Fujifilm X half vs. Ricoh GR Digital 4
Comparison
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| Fujifilm X half | Ricoh GR Digital 4 | ||||
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Megapixels
17.74
10.40
Max. image resolution
3648 x 4864
3648 x 2736
Sensor
Sensor type
CMOS
CCD
Sensor size
8.8 x 13.3 mm (vertical sensor)
1/1.7" (~ 7.53 x 5.64 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 »
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 »
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| 2.76 | : | 1 |
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| Fujifilm X half | Ricoh GR Digital 4 | |
Surface area:
| 117.04 mm² | vs | 42.47 mm² |
Difference: 74.57 mm² (176%)
X half sensor is approx. 2.76x bigger than GR 4 sensor.
Note: You are comparing sensors of vastly different generations.
There is a gap of 14 years between Fujifilm X half (2025) and
Ricoh GR 4 (2011).
Fourteen years is a huge amount of time,
technology wise, resulting in newer sensor being much more
efficient than the older one.
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.
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.
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.
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: 2.52 µm² (62%)
A pixel on Fujifilm X half sensor is approx. 62% bigger than a pixel on Ricoh GR 4.
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.
Higher pixel density means smaller pixels and lower pixel density means larger pixels.
To learn about the accuracy of these numbers,
click here.
Specs
Fujifilm X half
Ricoh GR 4
Total megapixels
Effective megapixels
17.74
Optical zoom
1x
Digital zoom
Yes
ISO sensitivity
Auto, 200-12800
Auto, 80 - 3200
RAW
Manual focus
Normal focus range
10 cm
30 cm
Macro focus range
1 cm
Focal length (35mm equiv.)
32 mm
28 mm
Aperture priority
Yes
Yes
Max. aperture
f2.8
f1.9
Metering
Multi
Centre weighted, Multi-segment, Spot
Exposure compensation
±3 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
900 sec
1 sec
Max. shutter speed
1/2000 sec
1/2000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Optical (optional)
White balance presets
7
6
Screen size
2.4"
3"
Screen resolution
920,000 dots
1,230,000 dots
Video capture
Max. video resolution
1080x1440 (24p)
Storage types
SD/SDHC/SDXC (UHS-I)
SDHC, Secure Digital
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
NP-W126S Li-ion battery
Lithium-Ion DB65 rechargeable battery
Weight
240 g
190 g
Dimensions
105.8 x 64.3 x 45.8 mm
109 x 60 x 33 mm
Year
2025
2011
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
Fujifilm X half diagonal
w = 8.80 mm
h = 13.30 mm
h = 13.30 mm
| Diagonal = √ | 8.80² + 13.30² | = 15.95 mm |
Ricoh GR 4 diagonal
The diagonal of GR 4 sensor is not 1/1.7 or 0.59" (14.9 mm) as you might expect, but approximately two thirds of
that value - 9.41 mm. If you want to know why, see
sensor sizes.
w = 7.53 mm
h = 5.64 mm
w = 7.53 mm
h = 5.64 mm
| Diagonal = √ | 7.53² + 5.64² | = 9.41 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
X half sensor area
Width = 8.80 mm
Height = 13.30 mm
Surface area = 8.80 × 13.30 = 117.04 mm²
Height = 13.30 mm
Surface area = 8.80 × 13.30 = 117.04 mm²
GR 4 sensor area
Width = 7.53 mm
Height = 5.64 mm
Surface area = 7.53 × 5.64 = 42.47 mm²
Height = 5.64 mm
Surface area = 7.53 × 5.64 = 42.47 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 |
X half pixel pitch
Sensor width = 8.80 mm
Sensor resolution width = 3421 pixels
Sensor resolution width = 3421 pixels
| Pixel pitch = | 8.80 | × 1000 | = 2.57 µm |
| 3421 |
GR 4 pixel pitch
Sensor width = 7.53 mm
Sensor resolution width = 3733 pixels
Sensor resolution width = 3733 pixels
| Pixel pitch = | 7.53 | × 1000 | = 2.02 µm |
| 3733 |
Pixel area
The area of one pixel can be calculated by simply squaring the pixel pitch:
You could also divide sensor surface area with effective megapixels:
Pixel area = pixel pitch²
You could also divide sensor surface area with effective megapixels:
| Pixel area = | sensor surface area in mm² |
| effective megapixels |
X half pixel area
Pixel pitch = 2.57 µm
Pixel area = 2.57² = 6.6 µm²
Pixel area = 2.57² = 6.6 µm²
GR 4 pixel area
Pixel pitch = 2.02 µm
Pixel area = 2.02² = 4.08 µm²
Pixel area = 2.02² = 4.08 µm²
Pixel density
Pixel density can be calculated with the following formula:
One could also use this 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 |
X half pixel density
Sensor resolution width = 3421 pixels
Sensor width = 0.88 cm
Pixel density = (3421 / 0.88)² / 1000000 = 15.11 MP/cm²
Sensor width = 0.88 cm
Pixel density = (3421 / 0.88)² / 1000000 = 15.11 MP/cm²
GR 4 pixel density
Sensor resolution width = 3733 pixels
Sensor width = 0.753 cm
Pixel density = (3733 / 0.753)² / 1000000 = 24.58 MP/cm²
Sensor width = 0.753 cm
Pixel density = (3733 / 0.753)² / 1000000 = 24.58 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:
3. To get sensor resolution we then multiply X with the corresponding ratio:
Resolution horizontal: X × r
Resolution vertical: X
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 → |
|
Resolution horizontal: X × r
Resolution vertical: X
X half sensor resolution
Sensor width = 8.80 mm
Sensor height = 13.30 mm
Effective megapixels = 17.74
Resolution horizontal: X × r = 5184 × 0.66 = 3421
Resolution vertical: X = 5184
Sensor resolution = 3421 x 5184
Sensor height = 13.30 mm
Effective megapixels = 17.74
| r = 8.80/13.30 = 0.66 |
|
Resolution vertical: X = 5184
Sensor resolution = 3421 x 5184
GR 4 sensor resolution
Sensor width = 7.53 mm
Sensor height = 5.64 mm
Effective megapixels = 10.40
Resolution horizontal: X × r = 2786 × 1.34 = 3733
Resolution vertical: X = 2786
Sensor resolution = 3733 x 2786
Sensor height = 5.64 mm
Effective megapixels = 10.40
| r = 7.53/5.64 = 1.34 |
|
Resolution vertical: X = 2786
Sensor resolution = 3733 x 2786
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 |
X half crop factor
Sensor diagonal in mm = 15.95 mm
| Crop factor = | 43.27 | = 2.71 |
| 15.95 |
GR 4 crop factor
Sensor diagonal in mm = 9.41 mm
| Crop factor = | 43.27 | = 4.6 |
| 9.41 |
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).
X half equivalent aperture
Crop factor = 2.71
Aperture = f2.8
35-mm equivalent aperture = (f2.8) × 2.71 = f7.6
Aperture = f2.8
35-mm equivalent aperture = (f2.8) × 2.71 = f7.6
GR 4 equivalent aperture
Crop factor = 4.6
Aperture = f1.9
35-mm equivalent aperture = (f1.9) × 4.6 = f8.7
Aperture = f1.9
35-mm equivalent aperture = (f1.9) × 4.6 = f8.7
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.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.