Panasonic Lumix DMC-GX7 Mark II vs. Sony Cyber-shot DSC-RX100 III
Comparison
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Panasonic Lumix DMC-GX7 Mark II | Sony Cyber-shot DSC-RX100 III | ||||
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Megapixels
16.00
20.10
Max. image resolution
4592 x 3448
5472 x 3648
Sensor
Sensor type
CMOS
CMOS
Sensor size
Four Thirds (17.3 x 13 mm)
13.2 x 8.8 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 »
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 »
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1.94 | : | 1 |
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Panasonic Lumix DMC-GX7 Mark II | Sony Cyber-shot DSC-RX100 III |
Surface area:
224.90 mm² | vs | 116.16 mm² |
Difference: 108.74 mm² (94%)
GX7 Mark II sensor is approx. 1.94x bigger than RX100 III sensor.
Note: You are comparing cameras of different generations.
There is a 2 year gap between Panasonic GX7 Mark II (2016) and Sony RX100 III (2014).
All things being equal, newer sensor generations generally outperform the older.
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.
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 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.
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: 8.3 µm² (144%)
A pixel on Panasonic GX7 Mark II sensor is approx. 144% bigger than a pixel on Sony RX100 III.
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.
Higher pixel density means smaller pixels and lower pixel density means larger pixels.
To learn about the accuracy of these numbers,
click here.
Specs
Panasonic GX7 Mark II
Sony RX100 III
Total megapixels
16.84
20.90
Effective megapixels
16.00
20.10
Optical zoom
2.9x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 200-25600 (extends to 100)
Auto, 125-12800 (up to 25600)
RAW
Manual focus
Normal focus range
5 cm
Macro focus range
5 cm
Focal length (35mm equiv.)
24 - 70 mm
Aperture priority
Yes
Yes
Max. aperture
f1.8 - f2.8
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±5 EV (in 1/3 EV steps)
±3 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
60 sec
30 sec
Max. shutter speed
1/4000 sec
1/2000 sec
Built-in flash
External flash
Viewfinder
Electronic
Electronic
White balance presets
5
9
Screen size
3"
3"
Screen resolution
1,040,000 dots
1,228,800 dots
Video capture
Max. video resolution
3840x2160 (30p/24p)
1920x1080 (60p/60i/30p/24p)
Storage types
SD/SDHC/SDXC
SD/SDHC/SDXC, Memory Stick Pro Duo/Pro-HG Duo/PRO-HG HX Duo
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Lithium-ion battery
NP-BX1 lithium-ion battery
Weight
426 g
290 g
Dimensions
122 x 70.6 x 43.9 mm
101.6 x 58.1 x 41 mm
Year
2016
2014
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
Diagonal = √ | w² + h² |
Panasonic GX7 Mark II diagonal
w = 17.30 mm
h = 13.00 mm
h = 13.00 mm
Diagonal = √ | 17.30² + 13.00² | = 21.64 mm |
Sony RX100 III diagonal
w = 13.20 mm
h = 8.80 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.
GX7 Mark II sensor area
Width = 17.30 mm
Height = 13.00 mm
Surface area = 17.30 × 13.00 = 224.90 mm²
Height = 13.00 mm
Surface area = 17.30 × 13.00 = 224.90 mm²
RX100 III sensor area
Width = 13.20 mm
Height = 8.80 mm
Surface area = 13.20 × 8.80 = 116.16 mm²
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 |
GX7 Mark II pixel pitch
Sensor width = 17.30 mm
Sensor resolution width = 4612 pixels
Sensor resolution width = 4612 pixels
Pixel pitch = | 17.30 | × 1000 | = 3.75 µm |
4612 |
RX100 III pixel pitch
Sensor width = 13.20 mm
Sensor resolution width = 5492 pixels
Sensor resolution width = 5492 pixels
Pixel pitch = | 13.20 | × 1000 | = 2.4 µm |
5492 |
Pixel area
The area of one pixel can be calculated by simply squaring the pixel pitch:
You could also divide sensor surface area with effective megapixels:
Pixel area = pixel pitch²
You could also divide sensor surface area with effective megapixels:
Pixel area = | sensor surface area in mm² |
effective megapixels |
GX7 Mark II pixel area
Pixel pitch = 3.75 µm
Pixel area = 3.75² = 14.06 µm²
Pixel area = 3.75² = 14.06 µm²
RX100 III pixel area
Pixel pitch = 2.4 µm
Pixel area = 2.4² = 5.76 µm²
Pixel area = 2.4² = 5.76 µm²
Pixel density
Pixel density can be calculated with the following formula:
One could also use this 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 |
GX7 Mark II pixel density
Sensor resolution width = 4612 pixels
Sensor width = 1.73 cm
Pixel density = (4612 / 1.73)² / 1000000 = 7.11 MP/cm²
Sensor width = 1.73 cm
Pixel density = (4612 / 1.73)² / 1000000 = 7.11 MP/cm²
RX100 III pixel density
Sensor resolution width = 5492 pixels
Sensor width = 1.32 cm
Pixel density = (5492 / 1.32)² / 1000000 = 17.31 MP/cm²
Sensor width = 1.32 cm
Pixel density = (5492 / 1.32)² / 1000000 = 17.31 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:
3. To get sensor resolution we then multiply X with the corresponding ratio:
Resolution horizontal: X × r
Resolution vertical: X
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 → |
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Resolution horizontal: X × r
Resolution vertical: X
GX7 Mark II sensor resolution
Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 16.00
Resolution horizontal: X × r = 3468 × 1.33 = 4612
Resolution vertical: X = 3468
Sensor resolution = 4612 x 3468
Sensor height = 13.00 mm
Effective megapixels = 16.00
r = 17.30/13.00 = 1.33 |
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Resolution vertical: X = 3468
Sensor resolution = 4612 x 3468
RX100 III sensor resolution
Sensor width = 13.20 mm
Sensor height = 8.80 mm
Effective megapixels = 20.10
Resolution horizontal: X × r = 3661 × 1.5 = 5492
Resolution vertical: X = 3661
Sensor resolution = 5492 x 3661
Sensor height = 8.80 mm
Effective megapixels = 20.10
r = 13.20/8.80 = 1.5 |
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Resolution vertical: X = 3661
Sensor resolution = 5492 x 3661
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 |
GX7 Mark II crop factor
Sensor diagonal in mm = 21.64 mm
Crop factor = | 43.27 | = 2 |
21.64 |
RX100 III 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).
GX7 Mark II 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
Panasonic GX7 Mark II, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Panasonic GX7 Mark II is 2
Crop factor for Panasonic GX7 Mark II is 2
RX100 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
Aperture = f1.8 - f2.8
35-mm equivalent aperture = (f1.8 - f2.8) × 2.73 = f4.9 - f7.6
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If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.