Fujifilm FinePix S5700 Zoom vs. Pentax K100D
Comparison
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Fujifilm FinePix S5700 Zoom | Pentax K100D | ||||
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Megapixels
7.10
6.10
Max. image resolution
3072 x 2304
3008 x 2008
Sensor
Sensor type
CCD
CCD
Sensor size
1/2.5" (~ 5.75 x 4.32 mm)
23.5 x 15.7 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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1 | : | 14.85 |
(ratio) | ||
Fujifilm FinePix S5700 Zoom | Pentax K100D |
Surface area:
24.84 mm² | vs | 368.95 mm² |
Difference: 344.11 mm² (1385%)
K100D sensor is approx. 14.85x bigger than S5700 Zoom sensor.
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: 56.87 µm² (1625%)
A pixel on Pentax K100D sensor is approx. 1625% bigger than a pixel on Fujifilm S5700 Zoom.
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 S5700 Zoom
Pentax K100D
Total megapixels
7.10
6.31
Effective megapixels
7.10
6.10
Optical zoom
10x
Digital zoom
Yes
No
ISO sensitivity
Auto, 64, 100, 200, 400, 800, 1600
Auto, 200, 400, 800, 1600, 3200
RAW
Manual focus
Normal focus range
30 cm
Macro focus range
10 cm
Focal length (35mm equiv.)
38 - 380 mm
Aperture priority
Yes
Yes
Max. aperture
f3.5 - f13.6
Metering
Multi, Average, Spot
Centre weighted, Multi-segment, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV, 1/2 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
4 sec
30 sec
Max. shutter speed
1/1000 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Electronic
Optical (pentamirror)
White balance presets
7
7
Screen size
2.5"
2.5"
Screen resolution
230,000 dots
210,000 dots
Video capture
Max. video resolution
Storage types
xD Picture Card
Secure Digital
USB
USB 1.0
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
AA (4) batteries (NiMH recommended)
AA (4) batteries (NiMH recommended)
Weight
406 g
560 g
Dimensions
106 x 76 x 81 mm
129.5 x 92.5 x 70 mm
Year
2007
2006
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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 S5700 Zoom diagonal
The diagonal of S5700 Zoom sensor is not 1/2.5 or 0.4" (10.2 mm) as you might expect, but approximately two thirds of
that value - 7.19 mm. If you want to know why, see
sensor sizes.
w = 5.75 mm
h = 4.32 mm
w = 5.75 mm
h = 4.32 mm
Diagonal = √ | 5.75² + 4.32² | = 7.19 mm |
Pentax K100D diagonal
w = 23.50 mm
h = 15.70 mm
h = 15.70 mm
Diagonal = √ | 23.50² + 15.70² | = 28.26 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
S5700 Zoom sensor area
Width = 5.75 mm
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
K100D sensor area
Width = 23.50 mm
Height = 15.70 mm
Surface area = 23.50 × 15.70 = 368.95 mm²
Height = 15.70 mm
Surface area = 23.50 × 15.70 = 368.95 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 |
S5700 Zoom pixel pitch
Sensor width = 5.75 mm
Sensor resolution width = 3072 pixels
Sensor resolution width = 3072 pixels
Pixel pitch = | 5.75 | × 1000 | = 1.87 µm |
3072 |
K100D pixel pitch
Sensor width = 23.50 mm
Sensor resolution width = 3026 pixels
Sensor resolution width = 3026 pixels
Pixel pitch = | 23.50 | × 1000 | = 7.77 µm |
3026 |
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 |
S5700 Zoom pixel area
Pixel pitch = 1.87 µm
Pixel area = 1.87² = 3.5 µm²
Pixel area = 1.87² = 3.5 µm²
K100D pixel area
Pixel pitch = 7.77 µm
Pixel area = 7.77² = 60.37 µm²
Pixel area = 7.77² = 60.37 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 |
S5700 Zoom pixel density
Sensor resolution width = 3072 pixels
Sensor width = 0.575 cm
Pixel density = (3072 / 0.575)² / 1000000 = 28.54 MP/cm²
Sensor width = 0.575 cm
Pixel density = (3072 / 0.575)² / 1000000 = 28.54 MP/cm²
K100D pixel density
Sensor resolution width = 3026 pixels
Sensor width = 2.35 cm
Pixel density = (3026 / 2.35)² / 1000000 = 1.66 MP/cm²
Sensor width = 2.35 cm
Pixel density = (3026 / 2.35)² / 1000000 = 1.66 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
S5700 Zoom sensor resolution
Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 7.10
Resolution horizontal: X × r = 2310 × 1.33 = 3072
Resolution vertical: X = 2310
Sensor resolution = 3072 x 2310
Sensor height = 4.32 mm
Effective megapixels = 7.10
r = 5.75/4.32 = 1.33 |
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Resolution vertical: X = 2310
Sensor resolution = 3072 x 2310
K100D sensor resolution
Sensor width = 23.50 mm
Sensor height = 15.70 mm
Effective megapixels = 6.10
Resolution horizontal: X × r = 2017 × 1.5 = 3026
Resolution vertical: X = 2017
Sensor resolution = 3026 x 2017
Sensor height = 15.70 mm
Effective megapixels = 6.10
r = 23.50/15.70 = 1.5 |
|
Resolution vertical: X = 2017
Sensor resolution = 3026 x 2017
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 |
S5700 Zoom crop factor
Sensor diagonal in mm = 7.19 mm
Crop factor = | 43.27 | = 6.02 |
7.19 |
K100D crop factor
Sensor diagonal in mm = 28.26 mm
Crop factor = | 43.27 | = 1.53 |
28.26 |
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).
S5700 Zoom equivalent aperture
Crop factor = 6.02
Aperture = f3.5 - f13.6
35-mm equivalent aperture = (f3.5 - f13.6) × 6.02 = f21.1 - f81.9
Aperture = f3.5 - f13.6
35-mm equivalent aperture = (f3.5 - f13.6) × 6.02 = f21.1 - f81.9
K100D 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
Pentax K100D, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Pentax K100D is 1.53
Crop factor for Pentax K100D is 1.53
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