Leica CL vs. Panasonic Lumix DMC-GX85

Comparison

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CL image
vs
Lumix DMC-GX85 image
Leica CL Panasonic Lumix DMC-GX85
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Megapixels
24.24
16.00
Max. image resolution
6016 x 4014
4592 x 3448

Sensor

Sensor type
CMOS
CMOS
Sensor size
23.6 x 15.7 mm
Four Thirds (17.3 x 13 mm)
Sensor resolution
6030 x 4020
4612 x 3468
Diagonal
28.35 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
1.65 : 1
(ratio)
Leica CL Panasonic Lumix DMC-GX85
Surface area:
370.52 mm² vs 224.90 mm²
Difference: 145.62 mm² (65%)
CL sensor is approx. 1.65x bigger than GX85 sensor.
Pixel pitch
3.91 µm
3.75 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: 0.16 µm (4%)
Pixel pitch of CL is approx. 4% higher than pixel pitch of GX85.
Pixel area
15.29 µm²
14.06 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: 1.23 µm² (9%)
A pixel on Leica CL sensor is approx. 9% bigger than a pixel on Panasonic GX85.
Pixel density
6.53 MP/cm²
7.11 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: 0.58 µm (9%)
Panasonic GX85 has approx. 9% higher pixel density than Leica CL.
To learn about the accuracy of these numbers, click here.



Specs

Leica CL
Panasonic GX85
Crop factor
1.53
2
Total megapixels
24.96
16.84
Effective megapixels
24.24
16.00
Optical zoom
Digital zoom
Yes
ISO sensitivity
Auto, 100-50000
Auto, 200-25600 (extends to 100)
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
±3 EV (in 1/3 EV steps)
±5 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
30 sec
60 sec
Max. shutter speed
1/8000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Electronic
Electronic
White balance presets
5
5
Screen size
3"
3"
Screen resolution
1,040,000 dots
1,040,000 dots
Video capture
Max. video resolution
3840x2160 (30p)
3840x2160 (30p/24p)
Storage types
SD/SDHC/SDXC
SD/SDHC/SDXC
USB
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
BP-DC12 lithium ion battery
Lithium-ion battery
Weight
403 g
426 g
Dimensions
131 x 78 x 45 mm
122 x 70.6 x 43.9 mm
Year
2017
2016




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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 CL diagonal

w = 23.60 mm
h = 15.70 mm
Diagonal =  23.60² + 15.70²   = 28.35 mm

Panasonic GX85 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.

CL sensor area

Width = 23.60 mm
Height = 15.70 mm

Surface area = 23.60 × 15.70 = 370.52 mm²

GX85 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

CL pixel pitch

Sensor width = 23.60 mm
Sensor resolution width = 6030 pixels
Pixel pitch =   23.60  × 1000  = 3.91 µm
6030

GX85 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 4612 pixels
Pixel pitch =   17.30  × 1000  = 3.75 µm
4612


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

CL pixel area

Pixel pitch = 3.91 µm

Pixel area = 3.91² = 15.29 µm²

GX85 pixel area

Pixel pitch = 3.75 µm

Pixel area = 3.75² = 14.06 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

CL pixel density

Sensor resolution width = 6030 pixels
Sensor width = 2.36 cm

Pixel density = (6030 / 2.36)² / 1000000 = 6.53 MP/cm²

GX85 pixel density

Sensor resolution width = 4612 pixels
Sensor width = 1.73 cm

Pixel density = (4612 / 1.73)² / 1000000 = 7.11 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

CL sensor resolution

Sensor width = 23.60 mm
Sensor height = 15.70 mm
Effective megapixels = 24.24
r = 23.60/15.70 = 1.5
X =  24.24 × 1000000  = 4020
1.5
Resolution horizontal: X × r = 4020 × 1.5 = 6030
Resolution vertical: X = 4020

Sensor resolution = 6030 x 4020

GX85 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 16.00
r = 17.30/13.00 = 1.33
X =  16.00 × 1000000  = 3468
1.33
Resolution horizontal: X × r = 3468 × 1.33 = 4612
Resolution vertical: X = 3468

Sensor resolution = 4612 x 3468


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


CL crop factor

Sensor diagonal in mm = 28.35 mm
Crop factor =   43.27  = 1.53
28.35

GX85 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).

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

Crop factor for Leica CL is 1.53

GX85 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 GX85, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Panasonic GX85 is 2

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