Sony Cyber-shot DSC-HX99 vs. Canon PowerShot G12

Comparison

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Cyber-shot DSC-HX99 image
vs
PowerShot G12 image
Sony Cyber-shot DSC-HX99 Canon PowerShot G12
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Megapixels
18.20
10.00
Max. image resolution
4896 x 3672
3648 x 2736

Sensor

Sensor type
CMOS
CCD
Sensor size
1/2.3" (~ 6.16 x 4.62 mm)
1/1.7" (~ 7.53 x 5.64 mm)
Sensor resolution
4920 x 3699
3661 x 2732
Diagonal
7.70 mm
9.41 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 : 1.49
(ratio)
Sony Cyber-shot DSC-HX99 Canon PowerShot G12
Surface area:
28.46 mm² vs 42.47 mm²
Difference: 14.01 mm² (49%)
G12 sensor is approx. 1.49x bigger than HX99 sensor.
Note: You are comparing sensors of very different generations. There is a gap of 8 years between Sony HX99 (2018) and Canon G12 (2010). Eight years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
1.25 µm
2.06 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: 0.81 µm (65%)
Pixel pitch of G12 is approx. 65% higher than pixel pitch of HX99.
Pixel area
1.56 µm²
4.24 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: 2.68 µm² (172%)
A pixel on Canon G12 sensor is approx. 172% bigger than a pixel on Sony HX99.
Pixel density
63.79 MP/cm²
23.64 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: 40.15 µm (170%)
Sony HX99 has approx. 170% higher pixel density than Canon G12.
To learn about the accuracy of these numbers, click here.



Specs

Sony HX99
Canon G12
Crop factor
5.62
4.6
Total megapixels
10.40
Effective megapixels
18.20
10.00
Optical zoom
30x
5x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 80-12800
Auto, 80 - 3200
RAW
Manual focus
Normal focus range
5 cm
35 cm
Macro focus range
1 cm
Focal length (35mm equiv.)
24 - 720 mm
28 - 140 mm
Aperture priority
Yes
Yes
Max. aperture
f3.5 - f6.4
f2.8 - f4.5
Max. aperture (35mm equiv.)
f19.7 - f36
f12.9 - f20.7
Metering
Multi, Center-weighted, Spot
Centre weighted, Evaluative, 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
15 sec
Max. shutter speed
1/2000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Electronic
Optical (tunnel)
White balance presets
8
8
Screen size
3"
2.8"
Screen resolution
921,600 dots
461,000 dots
Video capture
Max. video resolution
3840x2160 (30p/24p)
Storage types
SD/SDHC/SDXC/Memory Stick Duo
SDHC, SDXC, Secure Digital
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Rechargeable Battery Pack NP-BX1
Lithium-Ion NB-7L rechargeable battery
Weight
242 g
355 g
Dimensions
102 x 58.1 x 35.5 mm
112 x 76 x 48 mm
Year
2018
2010




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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 HX99 diagonal

The diagonal of HX99 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

Canon G12 diagonal

The diagonal of G12 sensor is not 1/1.7 or 0.59" (14.9 mm) as you might expect, but approximately two thirds of that value - 9.41 mm. 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


Surface area

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

HX99 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 mm²

G12 sensor area

Width = 7.53 mm
Height = 5.64 mm

Surface area = 7.53 × 5.64 = 42.47 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

HX99 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4920 pixels
Pixel pitch =   6.16  × 1000  = 1.25 µm
4920

G12 pixel pitch

Sensor width = 7.53 mm
Sensor resolution width = 3661 pixels
Pixel pitch =   7.53  × 1000  = 2.06 µm
3661


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

HX99 pixel area

Pixel pitch = 1.25 µm

Pixel area = 1.25² = 1.56 µm²

G12 pixel area

Pixel pitch = 2.06 µm

Pixel area = 2.06² = 4.24 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

HX99 pixel density

Sensor resolution width = 4920 pixels
Sensor width = 0.616 cm

Pixel density = (4920 / 0.616)² / 1000000 = 63.79 MP/cm²

G12 pixel density

Sensor resolution width = 3661 pixels
Sensor width = 0.753 cm

Pixel density = (3661 / 0.753)² / 1000000 = 23.64 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

HX99 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 18.20
r = 6.16/4.62 = 1.33
X =  18.20 × 1000000  = 3699
1.33
Resolution horizontal: X × r = 3699 × 1.33 = 4920
Resolution vertical: X = 3699

Sensor resolution = 4920 x 3699

G12 sensor resolution

Sensor width = 7.53 mm
Sensor height = 5.64 mm
Effective megapixels = 10.00
r = 7.53/5.64 = 1.34
X =  10.00 × 1000000  = 2732
1.34
Resolution horizontal: X × r = 2732 × 1.34 = 3661
Resolution vertical: X = 2732

Sensor resolution = 3661 x 2732


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


HX99 crop factor

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

G12 crop factor

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

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).

HX99 equivalent aperture

Crop factor = 5.62
Aperture = f3.5 - f6.4

35-mm equivalent aperture = (f3.5 - f6.4) × 5.62 = f19.7 - f36

G12 equivalent aperture

Crop factor = 4.6
Aperture = f2.8 - f4.5

35-mm equivalent aperture = (f2.8 - f4.5) × 4.6 = f12.9 - f20.7

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