Fujifilm FinePix A825 vs. Canon PowerShot S100 DIGITAL ELPH
Comparison
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Fujifilm FinePix A825 | Canon PowerShot S100 DIGITAL ELPH | ||||
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Megapixels
8.30
2.02
Max. image resolution
3296 x 2472
1600 x 1200
Sensor
Sensor type
CCD
CCD
Sensor size
1/1.6" (~ 8 x 6 mm)
1/2.7" (~ 5.33 x 4 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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2.25 | : | 1 |
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Fujifilm FinePix A825 | Canon PowerShot S100 DIGITAL ELPH |
Surface area:
48.00 mm² | vs | 21.32 mm² |
Difference: 26.68 mm² (125%)
A825 sensor is approx. 2.25x bigger than S100 DIGITAL ELPH sensor.
Note: You are comparing sensors of very different generations.
There is a gap of 7 years between Fujifilm A825 (2007) and Canon S100 DIGITAL ELPH (2000).
Seven years is a lot of time in terms
of technology, meaning newer sensors are overall much more
efficient than the older ones.
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: 4.75 µm² (82%)
A pixel on Canon S100 DIGITAL ELPH sensor is approx. 82% bigger than a pixel on Fujifilm A825.
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
Fujifilm A825
Canon S100 DIGITAL ELPH
Total megapixels
2.11
Effective megapixels
2.02
Optical zoom
Yes
2x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 100, 200, 400, 800
100
RAW
Manual focus
Normal focus range
60 cm
57 cm
Macro focus range
10 cm
10 cm
Focal length (35mm equiv.)
39 - 156 mm
35 - 70 mm
Aperture priority
No
No
Max. aperture
f2.9 - f6.3
f2.8 - f4.0
Metering
256-segment Matrix
Multi, Center-weighted, Spot
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
1 sec
Max. shutter speed
1/1200 sec
1/1500 sec
Built-in flash
External flash
Viewfinder
None
Optical (tunnel)
White balance presets
6
5
Screen size
2.5"
1.5"
Screen resolution
115,000 dots
120,000 dots
Video capture
Max. video resolution
Storage types
Secure Digital, xD Picture card
Compact Flash (Type I)
USB
USB 2.0 (480 Mbit/sec)
USB 1.0
HDMI
Wireless
GPS
Battery
2x AA
Canon Lithium-Ion
Weight
195 g
250 g
Dimensions
97 x 62 x 31 mm
87 x 57 x 27 mm
Year
2007
2000
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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 |
Fujifilm A825 diagonal
The diagonal of A825 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
w = 8.00 mm
h = 6.00 mm
Diagonal = √ | 8.00² + 6.00² | = 10.00 mm |
Canon S100 DIGITAL ELPH diagonal
The diagonal of S100 DIGITAL ELPH 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
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.
A825 sensor area
Width = 8.00 mm
Height = 6.00 mm
Surface area = 8.00 × 6.00 = 48.00 mm²
Height = 6.00 mm
Surface area = 8.00 × 6.00 = 48.00 mm²
S100 DIGITAL ELPH sensor area
Width = 5.33 mm
Height = 4.00 mm
Surface area = 5.33 × 4.00 = 21.32 mm²
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 |
A825 pixel pitch
Sensor width = 8.00 mm
Sensor resolution width = 3322 pixels
Sensor resolution width = 3322 pixels
Pixel pitch = | 8.00 | × 1000 | = 2.41 µm |
3322 |
S100 DIGITAL ELPH pixel pitch
Sensor width = 5.33 mm
Sensor resolution width = 1639 pixels
Sensor resolution width = 1639 pixels
Pixel pitch = | 5.33 | × 1000 | = 3.25 µm |
1639 |
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 |
A825 pixel area
Pixel pitch = 2.41 µm
Pixel area = 2.41² = 5.81 µm²
Pixel area = 2.41² = 5.81 µm²
S100 DIGITAL ELPH pixel area
Pixel pitch = 3.25 µm
Pixel area = 3.25² = 10.56 µm²
Pixel area = 3.25² = 10.56 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 |
A825 pixel density
Sensor resolution width = 3322 pixels
Sensor width = 0.8 cm
Pixel density = (3322 / 0.8)² / 1000000 = 17.24 MP/cm²
Sensor width = 0.8 cm
Pixel density = (3322 / 0.8)² / 1000000 = 17.24 MP/cm²
S100 DIGITAL ELPH pixel density
Sensor resolution width = 1639 pixels
Sensor width = 0.533 cm
Pixel density = (1639 / 0.533)² / 1000000 = 9.46 MP/cm²
Sensor width = 0.533 cm
Pixel density = (1639 / 0.533)² / 1000000 = 9.46 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 → |
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Resolution horizontal: X × r
Resolution vertical: X
A825 sensor resolution
Sensor width = 8.00 mm
Sensor height = 6.00 mm
Effective megapixels = 8.30
Resolution horizontal: X × r = 2498 × 1.33 = 3322
Resolution vertical: X = 2498
Sensor resolution = 3322 x 2498
Sensor height = 6.00 mm
Effective megapixels = 8.30
r = 8.00/6.00 = 1.33 |
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Resolution vertical: X = 2498
Sensor resolution = 3322 x 2498
S100 DIGITAL ELPH sensor resolution
Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 2.02
Resolution horizontal: X × r = 1232 × 1.33 = 1639
Resolution vertical: X = 1232
Sensor resolution = 1639 x 1232
Sensor height = 4.00 mm
Effective megapixels = 2.02
r = 5.33/4.00 = 1.33 |
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Resolution vertical: X = 1232
Sensor resolution = 1639 x 1232
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 |
A825 crop factor
Sensor diagonal in mm = 10.00 mm
Crop factor = | 43.27 | = 4.33 |
10.00 |
S100 DIGITAL ELPH 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).
A825 equivalent aperture
Crop factor = 4.33
Aperture = f2.9 - f6.3
35-mm equivalent aperture = (f2.9 - f6.3) × 4.33 = f12.6 - f27.3
Aperture = f2.9 - f6.3
35-mm equivalent aperture = (f2.9 - f6.3) × 4.33 = f12.6 - f27.3
S100 DIGITAL ELPH equivalent aperture
Crop factor = 6.5
Aperture = f2.8 - f4.0
35-mm equivalent aperture = (f2.8 - f4.0) × 6.5 = f18.2 - f26
Aperture = f2.8 - f4.0
35-mm equivalent aperture = (f2.8 - f4.0) × 6.5 = f18.2 - f26
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