Ricoh GR II vs. Sony Alpha a5000
Comparison
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| Ricoh GR II | Sony Alpha a5000 | ||||
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Megapixels
16.20
20.10
Max. image resolution
4928 x 3264
5456 x 3632
Sensor
Sensor type
CMOS
CMOS
Sensor size
23.6 x 15.7 mm
23.5 x 15.6 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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| Ricoh GR II | Sony Alpha a5000 | |
Surface area:
| 370.52 mm² | vs | 366.60 mm² |
Difference: 3.92 mm² (1%)
GR II sensor is slightly bigger than Alpha a5000 sensor (only 1% difference).
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: 4.71 µm² (26%)
A pixel on Ricoh GR II sensor is approx. 26% bigger than a pixel on Sony Alpha a5000.
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
Ricoh GR II
Sony Alpha a5000
Total megapixels
16.90
20.40
Effective megapixels
16.20
20.10
Optical zoom
1x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 100-25600
Auto, 100 - 16000
RAW
Manual focus
Normal focus range
30 cm
Macro focus range
10 cm
Focal length (35mm equiv.)
28 mm
Aperture priority
Yes
Yes
Max. aperture
f2.8 - f16
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±4 EV (in 1/3 EV steps)
±3 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
300 sec
30 sec
Max. shutter speed
1/4000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Optical (optional)
None
White balance presets
10
9
Screen size
3"
3"
Screen resolution
1,230,000 dots
460,800 dots
Video capture
Max. video resolution
1920x1080 (30p/25p/24p)
1920x1080 (60i/24p)
Storage types
SD/SDHC/SDXC
SD/SDHC/SDXC, Memory Stick Pro Duo/Pro-HG Duo
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Rechargeable Li-Ion battery DB-65
Lithium-ion NP-FW50 battery
Weight
251 g
269 g
Dimensions
117 x 63 x 35 mm
109.6 x 62.8 x 35.7 mm
Year
2015
2014
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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 |
Ricoh GR II diagonal
w = 23.60 mm
h = 15.70 mm
h = 15.70 mm
| Diagonal = √ | 23.60² + 15.70² | = 28.35 mm |
Sony Alpha a5000 diagonal
w = 23.50 mm
h = 15.60 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.
GR II sensor area
Width = 23.60 mm
Height = 15.70 mm
Surface area = 23.60 × 15.70 = 370.52 mm²
Height = 15.70 mm
Surface area = 23.60 × 15.70 = 370.52 mm²
Alpha a5000 sensor area
Width = 23.50 mm
Height = 15.60 mm
Surface area = 23.50 × 15.60 = 366.60 mm²
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 |
GR II pixel pitch
Sensor width = 23.60 mm
Sensor resolution width = 4929 pixels
Sensor resolution width = 4929 pixels
| Pixel pitch = | 23.60 | × 1000 | = 4.79 µm |
| 4929 |
Alpha a5000 pixel pitch
Sensor width = 23.50 mm
Sensor resolution width = 5508 pixels
Sensor resolution width = 5508 pixels
| Pixel pitch = | 23.50 | × 1000 | = 4.27 µm |
| 5508 |
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 |
GR II pixel area
Pixel pitch = 4.79 µm
Pixel area = 4.79² = 22.94 µm²
Pixel area = 4.79² = 22.94 µm²
Alpha a5000 pixel area
Pixel pitch = 4.27 µm
Pixel area = 4.27² = 18.23 µm²
Pixel area = 4.27² = 18.23 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 |
GR II pixel density
Sensor resolution width = 4929 pixels
Sensor width = 2.36 cm
Pixel density = (4929 / 2.36)² / 1000000 = 4.36 MP/cm²
Sensor width = 2.36 cm
Pixel density = (4929 / 2.36)² / 1000000 = 4.36 MP/cm²
Alpha a5000 pixel density
Sensor resolution width = 5508 pixels
Sensor width = 2.35 cm
Pixel density = (5508 / 2.35)² / 1000000 = 5.49 MP/cm²
Sensor width = 2.35 cm
Pixel density = (5508 / 2.35)² / 1000000 = 5.49 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
GR II sensor resolution
Sensor width = 23.60 mm
Sensor height = 15.70 mm
Effective megapixels = 16.20
Resolution horizontal: X × r = 3286 × 1.5 = 4929
Resolution vertical: X = 3286
Sensor resolution = 4929 x 3286
Sensor height = 15.70 mm
Effective megapixels = 16.20
| r = 23.60/15.70 = 1.5 |
|
Resolution vertical: X = 3286
Sensor resolution = 4929 x 3286
Alpha a5000 sensor resolution
Sensor width = 23.50 mm
Sensor height = 15.60 mm
Effective megapixels = 20.10
Resolution horizontal: X × r = 3648 × 1.51 = 5508
Resolution vertical: X = 3648
Sensor resolution = 5508 x 3648
Sensor height = 15.60 mm
Effective megapixels = 20.10
| r = 23.50/15.60 = 1.51 |
|
Resolution vertical: X = 3648
Sensor resolution = 5508 x 3648
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 II crop factor
Sensor diagonal in mm = 28.35 mm
| Crop factor = | 43.27 | = 1.53 |
| 28.35 |
Alpha a5000 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).
GR II equivalent aperture
Crop factor = 1.53
Aperture = f2.8 - f16
35-mm equivalent aperture = (f2.8 - f16) × 1.53 = f4.3 - f24.5
Aperture = f2.8 - f16
35-mm equivalent aperture = (f2.8 - f16) × 1.53 = f4.3 - f24.5
Alpha a5000 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
Sony Alpha a5000, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Sony Alpha a5000 is 1.53
Crop factor for Sony Alpha a5000 is 1.53
More comparisons of Ricoh GR II:
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- Ricoh GR II vs. Olympus OM-D E-M10 II
- Ricoh GR II vs. Nikon D5500
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- Ricoh GR II vs. Sony Cyber-shot DSC-RX1R
- Ricoh GR II vs. Sony Alpha a5000
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