Konica Revio C2 vs. Sigma DP2 Merrill

Comparison

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Revio C2 image
vs
DP2 Merrill image
Konica Revio C2 Sigma DP2 Merrill
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Megapixels
1.20
15.40
Max. image resolution
1280 x 1024
Note: Sigma DP2 Merrill uses Foveon X3 image sensor, which is a new type of sensor that has 3 layers of photoelements stacked together in 1 pixel location. Traditional CCD/CMOS sensors have 1 pixel for 1 color, whereas Foveon sensor captures all 3 colors (blue, green, and red) at every pixel.

Sensor

Sensor type
CMOS
Foveon
Sensor size
1/3.4" (~ 4.23 x 3.17 mm)
24 x 16 mm
Sensor resolution
1264 x 950
4806 x 3204
Diagonal
5.29 mm
28.84 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 : 28.64
(ratio)
Konica Revio C2 Sigma DP2 Merrill
Surface area:
13.41 mm² vs 384.00 mm²
Difference: 370.59 mm² (2764%)
DP2 Merrill sensor is approx. 28.64x bigger than C2 sensor.
Note: You are comparing sensors of very different generations. There is a gap of 10 years between Konica C2 (2002) and Sigma DP2 Merrill (2012). Ten years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
3.35 µm
4.99 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: 1.64 µm (49%)
Pixel pitch of DP2 Merrill is approx. 49% higher than pixel pitch of C2.
Pixel area
11.22 µm²
24.9 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: 13.68 µm² (122%)
A pixel on Sigma DP2 Merrill sensor is approx. 122% bigger than a pixel on Konica C2.
Pixel density
8.93 MP/cm²
4.01 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: 4.92 µm (123%)
Konica C2 has approx. 123% higher pixel density than Sigma DP2 Merrill.
To learn about the accuracy of these numbers, click here.



Specs

Konica C2
Sigma DP2 Merrill
Crop factor
8.18
1.5
Total megapixels
15.40
Effective megapixels
15.40
Optical zoom
No
Digital zoom
Yes
ISO sensitivity
100
RAW
Manual focus
Normal focus range
60 cm
Macro focus range
30 cm
Focal length (35mm equiv.)
37 mm
Aperture priority
No
Max. aperture
f2.8
f2.8
Max. aperture (35mm equiv.)
f22.9
f4.2
Metering
Centre weighted
Exposure compensation
±1.5 EV (in 1/2 EV steps)
Shutter priority
No
Min. shutter speed
1/15 sec
Max. shutter speed
1/6600 sec
Built-in flash
External flash
Viewfinder
Optical
None
White balance presets
Screen size
1.6"
Screen resolution
920,000 dots
Video capture
Max. video resolution
Storage types
MultiMedia, Secure Digital
USB
USB 1.1
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
2x AAA
Weight
70 g
330 g
Dimensions
86 x 56 x 14 mm
122 x 67 x 59 mm
Year
2002
2012




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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

Konica C2 diagonal

The diagonal of C2 sensor is not 1/3.4 or 0.29" (7.5 mm) as you might expect, but approximately two thirds of that value - 5.29 mm. If you want to know why, see sensor sizes.

w = 4.23 mm
h = 3.17 mm
Diagonal =  4.23² + 3.17²   = 5.29 mm

Sigma DP2 Merrill diagonal

w = 24.00 mm
h = 16.00 mm
Diagonal =  24.00² + 16.00²   = 28.84 mm


Surface area

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

C2 sensor area

Width = 4.23 mm
Height = 3.17 mm

Surface area = 4.23 × 3.17 = 13.41 mm²

DP2 Merrill sensor area

Width = 24.00 mm
Height = 16.00 mm

Surface area = 24.00 × 16.00 = 384.00 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

C2 pixel pitch

Sensor width = 4.23 mm
Sensor resolution width = 1264 pixels
Pixel pitch =   4.23  × 1000  = 3.35 µm
1264

DP2 Merrill pixel pitch

Sensor width = 24.00 mm
Sensor resolution width = 4806 pixels
Pixel pitch =   24.00  × 1000  = 4.99 µm
4806


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

C2 pixel area

Pixel pitch = 3.35 µm

Pixel area = 3.35² = 11.22 µm²

DP2 Merrill pixel area

Pixel pitch = 4.99 µm

Pixel area = 4.99² = 24.9 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

C2 pixel density

Sensor resolution width = 1264 pixels
Sensor width = 0.423 cm

Pixel density = (1264 / 0.423)² / 1000000 = 8.93 MP/cm²

DP2 Merrill pixel density

Sensor resolution width = 4806 pixels
Sensor width = 2.4 cm

Pixel density = (4806 / 2.4)² / 1000000 = 4.01 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

C2 sensor resolution

Sensor width = 4.23 mm
Sensor height = 3.17 mm
Effective megapixels = 1.20
r = 4.23/3.17 = 1.33
X =  1.20 × 1000000  = 950
1.33
Resolution horizontal: X × r = 950 × 1.33 = 1264
Resolution vertical: X = 950

Sensor resolution = 1264 x 950

DP2 Merrill sensor resolution

Sensor width = 24.00 mm
Sensor height = 16.00 mm
Effective megapixels = 15.40
r = 24.00/16.00 = 1.5
X =  15.40 × 1000000  = 3204
1.5
Resolution horizontal: X × r = 3204 × 1.5 = 4806
Resolution vertical: X = 3204

Sensor resolution = 4806 x 3204


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


C2 crop factor

Sensor diagonal in mm = 5.29 mm
Crop factor =   43.27  = 8.18
5.29

DP2 Merrill crop factor

Sensor diagonal in mm = 28.84 mm
Crop factor =   43.27  = 1.5
28.84

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).

C2 equivalent aperture

Crop factor = 8.18
Aperture = f2.8

35-mm equivalent aperture = (f2.8) × 8.18 = f22.9

DP2 Merrill equivalent aperture

Crop factor = 1.5
Aperture = f2.8

35-mm equivalent aperture = (f2.8) × 1.5 = f4.2

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