Canon PowerShot G7 X Mark III vs. Sony Cyber-shot DSC-HX50

Comparison

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PowerShot G7 X Mark III image
vs
Cyber-shot DSC-HX50 image
Canon PowerShot G7 X Mark III Sony Cyber-shot DSC-HX50
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Megapixels
20.10
20.40
Max. image resolution
5472 x 3648
5184 x 3888

Sensor

Sensor type
CMOS
CMOS
Sensor size
13.2 x 8.8 mm
1/2.3" (~ 6.16 x 4.62 mm)
Sensor resolution
5492 x 3661
5208 x 3916
Diagonal
15.86 mm
7.70 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
4.08 : 1
(ratio)
Canon PowerShot G7 X Mark III Sony Cyber-shot DSC-HX50
Surface area:
116.16 mm² vs 28.46 mm²
Difference: 87.7 mm² (308%)
G7 X Mark III sensor is approx. 4.08x bigger than HX50 sensor.
Note: You are comparing sensors of very different generations. There is a gap of 6 years between Canon G7 X Mark III (2019) and Sony HX50 (2013). Six years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
2.4 µm
1.18 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: 1.22 µm (103%)
Pixel pitch of G7 X Mark III is approx. 103% higher than pixel pitch of HX50.
Pixel area
5.76 µm²
1.39 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: 4.37 µm² (314%)
A pixel on Canon G7 X Mark III sensor is approx. 314% bigger than a pixel on Sony HX50.
Pixel density
17.31 MP/cm²
71.48 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: 54.17 µm (313%)
Sony HX50 has approx. 313% higher pixel density than Canon G7 X Mark III.
To learn about the accuracy of these numbers, click here.



Specs

Canon G7 X Mark III
Sony HX50
Crop factor
2.73
5.62
Total megapixels
20.90
Effective megapixels
20.10
20.40
Optical zoom
4.2x
30x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 125-12800 (extends to 25600)
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.)
24 - 100 mm
24 - 720 mm
Aperture priority
Yes
Yes
Max. aperture
f1.8 - f2.8
f3.5 - f6.3
Max. aperture (35mm equiv.)
f4.9 - f7.6
f19.7 - f35.4
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±3 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
30 sec
30 sec
Max. shutter speed
1/2000 sec
1/1600 sec
Built-in flash
External flash
Viewfinder
None
Electronic (optional)
White balance presets
6
7
Screen size
3"
3"
Screen resolution
1,040,000 dots
921,600 dots
Video capture
Max. video resolution
3840x2160 (30p/‚Äč25p)
1920x1080 (60p/60i)
Storage types
SD/SDHC/SDXC
SD/SDHC/SDXC/Memory Stick Duo/Memory Stick Pro Duo, Memory Stick Pro-HG Duo
USB
USB 3.0 (5 GBit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
NB-13L lithium-ion battery
Lithium-Ion NP-BX1 battery
Weight
304 g
272 g
Dimensions
105.5 x 60.9 x 41.4 mm
108.1 x 64.3 x 38.3 mm
Year
2019
2013




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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 G7 X Mark III diagonal

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

Sony HX50 diagonal

The diagonal of HX50 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


Surface area

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

G7 X Mark III sensor area

Width = 13.20 mm
Height = 8.80 mm

Surface area = 13.20 × 8.80 = 116.16 mm²

HX50 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 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

G7 X Mark III pixel pitch

Sensor width = 13.20 mm
Sensor resolution width = 5492 pixels
Pixel pitch =   13.20  × 1000  = 2.4 µm
5492

HX50 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 5208 pixels
Pixel pitch =   6.16  × 1000  = 1.18 µm
5208


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

G7 X Mark III pixel area

Pixel pitch = 2.4 µm

Pixel area = 2.4² = 5.76 µm²

HX50 pixel area

Pixel pitch = 1.18 µm

Pixel area = 1.18² = 1.39 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

G7 X Mark III pixel density

Sensor resolution width = 5492 pixels
Sensor width = 1.32 cm

Pixel density = (5492 / 1.32)² / 1000000 = 17.31 MP/cm²

HX50 pixel density

Sensor resolution width = 5208 pixels
Sensor width = 0.616 cm

Pixel density = (5208 / 0.616)² / 1000000 = 71.48 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

G7 X Mark III sensor resolution

Sensor width = 13.20 mm
Sensor height = 8.80 mm
Effective megapixels = 20.10
r = 13.20/8.80 = 1.5
X =  20.10 × 1000000  = 3661
1.5
Resolution horizontal: X × r = 3661 × 1.5 = 5492
Resolution vertical: X = 3661

Sensor resolution = 5492 x 3661

HX50 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 20.40
r = 6.16/4.62 = 1.33
X =  20.40 × 1000000  = 3916
1.33
Resolution horizontal: X × r = 3916 × 1.33 = 5208
Resolution vertical: X = 3916

Sensor resolution = 5208 x 3916


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


G7 X Mark III crop factor

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

HX50 crop factor

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

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).

G7 X Mark III equivalent aperture

Crop factor = 2.73
Aperture = f1.8 - f2.8

35-mm equivalent aperture = (f1.8 - f2.8) × 2.73 = f4.9 - f7.6

HX50 equivalent aperture

Crop factor = 5.62
Aperture = f3.5 - f6.3

35-mm equivalent aperture = (f3.5 - f6.3) × 5.62 = f19.7 - f35.4

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