Canon PowerShot S330 DIGITAL ELPH vs. Panasonic Lumix DMC-G7

Comparison

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PowerShot S330 DIGITAL ELPH image
vs
Lumix DMC-G7 image
Canon PowerShot S330 DIGITAL ELPH Panasonic Lumix DMC-G7
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Megapixels
2.00
16.00
Max. image resolution
1600 x 1200
4592 x 3448

Sensor

Sensor type
CCD
CMOS
Sensor size
1/2.7" (~ 5.33 x 4 mm)
Four Thirds (17.3 x 13 mm)
Sensor resolution
1631 x 1226
4612 x 3468
Diagonal
6.66 mm
21.64 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

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vs
1 : 10.55
(ratio)
Canon PowerShot S330 DIGITAL ELPH Panasonic Lumix DMC-G7
Surface area:
21.32 mm² vs 224.90 mm²
Difference: 203.58 mm² (955%)
G7 sensor is approx. 10.55x bigger than S330 DIGITAL ELPH sensor.
Note: You are comparing sensors of vastly different generations. There is a gap of 13 years between Canon S330 DIGITAL ELPH (2002) and Panasonic G7 (2015). Thirteen years is a huge amount of time, technology wise, resulting in newer sensor being much more efficient than the older one.
Pixel pitch
3.27 µm
3.75 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: 0.48 µm (15%)
Pixel pitch of G7 is approx. 15% higher than pixel pitch of S330 DIGITAL ELPH.
Pixel area
10.69 µm²
14.06 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: 3.37 µm² (32%)
A pixel on Panasonic G7 sensor is approx. 32% bigger than a pixel on Canon S330 DIGITAL ELPH.
Pixel density
9.36 MP/cm²
7.11 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: 2.25 µm (32%)
Canon S330 DIGITAL ELPH has approx. 32% higher pixel density than Panasonic G7.
To learn about the accuracy of these numbers, click here.



Specs

Canon S330 DIGITAL ELPH
Panasonic G7
Crop factor
6.5
2
Total megapixels
2.10
16.84
Effective megapixels
2.00
16.00
Optical zoom
3x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 50, 100, 200, 400
Auto, 100 (Extended), 200, 400, 800, 1600, 3200, 6400, 12800, 25600
RAW
Manual focus
Normal focus range
76 cm
Macro focus range
16 cm
Focal length (35mm equiv.)
35 - 105 mm
Aperture priority
No
Yes
Max. aperture
f2.7 - f4.7
Max. aperture (35mm equiv.)
f17.6 - f30.6
n/a
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±5 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
15 sec
60 sec
Max. shutter speed
1/1500 sec
1/16000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Electronic
White balance presets
6
5
Screen size
1.5"
3"
Screen resolution
118,000 dots
1,040,000 dots
Video capture
Max. video resolution
3840x2160 (30p/25p/24p)
Storage types
Compact Flash (Type I)
SD/SDHC/SDXC
USB
USB 1.0
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Canon NB-L1H 840 mAh Lithium-Ion
Li-ion Battery Pack
Weight
274 g
410 g
Dimensions
95 x 63 x 32 mm
124.9 x 86.2 x 77.4 mm
Year
2002
2015




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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

Canon S330 DIGITAL ELPH diagonal

The diagonal of S330 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
Diagonal =  5.33² + 4.00²   = 6.66 mm

Panasonic G7 diagonal

w = 17.30 mm
h = 13.00 mm
Diagonal =  17.30² + 13.00²   = 21.64 mm


Surface area

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

S330 DIGITAL ELPH sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 mm²

G7 sensor area

Width = 17.30 mm
Height = 13.00 mm

Surface area = 17.30 × 13.00 = 224.90 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

S330 DIGITAL ELPH pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 1631 pixels
Pixel pitch =   5.33  × 1000  = 3.27 µm
1631

G7 pixel pitch

Sensor width = 17.30 mm
Sensor resolution width = 4612 pixels
Pixel pitch =   17.30  × 1000  = 3.75 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

S330 DIGITAL ELPH pixel area

Pixel pitch = 3.27 µm

Pixel area = 3.27² = 10.69 µm²

G7 pixel area

Pixel pitch = 3.75 µm

Pixel area = 3.75² = 14.06 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

S330 DIGITAL ELPH pixel density

Sensor resolution width = 1631 pixels
Sensor width = 0.533 cm

Pixel density = (1631 / 0.533)² / 1000000 = 9.36 MP/cm²

G7 pixel density

Sensor resolution width = 4612 pixels
Sensor width = 1.73 cm

Pixel density = (4612 / 1.73)² / 1000000 = 7.11 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

S330 DIGITAL ELPH sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 2.00
r = 5.33/4.00 = 1.33
X =  2.00 × 1000000  = 1226
1.33
Resolution horizontal: X × r = 1226 × 1.33 = 1631
Resolution vertical: X = 1226

Sensor resolution = 1631 x 1226

G7 sensor resolution

Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 16.00
r = 17.30/13.00 = 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


S330 DIGITAL ELPH crop factor

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

G7 crop factor

Sensor diagonal in mm = 21.64 mm
Crop factor =   43.27  = 2
21.64

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).

S330 DIGITAL ELPH equivalent aperture

Crop factor = 6.5
Aperture = f2.7 - f4.7

35-mm equivalent aperture = (f2.7 - f4.7) × 6.5 = f17.6 - f30.6

G7 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 Panasonic G7, take the aperture of the lens you're using and multiply it with crop factor.

Crop factor for Panasonic G7 is 2

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