Ricoh GR III vs. Panasonic Lumix DMC-GM5

Comparison

change cameras »
GR III image
vs
Lumix DMC-GM5 image
Ricoh GR III Panasonic Lumix DMC-GM5
check price » check price »
Megapixels
24.24
16.00
Max. image resolution
6000 x 4000
4592 x 3448

Sensor

Sensor type
CMOS
CMOS
Sensor size
23.5 x 15.6 mm
Four Thirds (17.3 x 13 mm)
Sensor resolution
6051 x 4007
4612 x 3468
Diagonal
28.21 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
1.63 : 1
(ratio)
Ricoh GR III Panasonic Lumix DMC-GM5
Surface area:
366.60 mm² vs 224.90 mm²
Difference: 141.7 mm² (63%)
GR III sensor is approx. 1.63x bigger than GM5 sensor.
Note: You are comparing cameras of different generations. There is a 5 year gap between Ricoh GR III (2019) and Panasonic GM5 (2014). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
3.88 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: 0.13 µm (3%)
Pixel pitch of GR III is approx. 3% higher than pixel pitch of GM5.
Pixel area
15.05 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: 0.99 µm² (7%)
A pixel on Ricoh GR III sensor is approx. 7% bigger than a pixel on Panasonic GM5.
Pixel density
6.63 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: 0.48 µm (7%)
Panasonic GM5 has approx. 7% higher pixel density than Ricoh GR III.
To learn about the accuracy of these numbers, click here.



Specs

Ricoh GR III
Panasonic GM5
Crop factor
1.53
2
Total megapixels
16.84
Effective megapixels
24.24
16.00
Optical zoom
1x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 100-102400
Auto, 100 (Extended), 200, 400, 800, 1600, 3200, 6400, 12800, 25600
RAW
Manual focus
Normal focus range
10 cm
Macro focus range
6 cm
Focal length (35mm equiv.)
28 mm
Aperture priority
Yes
Yes
Max. aperture
f2.8
Max. aperture (35mm equiv.)
f4.3
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
30 sec
60 sec
Max. shutter speed
1/4000 sec
1/16000 sec
Built-in flash
External flash
Viewfinder
Optical (optional)
Electronic
White balance presets
8
5
Screen size
3"
3"
Screen resolution
1,036,800 dots
921,000 dots
Video capture
Max. video resolution
1920x1080 (60p/30p/24p)
1920x1080 (60p/60i/30p/24p)
Storage types
SD/SDHC/SDXC
SD/SDHC/SDXC
USB
USB 3.0 (5 GBit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
DB-110 lithium-ion battery
Li-ion Battery Pack
Weight
257 g
211 g
Dimensions
109.4 x 61.9 x 33.2 mm
98.5 x 59.5 x 36.1 mm
Year
2019
2014




Choose cameras to compare

vs

Diagonal

Diagonal is calculated by the use of Pythagorean theorem:
Diagonal =  w² + h²
where w = sensor width and h = sensor height

Ricoh GR III diagonal

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

Panasonic GM5 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.

GR III sensor area

Width = 23.50 mm
Height = 15.60 mm

Surface area = 23.50 × 15.60 = 366.60 mm²

GM5 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

GR III pixel pitch

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

GM5 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

GR III pixel area

Pixel pitch = 3.88 µm

Pixel area = 3.88² = 15.05 µm²

GM5 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

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

GM5 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

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

GM5 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


GR III crop factor

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

GM5 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).

GR III equivalent aperture

Crop factor = 1.53
Aperture = f2.8

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

GM5 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 GM5, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Panasonic GM5 is 2

Enter your screen size (diagonal)

My screen size is  inches



Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.