Panasonic Lumix DMC-FS3 vs. Canon PowerShot S70

Comparison

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Lumix DMC-FS3 image
vs
PowerShot S70 image
Panasonic Lumix DMC-FS3 Canon PowerShot S70
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Megapixels
8.10
7.10
Max. image resolution
3264 x 2448
3072 x 2304

Sensor

Sensor type
CCD
CCD
Sensor size
1/2.5" (~ 5.75 x 4.32 mm)
1/1.8" (~ 7.11 x 5.33 mm)
Sensor resolution
3282 x 2468
3072 x 2310
Diagonal
7.19 mm
8.89 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 : 1.53
(ratio)
Panasonic Lumix DMC-FS3 Canon PowerShot S70
Surface area:
24.84 mm² vs 37.90 mm²
Difference: 13.06 mm² (53%)
S70 sensor is approx. 1.53x bigger than FS3 sensor.
Note: You are comparing cameras of different generations. There is a 4 year gap between Panasonic FS3 (2008) and Canon S70 (2004). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
1.75 µm
2.31 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: 0.56 µm (32%)
Pixel pitch of S70 is approx. 32% higher than pixel pitch of FS3.
Pixel area
3.06 µm²
5.34 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: 2.28 µm² (75%)
A pixel on Canon S70 sensor is approx. 75% bigger than a pixel on Panasonic FS3.
Pixel density
32.58 MP/cm²
18.67 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: 13.91 µm (75%)
Panasonic FS3 has approx. 75% higher pixel density than Canon S70.
To learn about the accuracy of these numbers, click here.



Specs

Panasonic FS3
Canon S70
Crop factor
6.02
4.87
Total megapixels
8.30
7.10
Effective megapixels
8.10
7.10
Optical zoom
3x
3.6x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, Hi Auto, (1600-6400), 100, 200, 400, 800, 1600
Auto, 50, 100, 200, 400
RAW
Manual focus
Normal focus range
50 cm
50 cm
Macro focus range
5 cm
4 cm
Focal length (35mm equiv.)
33 - 100 mm
28 - 100 mm
Aperture priority
No
Yes
Max. aperture
f2.8 - f5.1
f2.8 - f5.3
Max. aperture (35mm equiv.)
f16.9 - f30.7
f13.6 - f25.8
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
60 sec
15 sec
Max. shutter speed
1/2000 sec
1/2000 sec
Built-in flash
External flash
Viewfinder
None
Optical (tunnel)
White balance presets
4
7
Screen size
2.5"
1.8"
Screen resolution
230,000 dots
118,000 dots
Video capture
Max. video resolution
Storage types
SD/MMC/SDHC card, Internal
Compact Flash (Type I or II)
USB
USB 2.0 (480 Mbit/sec)
USB 1.0
HDMI
Wireless
GPS
Battery
Lithium-Ion rechargeable
Canon Lithium-Ion
Weight
158 g
300 g
Dimensions
95 x 53 x 23 mm
114 x 57 x 39 mm
Year
2008
2004




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

Panasonic FS3 diagonal

The diagonal of FS3 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
Diagonal =  5.75² + 4.32²   = 7.19 mm

Canon S70 diagonal

The diagonal of S70 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


Surface area

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

FS3 sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 mm²

S70 sensor area

Width = 7.11 mm
Height = 5.33 mm

Surface area = 7.11 × 5.33 = 37.90 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

FS3 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 3282 pixels
Pixel pitch =   5.75  × 1000  = 1.75 µm
3282

S70 pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 3072 pixels
Pixel pitch =   7.11  × 1000  = 2.31 µm
3072


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

FS3 pixel area

Pixel pitch = 1.75 µm

Pixel area = 1.75² = 3.06 µm²

S70 pixel area

Pixel pitch = 2.31 µm

Pixel area = 2.31² = 5.34 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

FS3 pixel density

Sensor resolution width = 3282 pixels
Sensor width = 0.575 cm

Pixel density = (3282 / 0.575)² / 1000000 = 32.58 MP/cm²

S70 pixel density

Sensor resolution width = 3072 pixels
Sensor width = 0.711 cm

Pixel density = (3072 / 0.711)² / 1000000 = 18.67 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

FS3 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 8.10
r = 5.75/4.32 = 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

S70 sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 7.10
r = 7.11/5.33 = 1.33
X =  7.10 × 1000000  = 2310
1.33
Resolution horizontal: X × r = 2310 × 1.33 = 3072
Resolution vertical: X = 2310

Sensor resolution = 3072 x 2310


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


FS3 crop factor

Sensor diagonal in mm = 7.19 mm
Crop factor =   43.27  = 6.02
7.19

S70 crop factor

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

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).

FS3 equivalent aperture

Crop factor = 6.02
Aperture = f2.8 - f5.1

35-mm equivalent aperture = (f2.8 - f5.1) × 6.02 = f16.9 - f30.7

S70 equivalent aperture

Crop factor = 4.87
Aperture = f2.8 - f5.3

35-mm equivalent aperture = (f2.8 - f5.3) × 4.87 = f13.6 - f25.8

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