Yakumo Mega Image 47sx vs. Fujifilm FinePix 2800 Zoom

Comparison

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Mega Image 47sx image
vs
FinePix 2800 Zoom image
Yakumo Mega Image 47sx Fujifilm FinePix 2800 Zoom
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Megapixels
4.10
1.90
Max. image resolution
2272 x 1704
1600 x 1200

Sensor

Sensor type
CCD
CCD
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
1/2.7" (~ 5.33 x 4 mm)
Sensor resolution
2335 x 1756
1589 x 1195
Diagonal
8.89 mm
6.66 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
1.78 : 1
(ratio)
Yakumo Mega Image 47sx Fujifilm FinePix 2800 Zoom
Surface area:
37.90 mm² vs 21.32 mm²
Difference: 16.58 mm² (78%)
47sx sensor is approx. 1.78x bigger than 2800 Zoom sensor.
Note: You are comparing cameras of different generations. There is a 3 year gap between Yakumo 47sx (2004) and Fujifilm 2800 Zoom (2001). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
3.04 µm
3.35 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: 0.31 µm (10%)
Pixel pitch of 2800 Zoom is approx. 10% higher than pixel pitch of 47sx.
Pixel area
9.24 µm²
11.22 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: 1.98 µm² (21%)
A pixel on Fujifilm 2800 Zoom sensor is approx. 21% bigger than a pixel on Yakumo 47sx.
Pixel density
10.79 MP/cm²
8.89 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: 1.9 µm (21%)
Yakumo 47sx has approx. 21% higher pixel density than Fujifilm 2800 Zoom.
To learn about the accuracy of these numbers, click here.



Specs

Yakumo 47sx
Fujifilm 2800 Zoom
Crop factor
4.87
6.5
Total megapixels
2.10
Effective megapixels
1.90
Optical zoom
Yes
6x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 100, 200, 400
100
RAW
Manual focus
Normal focus range
80 cm
80 cm
Macro focus range
20 cm
10 cm
Focal length (35mm equiv.)
34 - 102 mm
38 - 228 mm
Aperture priority
No
No
Max. aperture
f2.6 - f4.5
f2.8 - f4.8
Max. aperture (35mm equiv.)
f12.7 - f21.9
f18.2 - f31.2
Metering
Centre weighted
Multi, Average, Spot
Exposure compensation
±2 EV (in 1/2 EV steps)
-0.9 - +1.5 EV (in 1/3 EV steps)
Shutter priority
No
No
Min. shutter speed
2 sec
1/2 sec
Max. shutter speed
1/2000 sec
1/1500 sec
Built-in flash
External flash
Viewfinder
Optical
Electronic
White balance presets
4
7
Screen size
1.5"
1.8"
Screen resolution
62,000 dots
Video capture
Max. video resolution
Storage types
CompactFlash type I
SmartMedia
USB
USB 1.1
USB 1.0
HDMI
Wireless
GPS
Battery
4x AA
AA (4) batteries (NiMH recommended)
Weight
252 g
360 g
Dimensions
240 x 150 x 90 mm
95 x 77 x 71 mm
Year
2004
2001




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

Fujifilm 2800 Zoom diagonal

The diagonal of 2800 Zoom sensor is not 1/2.7 or 0.37" (9.4 mm) as you might expect, but approximately two thirds of that value - 6.66 mm. If you want to know why, see sensor sizes.

w = 5.33 mm
h = 4.00 mm
Diagonal =  5.33² + 4.00²   = 6.66 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

2800 Zoom sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 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

2800 Zoom pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 1589 pixels
Pixel pitch =   5.33  × 1000  = 3.35 µm
1589


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

2800 Zoom pixel area

Pixel pitch = 3.35 µm

Pixel area = 3.35² = 11.22 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

2800 Zoom pixel density

Sensor resolution width = 1589 pixels
Sensor width = 0.533 cm

Pixel density = (1589 / 0.533)² / 1000000 = 8.89 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

2800 Zoom sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 1.90
r = 5.33/4.00 = 1.33
X =  1.90 × 1000000  = 1195
1.33
Resolution horizontal: X × r = 1195 × 1.33 = 1589
Resolution vertical: X = 1195

Sensor resolution = 1589 x 1195


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

2800 Zoom crop factor

Sensor diagonal in mm = 6.66 mm
Crop factor =   43.27  = 6.5
6.66

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

2800 Zoom equivalent aperture

Crop factor = 6.5
Aperture = f2.8 - f4.8

35-mm equivalent aperture = (f2.8 - f4.8) × 6.5 = f18.2 - f31.2

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