = 4642 pixels
Sensor width = 0.616 cm

Pixel density = (4642 / 0.616)² / 1000000 = 56.79 MP/cm²

D3200 pixel density

Sensor resolution width = 6045 pixels
Sensor width = 2.32 cm

Pixel density = (6045 / 2.32)² / 1000000 = 6.79 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

WX9 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 16.20
r = 6.16/4.62 = 1.33
X =  16.20 × 1000000  = 3490
1.33
Resolution horizontal: X × r = 3490 × 1.33 = 4642
Resolution vertical: X = 3490

Sensor resolution = 4642 x 3490

D3200 sensor resolution

Sensor width = 23.20 mm
Sensor height = 15.40 mm
Effective megapixels = 24.20
r = 23.20/15.40 = 1.51
X =  24.20 × 1000000  = 4003
1.51
Resolution horizontal: X × r = 4003 × 1.51 = 6045
Resolution vertical: X = 4003

Sensor resolution = 6045 x 4003


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


WX9 crop factor

Sensor diagonal in mm = 7.70 mm
Crop factor =   43.27  = 5.62
7.70

D3200 crop factor

Sensor diagonal in mm = 27.85 mm
Crop factor =   43.27  = 1.55
27.85

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).

WX9 equivalent aperture

Crop factor = 5.62
Aperture = f2.6 - f6.3

35-mm equivalent aperture = (f2.6 - f6.3) × 5.62 = f14.6 - f35.4

D3200 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 Nikon D3200, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Nikon D3200 is 1.55

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