Canon PowerShot ELPH 510 HS vs. Epson PhotoPC 3100 Zoom

Comparison

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PowerShot ELPH 510 HS image
vs
PhotoPC 3100 Zoom image
Canon PowerShot ELPH 510 HS Epson PhotoPC 3100 Zoom
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Megapixels
12.10
3.34
Max. image resolution
4000 x 3000
2544 x 1904

Sensor

Sensor type
CMOS
CCD
Sensor size
1/2.3" (~ 6.16 x 4.62 mm)
1/1.8" (~ 7.11 x 5.33 mm)
Sensor resolution
4011 x 3016
2108 x 1585
Diagonal
7.70 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 : 1.33
(ratio)
Canon PowerShot ELPH 510 HS Epson PhotoPC 3100 Zoom
Surface area:
28.46 mm² vs 37.90 mm²
Difference: 9.44 mm² (33%)
3100 Zoom sensor is approx. 1.33x bigger than ELPH 510 HS sensor.
Note: You are comparing sensors of very different generations. There is a gap of 10 years between Canon ELPH 510 HS (2011) and Epson 3100 Zoom (2001). Ten years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
1.54 µm
3.37 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: 1.83 µm (119%)
Pixel pitch of 3100 Zoom is approx. 119% higher than pixel pitch of ELPH 510 HS.
Pixel area
2.37 µm²
11.36 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: 8.99 µm² (379%)
A pixel on Epson 3100 Zoom sensor is approx. 379% bigger than a pixel on Canon ELPH 510 HS.
Pixel density
42.4 MP/cm²
8.79 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: 33.61 µm (382%)
Canon ELPH 510 HS has approx. 382% higher pixel density than Epson 3100 Zoom.
To learn about the accuracy of these numbers, click here.



Specs

Canon ELPH 510 HS
Epson 3100 Zoom
Crop factor
5.62
4.87
Total megapixels
Effective megapixels
12.10
Optical zoom
12x
3x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 100 - 3200
100, 200, 400
RAW
Manual focus
Normal focus range
50 cm
Macro focus range
1 cm
5 cm
Focal length (35mm equiv.)
28 - 336 mm
34 - 102 mm
Aperture priority
No
Yes
Max. aperture
f3.4 - f5.9
f2.0 - f2.5
Max. aperture (35mm equiv.)
f19.1 - f33.2
f9.7 - f12.2
Metering
Centre weighted, Matrix, Spot
256-segment Matrix, Spot
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV, 1/2 EV steps)
Shutter priority
No
Yes
Min. shutter speed
15 sec
8 sec
Max. shutter speed
1/1400 sec
1/1000 sec
Built-in flash
External flash
Viewfinder
None
Optical (tunnel)
White balance presets
5
4
Screen size
3.2"
1.8"
Screen resolution
461,000 dots
72,000 dots
Video capture
Max. video resolution
Storage types
SDHC, SDXC, Secure Digital
CompactFlash type I
USB
USB 2.0 (480 Mbit/sec)
USB 1.0
HDMI
Wireless
GPS
Battery
Lithium-Ion NB-9L battery
AA NiMH (4) batteries (supplied)
Weight
206 g
360 g
Dimensions
99 x 59 x 22 mm
107 x 88 x 65 mm
Year
2011
2001




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vs

Diagonal

Diagonal is calculated by the use of Pythagorean theorem:
Diagonal =  w² + h²
where w = sensor width and h = sensor height

Canon ELPH 510 HS diagonal

The diagonal of ELPH 510 HS 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

Epson 3100 Zoom diagonal

The diagonal of 3100 Zoom 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.

ELPH 510 HS sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 mm²

3100 Zoom 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

ELPH 510 HS pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4011 pixels
Pixel pitch =   6.16  × 1000  = 1.54 µm
4011

3100 Zoom pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2108 pixels
Pixel pitch =   7.11  × 1000  = 3.37 µm
2108


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

ELPH 510 HS pixel area

Pixel pitch = 1.54 µm

Pixel area = 1.54² = 2.37 µm²

3100 Zoom pixel area

Pixel pitch = 3.37 µm

Pixel area = 3.37² = 11.36 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

ELPH 510 HS pixel density

Sensor resolution width = 4011 pixels
Sensor width = 0.616 cm

Pixel density = (4011 / 0.616)² / 1000000 = 42.4 MP/cm²

3100 Zoom pixel density

Sensor resolution width = 2108 pixels
Sensor width = 0.711 cm

Pixel density = (2108 / 0.711)² / 1000000 = 8.79 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

ELPH 510 HS sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 12.10
r = 6.16/4.62 = 1.33
X =  12.10 × 1000000  = 3016
1.33
Resolution horizontal: X × r = 3016 × 1.33 = 4011
Resolution vertical: X = 3016

Sensor resolution = 4011 x 3016

3100 Zoom sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 3.34
r = 7.11/5.33 = 1.33
X =  3.34 × 1000000  = 1585
1.33
Resolution horizontal: X × r = 1585 × 1.33 = 2108
Resolution vertical: X = 1585

Sensor resolution = 2108 x 1585


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


ELPH 510 HS crop factor

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

3100 Zoom 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).

ELPH 510 HS equivalent aperture

Crop factor = 5.62
Aperture = f3.4 - f5.9

35-mm equivalent aperture = (f3.4 - f5.9) × 5.62 = f19.1 - f33.2

3100 Zoom equivalent aperture

Crop factor = 4.87
Aperture = f2.0 - f2.5

35-mm equivalent aperture = (f2.0 - f2.5) × 4.87 = f9.7 - f12.2

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