Panasonic Lumix DC-GH6 vs. Panasonic Lumix DMC-GX8

Comparison

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Lumix DC-GH6 image
vs
Lumix DMC-GX8 image
Panasonic Lumix DC-GH6 Panasonic Lumix DMC-GX8
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Megapixels
25.21
20.30
Max. image resolution
5776 x 4336
5184 x 3888

Sensor

Sensor type
CMOS
CMOS
Sensor size
Four Thirds (17.3 x 13 mm)
Four Thirds (17.3 x 13 mm)
Sensor resolution
5791 x 4354
5196 x 3907
Diagonal
21.64 mm
21.64 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
(ratio)
Panasonic Lumix DC-GH6 Panasonic Lumix DMC-GX8
Surface area:
224.90 mm² vs 224.90 mm²
Difference: 0 mm² (0%)
Lumix DC-GH6 and GX8 sensors are the same size.
Note: You are comparing sensors of very different generations. There is a gap of 7 years between Panasonic Lumix DC-GH6 (2022) and Panasonic GX8 (2015). Seven years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
2.99 µm
3.33 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: 0.34 µm (11%)
Pixel pitch of GX8 is approx. 11% higher than pixel pitch of Lumix DC-GH6.
Pixel area
8.94 µm²
11.09 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: 2.15 µm² (24%)
A pixel on Panasonic GX8 sensor is approx. 24% bigger than a pixel on Panasonic Lumix DC-GH6.
Pixel density
11.21 MP/cm²
9.02 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: 2.19 µm (24%)
Panasonic Lumix DC-GH6 has approx. 24% higher pixel density than Panasonic GX8.
To learn about the accuracy of these numbers, click here.



Specs

Panasonic Lumix DC-GH6
Panasonic GX8
Crop factor
2
2
Total megapixels
26.52
21.77
Effective megapixels
25.21
20.30
Optical zoom
 
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 100-25600 (extends to 50)
Auto, 200-25600
RAW
Manual focus
Normal focus range
Macro focus range
Focal length (35mm equiv.)
Aperture priority
Yes
Yes
Max. aperture
Max. aperture (35mm equiv.)
n/a
n/a
Metering
Multi, Center-weighted, Highlight-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±5 EV (in 1/3 EV steps)
±5 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
60 sec
60 sec
Max. shutter speed
1/32000 sec
1/16000 sec
Built-in flash
External flash
Viewfinder
Electronic
Electronic
White balance presets
6
5
Screen size
3"
3"
Screen resolution
1,840,000 dots
1,040,000 dots
Video capture
Max. video resolution
5760x4320 (30p/​25p/​24p)
3840x2160 (30p/24p)
Storage types
SD/SDHC/SDXC, CFexpress
SD/SDHC/SDXC
USB
USB 3.2 (10 GBit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
DMW-BLK22 Rechargeable Lithium-Ion battery
Li-ion Battery Pack
Weight
823 g
487 g
Dimensions
138.4 x 100.3 x 99.6 mm
133.2 x 77.9 x 63.1 mm
Year
2022
2015




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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

Panasonic Lumix DC-GH6 diagonal

w = 17.30 mm
h = 13.00 mm
Diagonal =  17.30² + 13.00²   = 21.64 mm

Panasonic GX8 diagonal

w = 17.30 mm
h = 13.00 mm
Diagonal =  17.30² + 13.00²   = 21.64 mm


Surface area

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

Lumix DC-GH6 sensor area

Width = 17.30 mm
Height = 13.00 mm

Surface area = 17.30 × 13.00 = 224.90 mm²

GX8 sensor area

Width = 17.30 mm
Height = 13.00 mm

Surface area = 17.30 × 13.00 = 224.90 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

Lumix DC-GH6 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 5791 pixels
Pixel pitch =   17.30  × 1000  = 2.99 µm
5791

GX8 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 5196 pixels
Pixel pitch =   17.30  × 1000  = 3.33 µm
5196


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

Lumix DC-GH6 pixel area

Pixel pitch = 2.99 µm

Pixel area = 2.99² = 8.94 µm²

GX8 pixel area

Pixel pitch = 3.33 µm

Pixel area = 3.33² = 11.09 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

Lumix DC-GH6 pixel density

Sensor resolution width = 5791 pixels
Sensor width = 1.73 cm

Pixel density = (5791 / 1.73)² / 1000000 = 11.21 MP/cm²

GX8 pixel density

Sensor resolution width = 5196 pixels
Sensor width = 1.73 cm

Pixel density = (5196 / 1.73)² / 1000000 = 9.02 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

Lumix DC-GH6 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 25.21
r = 17.30/13.00 = 1.33
X =  25.21 × 1000000  = 4354
1.33
Resolution horizontal: X × r = 4354 × 1.33 = 5791
Resolution vertical: X = 4354

Sensor resolution = 5791 x 4354

GX8 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 20.30
r = 17.30/13.00 = 1.33
X =  20.30 × 1000000  = 3907
1.33
Resolution horizontal: X × r = 3907 × 1.33 = 5196
Resolution vertical: X = 3907

Sensor resolution = 5196 x 3907


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


Lumix DC-GH6 crop factor

Sensor diagonal in mm = 21.64 mm
Crop factor =   43.27  = 2
21.64

GX8 crop factor

Sensor diagonal in mm = 21.64 mm
Crop factor =   43.27  = 2
21.64

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).

Lumix DC-GH6 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 Lumix DC-GH6, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Panasonic Lumix DC-GH6 is 2

GX8 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 GX8, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Panasonic GX8 is 2

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