Canon PowerShot G15 vs. Nikon 1 V2

Comparison

PowerShot G15 image
vs.
1 V2 image

 

Canon PowerShot G15 Nikon 1 V2
Megapixels
12.10 14.20
Max. resolution
4000 x 3000 4608 x 3072
Price
Amazon, B&H Photo, Adorama Amazon, B&H Photo, Adorama

Sensor

Sensor type
CMOS CMOS
Sensor size
1/1.7" (~ 7.53 x 5.64 mm) 13.2 x 8.8 mm
Sensor resolution
4027 x 3005  4616 x 3077 
Diagonal
9.41 mm  15.86 mm 
Surface area
42.47 mm²  116.16 mm² 
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 sizes:
Canon PowerShot G15
vs.
Nikon 1 V2
 
Surface area:
Canon PowerShot G15
Nikon 1 V2
Difference: 73.69 mm² (174%)
Nikon 1 V2 has approx. 174% more surface area than Canon PowerShot G15.
Pixel pitch
1.87 µm  2.86 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.
Pixel pitch
Canon PowerShot G15
Nikon 1 V2
Difference: 0.99 µm (53%)
Pixel pitch of Nikon 1 V2 is approx. 53% higher than pixel pitch of Canon PowerShot G15.
Pixel area
3.5 µm²  8.18 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:
Canon PowerShot G15
vs.
Nikon 1 V2
Pixel area difference: 4.68 µm² (134%)
A pixel on Nikon 1 V2 sensor is approx. 134% bigger than a pixel on Canon PowerShot G15.
Pixel density
28.6 MP/cm²  12.23 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.
Pixel density
Canon PowerShot G15
Nikon 1 V2
Difference: 16.37 MP/cm² (134%)
Canon PowerShot G15 has approx. 134% higher pixel density than Nikon 1 V2.
To learn about the accuracy of these numbers, click here.

Other specifications

Crop factor
4.6  2.73 
Total megapixels
13.30 15.13
Effective megapixels
12.10 14.20
Optical zoom
5x n/a
Digital zoom
Yes No
Iso
Auto, 80 - 12800 160-6400
Auto focus
Yes Yes
Manual focus
Yes Yes
Normal focus range
n/a n/a
Macro focus range
n/a n/a
Focal length (35mm equiv.)
28 - 140 mm n/a
Aperture priority
Yes Yes
Aperture
f1.8 - f2.8 n/a
Aperture (35mm equiv.)
f8.3 - f12.9  n/a 
Metering
Multi, Center-weighted, Spot Multi, Center-weighted, Spot
Exposure compensation
±3 EV (at 1/3 EV steps) ±3 EV in increments of 1/3EV
Shutter priority
Yes Yes
Min. shutter speed
15 sec 30 sec
Max. shutter speed
1/4000 sec 1/16000 sec
Flash modes
Auto, On, Off, Red-Eye, Slow Sync, Second Curtain Auto, On, Off, Red-eye, Slow sync, Rear curtain
Built-in flash
Yes Yes
External flash
Yes Yes
Viewfinder
Optical (tunnel) Electronic
White balance presets
7 6
LCD display
Yes Yes
LCD size
3" 3"
LCD resolution
922,000 921,000
Min. image resolution
640 x 480 2304 x 1536
Selftimer
Yes Yes
Storage types
SD/SDHC/SDXC SD/SDHC/SDXC card
USB
USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
Batteries
Lithium-Ion NB-10L rechargeable battery & charger Lithium-Ion EN-EL21 rechargeable battery & charger
Weight
352g 278 g
Dimensions
106.6 x 75.9 x 40.1 mm 107.8 x 81.6 x 45.9 mm
Year
2012 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

Canon PowerShot G15 diagonal

The diagonal of Canon PowerShot G15 image sensor is not 1/1.7 inch as you might expect, but approximately two thirds of that value. If you want to know why, see sensor sizes.

w = 7.53 mm
h = 5.64 mm
Diagonal =  7.53² + 5.64²   = 9.41 mm

Nikon 1 V2 diagonal

w = 13.20 mm
h = 8.80 mm
Diagonal =  13.20² + 8.80²   = 15.86 mm


Surface area

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

Canon PowerShot G15 surface area

Width = 7.53 mm
Height = 5.64 mm

Surface area = 7.53 × 5.64 = 42.47 mm²

Nikon 1 V2 surface area

Width = 13.20 mm
Height = 8.80 mm

Surface area = 13.20 × 8.80 = 116.16 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

Canon PowerShot G15 pixel pitch

Sensor width = 7.53 mm
Sensor resolution width = 4027 pixels
Pixel pitch =   7.53  × 1000  = 1.87 µm
4027

Nikon 1 V2 pixel pitch

Sensor width = 13.20 mm
Sensor resolution width = 4616 pixels
Pixel pitch =   13.20  × 1000  = 2.86 µm
4616


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

Canon PowerShot G15 pixel area

Pixel pitch = 1.87 µm

Pixel area = 1.87² = 3.5 µm²

Nikon 1 V2 pixel area

Pixel pitch = 2.86 µm

Pixel area = 2.86² = 8.18 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

You could also use this formula:
Pixel density =   effective megapixels × 1000000  / 10000
sensor surface area in mm²

Canon PowerShot G15 pixel density

Sensor resolution width = 4027 pixels
Sensor width = 0.753 cm

Pixel density = (4027 / 0.753)² / 1000000 = 28.6 MP/cm²

Nikon 1 V2 pixel density

Sensor resolution width = 4616 pixels
Sensor width = 1.32 cm

Pixel density = (4616 / 1.32)² / 1000000 = 12.23 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. 22.8 × 15.5 sensor for example has a ratio of 1.47.

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

Canon PowerShot G15 sensor resolution

Sensor width = 7.53 mm
Sensor height = 5.64 mm
Effective megapixels = 12.10
r = 7.53/5.64 = 1.34
X =  12.10 × 1000000  = 3005
1.34
Resolution horizontal: X × r = 3005 × 1.34 = 4027
Resolution vertical: X = 3005

Sensor resolution = 4027 x 3005

Nikon 1 V2 sensor resolution

Sensor width = 13.20 mm
Sensor height = 8.80 mm
Effective megapixels = 14.20
r = 13.20/8.80 = 1.5
X =  14.20 × 1000000  = 3077
1.5
Resolution horizontal: X × r = 3077 × 1.5 = 4616
Resolution vertical: X = 3077

Sensor resolution = 4616 x 3077


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


Canon PowerShot G15 crop factor

Sensor diagonal in mm = 9.41 mm
Crop factor =   43.27  = 4.6
9.41

Nikon 1 V2 crop factor

Sensor diagonal in mm = 15.86 mm
Crop factor =   43.27  = 2.73
15.86

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).

Canon PowerShot G15 equivalent aperture

Crop factor = 4.6
Aperture = f1.8 - f2.8

35-mm equivalent aperture = (f1.8 - f2.8) × 4.6 = f8.3 - f12.9

Nikon 1 V2 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 1 V2, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Nikon 1 V2 is 2.73


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