Leica C (Typ112) vs. Sony Cybershot DSC RX100

Comparison

C (Typ112) image
vs.
Cybershot DSC RX100 image

 

Leica C (Typ112) Sony Cybershot DSC RX100
Megapixels
12.10 20.20
Max. resolution
4000 x 3000 5472 x 3648
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  5505 x 3670 
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:
Leica C (Typ112)
vs.
Sony Cybershot DSC RX100
 
Surface area:
Leica C (Typ112)
Sony Cybershot DSC RX100
Difference: 73.69 mm² (174%)
Sony Cybershot DSC RX100 has approx. 174% more surface area than Leica C (Typ112).
Pixel pitch
1.87 µm  2.4 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
Leica C (Typ112)
Sony Cybershot DSC RX100
Difference: 0.53 µm (28%)
Pixel pitch of Sony Cybershot DSC RX100 is approx. 28% higher than pixel pitch of Leica C (Typ112).
Pixel area
3.5 µm²  5.76 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:
Leica C (Typ112)
vs.
Sony Cybershot DSC RX100
Pixel area difference: 2.26 µm² (65%)
A pixel on Sony Cybershot DSC RX100 sensor is approx. 65% bigger than a pixel on Leica C (Typ112).
Pixel density
28.6 MP/cm²  17.39 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
Leica C (Typ112)
Sony Cybershot DSC RX100
Difference: 11.21 MP/cm² (64%)
Leica C (Typ112) has approx. 64% higher pixel density than Sony Cybershot DSC RX100.
To learn about the accuracy of these numbers, click here.

Other specifications

Crop factor
4.6  2.73 
Total megapixels
12.80 20.90
Effective megapixels
12.10 20.20
Optical zoom
7.1x 3.6x
Digital zoom
Yes Yes
Iso
Auto, 80, 100, 200, 400, 800, 1600, 3200, 6400, (12800 with boost) Auto, 100, 200, 400, 800, 1600, 3200, 6400, 12800, 25600
Auto focus
Yes Yes
Manual focus
Yes Yes
Normal focus range
50 cm n/a
Macro focus range
3 cm 5 cm
Focal length (35mm equiv.)
28 - 200 mm 28 - 100 mm
Aperture priority
Yes Yes
Aperture
f2 - f5.9 f1.8 - f4.9
Aperture (35mm equiv.)
f9.2 - f27.1  f4.9 - f13.4 
Metering
Multi, Center-weighted, Spot Multi, Center-weighted, Spot
Exposure compensation
±2 (at 1/3 EV steps) ±3 EV (at 1/3 EV steps)
Shutter priority
Yes Yes
Min. shutter speed
60 sec 30 sec
Max. shutter speed
1/4000 sec 1/2000 sec
Flash modes
Auto, On, Off, Red-Eye, Slow Sync Auto, On, Off, Slow Sync
Built-in flash
Yes Yes
External flash
No No
Viewfinder
Electronic None
White balance presets
4 9
LCD display
Yes Yes
LCD size
3" 3"
LCD resolution
920,000 1,228,800
Min. image resolution
n/a 2592 x 1944
Selftimer
Yes Yes
Storage types
SD/SDHC/SDXC SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
USB
USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
Batteries
BP-DC14 Lithium-Ion NP-BX1 battery and charger
Weight
195 g 213g
Dimensions
103 x 63 x 28 mm 102x59x36 mm
Year
2013 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

Leica C (Typ112) diagonal

The diagonal of Leica C (Typ112) 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

Sony Cybershot DSC RX100 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.

Leica C (Typ112) surface area

Width = 7.53 mm
Height = 5.64 mm

Surface area = 7.53 × 5.64 = 42.47 mm²

Sony Cybershot DSC RX100 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

Leica C (Typ112) pixel pitch

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

Sony Cybershot DSC RX100 pixel pitch

Sensor width = 13.20 mm
Sensor resolution width = 5505 pixels
Pixel pitch =   13.20  × 1000  = 2.4 µm
5505


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

Leica C (Typ112) pixel area

Pixel pitch = 1.87 µm

Pixel area = 1.87² = 3.5 µm²

Sony Cybershot DSC RX100 pixel area

Pixel pitch = 2.4 µm

Pixel area = 2.4² = 5.76 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

Leica C (Typ112) pixel density

Sensor resolution width = 4027 pixels
Sensor width = 0.753 cm

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

Sony Cybershot DSC RX100 pixel density

Sensor resolution width = 5505 pixels
Sensor width = 1.32 cm

Pixel density = (5505 / 1.32)² / 1000000 = 17.39 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

Leica C (Typ112) 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

Sony Cybershot DSC RX100 sensor resolution

Sensor width = 13.20 mm
Sensor height = 8.80 mm
Effective megapixels = 20.20
r = 13.20/8.80 = 1.5
X =  20.20 × 1000000  = 3670
1.5
Resolution horizontal: X × r = 3670 × 1.5 = 5505
Resolution vertical: X = 3670

Sensor resolution = 5505 x 3670


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


Leica C (Typ112) crop factor

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

Sony Cybershot DSC RX100 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).

Leica C (Typ112) equivalent aperture

Crop factor = 4.6
Aperture = f2 - f5.9

35-mm equivalent aperture = (f2 - f5.9) × 4.6 = f9.2 - f27.1

Sony Cybershot DSC RX100 equivalent aperture

Crop factor = 2.73
Aperture = f1.8 - f4.9

35-mm equivalent aperture = (f1.8 - f4.9) × 2.73 = f4.9 - f13.4


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