Panasonic Lumix DC-GH6 vs. Olympus OM-1

Comparison

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Lumix DC-GH6 image
vs
OM-1 image
Panasonic Lumix DC-GH6 Olympus OM-1
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Megapixels
25.21
20.40
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
5208 x 3916
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 Olympus OM-1
Surface area:
224.90 mm² vs 224.90 mm²
Difference: 0 mm² (0%)
Lumix DC-GH6 and OM-1 sensors are the same size.
Pixel pitch
2.99 µm
3.32 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: 0.33 µm (11%)
Pixel pitch of OM-1 is approx. 11% higher than pixel pitch of Lumix DC-GH6.
Pixel area
8.94 µm²
11.02 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: 2.08 µm² (23%)
A pixel on Olympus OM-1 sensor is approx. 23% bigger than a pixel on Panasonic Lumix DC-GH6.
Pixel density
11.21 MP/cm²
9.06 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: 2.15 µm (24%)
Panasonic Lumix DC-GH6 has approx. 24% higher pixel density than Olympus OM-1.
To learn about the accuracy of these numbers, click here.



Specs

Panasonic Lumix DC-GH6
Olympus OM-1
Crop factor
2
2
Total megapixels
26.52
22.90
Effective megapixels
25.21
20.40
Optical zoom
 
 
Digital zoom
Yes
Yes
ISO sensitivity
Auto, (100-25600)
Auto, 80-25600 (expandable to 102400)
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, 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
1/32000 sec
Built-in flash
External flash
Viewfinder
Electronic
Electronic
White balance presets
6
6
Screen size
3"
3"
Screen resolution
1,840,000 dots
1,620,000 dots
Video capture
Max. video resolution
5760x4320 (30p/​25p/​24p)
4096x2160 (60p/​50p/​30p/​25p/​24p)
Storage types
SD/SDHC/SDXC, CFexpress
SD/SDHC/SDXC, UHS-I/II
USB
USB 3.0 (5 GBit/sec)
USB 3.0 (5 GBit/sec)
HDMI
Wireless
GPS
Battery
Li-ion Battery Pack
BLX-1 Lithium-ion battery
Weight
823 g
599 g
Dimensions
138.4 x 100.3 x 99.6 mm
134.8 x 91.6 x 72.7 mm
Year
2022
2022




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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

Olympus OM-1 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

OM-1 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

OM-1 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 5208 pixels
Pixel pitch =   17.30  × 1000  = 3.32 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

Lumix DC-GH6 pixel area

Pixel pitch = 2.99 µm

Pixel area = 2.99² = 8.94 µm²

OM-1 pixel area

Pixel pitch = 3.32 µm

Pixel area = 3.32² = 11.02 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

OM-1 pixel density

Sensor resolution width = 5208 pixels
Sensor width = 1.73 cm

Pixel density = (5208 / 1.73)² / 1000000 = 9.06 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

OM-1 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 20.40
r = 17.30/13.00 = 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


Lumix DC-GH6 crop factor

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

OM-1 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

OM-1 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 Olympus OM-1, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Olympus OM-1 is 2

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