Fujifilm FinePix A820 vs. Nikon Coolpix S6300

Comparison

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FinePix A820 image
vs
Coolpix S6300 image
Fujifilm FinePix A820 Nikon Coolpix S6300
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Megapixels
8.10
16.00
Max. image resolution
3296 x 2472
4608 x 3456

Sensor

Sensor type
CCD
CMOS
Sensor size
1/1.6" (~ 8 x 6 mm)
1/2.3" (~ 6.16 x 4.62 mm)
Sensor resolution
3282 x 2468
4612 x 3468
Diagonal
10.00 mm
7.70 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
1.69 : 1
(ratio)
Fujifilm FinePix A820 Nikon Coolpix S6300
Surface area:
48.00 mm² vs 28.46 mm²
Difference: 19.54 mm² (69%)
A820 sensor is approx. 1.69x bigger than S6300 sensor.
Note: You are comparing cameras of different generations. There is a 5 year gap between Fujifilm A820 (2007) and Nikon S6300 (2012). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
2.44 µm
1.34 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: 1.1 µm (82%)
Pixel pitch of A820 is approx. 82% higher than pixel pitch of S6300.
Pixel area
5.95 µm²
1.8 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: 4.15 µm² (231%)
A pixel on Fujifilm A820 sensor is approx. 231% bigger than a pixel on Nikon S6300.
Pixel density
16.83 MP/cm²
56.06 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: 39.23 µm (233%)
Nikon S6300 has approx. 233% higher pixel density than Fujifilm A820.
To learn about the accuracy of these numbers, click here.



Specs

Fujifilm A820
Nikon S6300
Crop factor
4.33
5.62
Total megapixels
8.30
16.80
Effective megapixels
8.10
16.00
Optical zoom
4x
10x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 100, 200, 400, 800
Auto, 125, 200, 400, 800, 1600, 3200
RAW
Manual focus
Normal focus range
60 cm
50 cm
Macro focus range
10 cm
10 cm
Focal length (35mm equiv.)
39 - 156 mm
25 - 250 mm
Aperture priority
No
No
Max. aperture
f3.9 - f6.3
f3.2 - f5.8
Max. aperture (35mm equiv.)
f16.9 - f27.3
f18 - f32.6
Metering
256-segment Matrix
Multi, Center-weighted, Spot, Spot AF-area
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
No
Min. shutter speed
4 sec
30 sec
Max. shutter speed
1/1200 sec
1/8000 sec
Built-in flash
External flash
Viewfinder
None
None
White balance presets
6
5
Screen size
2.5"
2.7"
Screen resolution
115,000 dots
230,000 dots
Video capture
Max. video resolution
Storage types
Secure Digital, xD Picture card
SD/SDHC/SDXC
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
AA (2) batteries (NiMH recommended)
Nikon EN-EL12 Lithium-Ion battery
Weight
205 g
160 g
Dimensions
98 x 62 x 32 mm
94 x 58 x 26 mm
Year
2007
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

Fujifilm A820 diagonal

The diagonal of A820 sensor is not 1/1.6 or 0.63" (15.9 mm) as you might expect, but approximately two thirds of that value - 10 mm. If you want to know why, see sensor sizes.

w = 8.00 mm
h = 6.00 mm
Diagonal =  8.00² + 6.00²   = 10.00 mm

Nikon S6300 diagonal

The diagonal of S6300 sensor is not 1/2.3 or 0.43" (11 mm) as you might expect, but approximately two thirds of that value - 7.7 mm. If you want to know why, see sensor sizes.

w = 6.16 mm
h = 4.62 mm
Diagonal =  6.16² + 4.62²   = 7.70 mm


Surface area

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

A820 sensor area

Width = 8.00 mm
Height = 6.00 mm

Surface area = 8.00 × 6.00 = 48.00 mm²

S6300 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 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

A820 pixel pitch

Sensor width = 8.00 mm
Sensor resolution width = 3282 pixels
Pixel pitch =   8.00  × 1000  = 2.44 µm
3282

S6300 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4612 pixels
Pixel pitch =   6.16  × 1000  = 1.34 µm
4612


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

A820 pixel area

Pixel pitch = 2.44 µm

Pixel area = 2.44² = 5.95 µm²

S6300 pixel area

Pixel pitch = 1.34 µm

Pixel area = 1.34² = 1.8 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

A820 pixel density

Sensor resolution width = 3282 pixels
Sensor width = 0.8 cm

Pixel density = (3282 / 0.8)² / 1000000 = 16.83 MP/cm²

S6300 pixel density

Sensor resolution width = 4612 pixels
Sensor width = 0.616 cm

Pixel density = (4612 / 0.616)² / 1000000 = 56.06 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

A820 sensor resolution

Sensor width = 8.00 mm
Sensor height = 6.00 mm
Effective megapixels = 8.10
r = 8.00/6.00 = 1.33
X =  8.10 × 1000000  = 2468
1.33
Resolution horizontal: X × r = 2468 × 1.33 = 3282
Resolution vertical: X = 2468

Sensor resolution = 3282 x 2468

S6300 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 16.00
r = 6.16/4.62 = 1.33
X =  16.00 × 1000000  = 3468
1.33
Resolution horizontal: X × r = 3468 × 1.33 = 4612
Resolution vertical: X = 3468

Sensor resolution = 4612 x 3468


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


A820 crop factor

Sensor diagonal in mm = 10.00 mm
Crop factor =   43.27  = 4.33
10.00

S6300 crop factor

Sensor diagonal in mm = 7.70 mm
Crop factor =   43.27  = 5.62
7.70

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).

A820 equivalent aperture

Crop factor = 4.33
Aperture = f3.9 - f6.3

35-mm equivalent aperture = (f3.9 - f6.3) × 4.33 = f16.9 - f27.3

S6300 equivalent aperture

Crop factor = 5.62
Aperture = f3.2 - f5.8

35-mm equivalent aperture = (f3.2 - f5.8) × 5.62 = f18 - f32.6

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