Leica M11 vs. Ricoh GR IIIx

Comparison

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M11 image
vs
GR IIIx image
Leica M11 Ricoh GR IIIx
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Megapixels
60.30
24.24
Max. image resolution
9528 x 6328
6000 x 4000

Sensor

Sensor type
CMOS
CMOS
Sensor size
36 x 24 mm
23.5 x 15.6 mm
Sensor resolution
9510 x 6340
6051 x 4007
Diagonal
43.27 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
2.36 : 1
(ratio)
Leica M11 Ricoh GR IIIx
Surface area:
864.00 mm² vs 366.60 mm²
Difference: 497.4 mm² (136%)
M11 sensor is approx. 2.36x bigger than GR IIIx sensor.
Pixel pitch
3.79 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: 0.09 µm (2%)
Pixel pitch of GR IIIx is approx. 2% higher than pixel pitch of M11.
Pixel area
14.36 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: 0.69 µm² (5%)
A pixel on Ricoh GR IIIx sensor is approx. 5% bigger than a pixel on Leica M11.
Pixel density
6.98 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: 0.35 µm (5%)
Leica M11 has approx. 5% higher pixel density than Ricoh GR IIIx.
To learn about the accuracy of these numbers, click here.



Specs

Leica M11
Ricoh GR IIIx
Crop factor
1
1.53
Total megapixels
Effective megapixels
60.30
24.24
Optical zoom
 
1x
Digital zoom
No
Yes
ISO sensitivity
Auto, 64-50000
Auto, 100-102400
RAW
Manual focus
Normal focus range
20 cm
Macro focus range
12 cm
Focal length (35mm equiv.)
40 mm
Aperture priority
Yes
Yes
Max. aperture
f2.8
Max. aperture (35mm equiv.)
n/a
f4.3
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Highlight-weighted, Spot
Exposure compensation
±3 EV (in 1/3 EV steps)
±5 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
3600 sec
30 sec
Max. shutter speed
1/4000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Optical (rangefinder)
Electronic and Optical (optional)
White balance presets
8
8
Screen size
3"
3"
Screen resolution
2,332,800 dots
1,036,800 dots
Video capture
Max. video resolution
1920x1080 (60p/​30p/​24p)
Storage types
SD/SDHC/SDXC, UHS-II
SD/SDHC/SDXC
USB
USB 3.0 (5 GBit/sec)
USB 3.0 (5 GBit/sec)
HDMI
Wireless
GPS
Battery
BC-SCL7 lithium-ion battery
DB-110 lithium-ion battery
Weight
640 g
262 g
Dimensions
139 x 38.5 x 80 mm
109.4 x 61.9 x 35.2 mm
Year
2022
2021




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vs

Diagonal

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

Leica M11 diagonal

w = 36.00 mm
h = 24.00 mm
Diagonal =  36.00² + 24.00²   = 43.27 mm

Ricoh GR IIIx 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.

M11 sensor area

Width = 36.00 mm
Height = 24.00 mm

Surface area = 36.00 × 24.00 = 864.00 mm²

GR IIIx 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

M11 pixel pitch

Sensor width = 36.00 mm
Sensor resolution width = 9510 pixels
Pixel pitch =   36.00  × 1000  = 3.79 µm
9510

GR IIIx 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

M11 pixel area

Pixel pitch = 3.79 µm

Pixel area = 3.79² = 14.36 µm²

GR IIIx 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

M11 pixel density

Sensor resolution width = 9510 pixels
Sensor width = 3.6 cm

Pixel density = (9510 / 3.6)² / 1000000 = 6.98 MP/cm²

GR IIIx 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

M11 sensor resolution

Sensor width = 36.00 mm
Sensor height = 24.00 mm
Effective megapixels = 60.30
r = 36.00/24.00 = 1.5
X =  60.30 × 1000000  = 6340
1.5
Resolution horizontal: X × r = 6340 × 1.5 = 9510
Resolution vertical: X = 6340

Sensor resolution = 9510 x 6340

GR IIIx 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


M11 crop factor

Sensor diagonal in mm = 43.27 mm
Crop factor =   43.27  = 1
43.27

GR IIIx 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).

M11 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 M11, take the aperture of the lens you're using and multiply it with crop factor.

Since crop factor for Leica M11 is 1, the equivalent aperture is aperture.

GR IIIx equivalent aperture

Crop factor = 1.53
Aperture = f2.8

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

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