Yakumo Mega Image 47sx vs. Nikon D2xs

Comparison

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Mega Image 47sx image
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D2xs image
Yakumo Mega Image 47sx Nikon D2xs
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Megapixels
4.10
12.40
Max. image resolution
2272 x 1704
4288 x 2848

Sensor

Sensor type
CCD
CMOS
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
23.7 x 15.7 mm
Sensor resolution
2335 x 1756
4328 x 2866
Diagonal
8.89 mm
28.43 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 : 9.82
(ratio)
Yakumo Mega Image 47sx Nikon D2xs
Surface area:
37.90 mm² vs 372.09 mm²
Difference: 334.19 mm² (882%)
D2xs sensor is approx. 9.82x bigger than 47sx sensor.
Note: You are comparing cameras of different generations. There is a 2 year gap between Yakumo 47sx (2004) and Nikon D2xs (2006). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
3.04 µm
5.48 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: 2.44 µm (80%)
Pixel pitch of D2xs is approx. 80% higher than pixel pitch of 47sx.
Pixel area
9.24 µm²
30.03 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: 20.79 µm² (225%)
A pixel on Nikon D2xs sensor is approx. 225% bigger than a pixel on Yakumo 47sx.
Pixel density
10.79 MP/cm²
3.33 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: 7.46 µm (224%)
Yakumo 47sx has approx. 224% higher pixel density than Nikon D2xs.
To learn about the accuracy of these numbers, click here.



Specs

Yakumo 47sx
Nikon D2xs
Crop factor
4.87
1.52
Total megapixels
12.84
Effective megapixels
12.40
Optical zoom
Yes
Digital zoom
Yes
No
ISO sensitivity
Auto, 100, 200, 400
Auto, 100 - 800
RAW
Manual focus
Normal focus range
80 cm
Macro focus range
20 cm
Focal length (35mm equiv.)
34 - 102 mm
Aperture priority
No
Yes
Max. aperture
f2.6 - f4.5
Max. aperture (35mm equiv.)
f12.7 - f21.9
n/a
Metering
Centre weighted
3D Matrix, Centre weighted, Spot
Exposure compensation
±2 EV (in 1/2 EV steps)
±5 EV (in 1/3 EV, 1/2 EV, 1 EV steps)
Shutter priority
No
Yes
Min. shutter speed
2 sec
Bulb+30 sec
Max. shutter speed
1/2000 sec
1/8000 sec
Built-in flash
External flash
Viewfinder
Optical
Optical (pentaprism)
White balance presets
4
7
Screen size
1.5"
2.5"
Screen resolution
230,000 dots
Video capture
Max. video resolution
Storage types
CompactFlash type I
CompactFlash type I, CompactFlash type II, Microdrive
USB
USB 1.1
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
4x AA
Nikon EN-EL3e Lithium-Ion battery
Weight
252 g
1070 g
Dimensions
240 x 150 x 90 mm
157.5 x 149.5 x 85.5 mm
Year
2004
2006




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

Yakumo 47sx diagonal

The diagonal of 47sx sensor is not 1/1.8 or 0.56" (14.1 mm) as you might expect, but approximately two thirds of that value - 8.89 mm. If you want to know why, see sensor sizes.

w = 7.11 mm
h = 5.33 mm
Diagonal =  7.11² + 5.33²   = 8.89 mm

Nikon D2xs diagonal

w = 23.70 mm
h = 15.70 mm
Diagonal =  23.70² + 15.70²   = 28.43 mm


Surface area

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

47sx sensor area

Width = 7.11 mm
Height = 5.33 mm

Surface area = 7.11 × 5.33 = 37.90 mm²

D2xs sensor area

Width = 23.70 mm
Height = 15.70 mm

Surface area = 23.70 × 15.70 = 372.09 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

47sx pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2335 pixels
Pixel pitch =   7.11  × 1000  = 3.04 µm
2335

D2xs pixel pitch

Sensor width = 23.70 mm
Sensor resolution width = 4328 pixels
Pixel pitch =   23.70  × 1000  = 5.48 µm
4328


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

47sx pixel area

Pixel pitch = 3.04 µm

Pixel area = 3.04² = 9.24 µm²

D2xs pixel area

Pixel pitch = 5.48 µm

Pixel area = 5.48² = 30.03 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

47sx pixel density

Sensor resolution width = 2335 pixels
Sensor width = 0.711 cm

Pixel density = (2335 / 0.711)² / 1000000 = 10.79 MP/cm²

D2xs pixel density

Sensor resolution width = 4328 pixels
Sensor width = 2.37 cm

Pixel density = (4328 / 2.37)² / 1000000 = 3.33 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

47sx sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 4.10
r = 7.11/5.33 = 1.33
X =  4.10 × 1000000  = 1756
1.33
Resolution horizontal: X × r = 1756 × 1.33 = 2335
Resolution vertical: X = 1756

Sensor resolution = 2335 x 1756

D2xs sensor resolution

Sensor width = 23.70 mm
Sensor height = 15.70 mm
Effective megapixels = 12.40
r = 23.70/15.70 = 1.51
X =  12.40 × 1000000  = 2866
1.51
Resolution horizontal: X × r = 2866 × 1.51 = 4328
Resolution vertical: X = 2866

Sensor resolution = 4328 x 2866


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


47sx crop factor

Sensor diagonal in mm = 8.89 mm
Crop factor =   43.27  = 4.87
8.89

D2xs crop factor

Sensor diagonal in mm = 28.43 mm
Crop factor =   43.27  = 1.52
28.43

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).

47sx equivalent aperture

Crop factor = 4.87
Aperture = f2.6 - f4.5

35-mm equivalent aperture = (f2.6 - f4.5) × 4.87 = f12.7 - f21.9

D2xs 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 Nikon D2xs, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Nikon D2xs is 1.52

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