Panasonic Lumix DC-ZS80 vs. Ricoh GR III

Comparison

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Lumix DC-ZS80 image
vs
GR III image
Panasonic Lumix DC-ZS80 Ricoh GR III
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Megapixels
20.30
24.24
Max. image resolution
5184 x 3888
6000 x 4000

Sensor

Sensor type
CMOS
CMOS
Sensor size
1/2.3" (~ 6.16 x 4.62 mm)
23.5 x 15.6 mm
Sensor resolution
5196 x 3907
6051 x 4007
Diagonal
7.70 mm
28.21 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 : 12.88
(ratio)
Panasonic Lumix DC-ZS80 Ricoh GR III
Surface area:
28.46 mm² vs 366.60 mm²
Difference: 338.14 mm² (1188%)
GR III sensor is approx. 12.88x bigger than Lumix DC-ZS80 sensor.
Pixel pitch
1.19 µm
3.88 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: 2.69 µm (226%)
Pixel pitch of GR III is approx. 226% higher than pixel pitch of Lumix DC-ZS80.
Pixel area
1.42 µm²
15.05 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: 13.63 µm² (960%)
A pixel on Ricoh GR III sensor is approx. 960% bigger than a pixel on Panasonic Lumix DC-ZS80.
Pixel density
71.15 MP/cm²
6.63 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: 64.52 µm (973%)
Panasonic Lumix DC-ZS80 has approx. 973% higher pixel density than Ricoh GR III.
To learn about the accuracy of these numbers, click here.



Specs

Panasonic Lumix DC-ZS80
Ricoh GR III
Crop factor
5.62
1.53
Total megapixels
21.10
Effective megapixels
20.30
24.24
Optical zoom
30x
1x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 80-3200 (extends to 6400)
Auto, 100-102400
RAW
Manual focus
Normal focus range
50 cm
10 cm
Macro focus range
3 cm
6 cm
Focal length (35mm equiv.)
24 - 720 mm
28 mm
Aperture priority
Yes
Yes
Max. aperture
f3.3 - f6.4
f2.8
Max. aperture (35mm equiv.)
f18.5 - f36
f4.3
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Highlight-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
4 sec
30 sec
Max. shutter speed
1/2000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Electronic
Optical (optional)
White balance presets
5
8
Screen size
3"
3"
Screen resolution
1,040,000 dots
1,036,800 dots
Video capture
Max. video resolution
3840x2160 (30p/24p)
1920x1080 (60p/30p/24p)
Storage types
SD/SDHC/SDXC
SD/SDHC/SDXC
USB
USB 2.0 (480 Mbit/sec)
USB 3.0 (5 GBit/sec)
HDMI
Wireless
GPS
Battery
Li-ion Battery Pack
DB-110 lithium-ion battery
Weight
328 g
257 g
Dimensions
112 x 68.8 x 41.6 mm
109.4 x 61.9 x 33.2 mm
Year
2019
2019




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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-ZS80 diagonal

The diagonal of Lumix DC-ZS80 sensor is not 1/2.3 or 0.43" (11 mm) as you might expect, but approximately two thirds of that value - 7.7 mm. If you want to know why, see sensor sizes.

w = 6.16 mm
h = 4.62 mm
Diagonal =  6.16² + 4.62²   = 7.70 mm

Ricoh GR III diagonal

w = 23.50 mm
h = 15.60 mm
Diagonal =  23.50² + 15.60²   = 28.21 mm


Surface area

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

Lumix DC-ZS80 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 mm²

GR III sensor area

Width = 23.50 mm
Height = 15.60 mm

Surface area = 23.50 × 15.60 = 366.60 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-ZS80 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 5196 pixels
Pixel pitch =   6.16  × 1000  = 1.19 µm
5196

GR III pixel pitch

Sensor width = 23.50 mm
Sensor resolution width = 6051 pixels
Pixel pitch =   23.50  × 1000  = 3.88 µm
6051


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-ZS80 pixel area

Pixel pitch = 1.19 µm

Pixel area = 1.19² = 1.42 µm²

GR III pixel area

Pixel pitch = 3.88 µm

Pixel area = 3.88² = 15.05 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-ZS80 pixel density

Sensor resolution width = 5196 pixels
Sensor width = 0.616 cm

Pixel density = (5196 / 0.616)² / 1000000 = 71.15 MP/cm²

GR III pixel density

Sensor resolution width = 6051 pixels
Sensor width = 2.35 cm

Pixel density = (6051 / 2.35)² / 1000000 = 6.63 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-ZS80 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 20.30
r = 6.16/4.62 = 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

GR III sensor resolution

Sensor width = 23.50 mm
Sensor height = 15.60 mm
Effective megapixels = 24.24
r = 23.50/15.60 = 1.51
X =  24.24 × 1000000  = 4007
1.51
Resolution horizontal: X × r = 4007 × 1.51 = 6051
Resolution vertical: X = 4007

Sensor resolution = 6051 x 4007


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-ZS80 crop factor

Sensor diagonal in mm = 7.70 mm
Crop factor =   43.27  = 5.62
7.70

GR III crop factor

Sensor diagonal in mm = 28.21 mm
Crop factor =   43.27  = 1.53
28.21

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-ZS80 equivalent aperture

Crop factor = 5.62
Aperture = f3.3 - f6.4

35-mm equivalent aperture = (f3.3 - f6.4) × 5.62 = f18.5 - f36

GR III equivalent aperture

Crop factor = 1.53
Aperture = f2.8

35-mm equivalent aperture = (f2.8) × 1.53 = f4.3

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