Canon Digital IXUS v3 vs. Canon Digital IXUS v2
Comparison
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| Canon Digital IXUS v3 | Canon Digital IXUS v2 | ||||
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Megapixels
3.20
2.00
Max. image resolution
2048 x 1536
1600 x 1200
Sensor
Sensor type
CCD
CCD
Sensor size
1/2.7" (~ 5.33 x 4 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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| Canon Digital IXUS v3 | Canon Digital IXUS v2 | |
Surface area:
| 21.32 mm² | vs | 21.32 mm² |
Difference: 0 mm² (0%)
IXUS v3 and IXUS v2 sensors are the same size.
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: 4.03 µm² (61%)
A pixel on Canon IXUS v2 sensor is approx. 61% bigger than a pixel on Canon IXUS v3.
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
Canon IXUS v3
Canon IXUS v2
Total megapixels
3.30
2.10
Effective megapixels
3.20
2.00
Optical zoom
2x
2x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 50, 100, 200, 400
Auto, 50, 100, 200, 400
RAW
Manual focus
Normal focus range
47 cm
57 cm
Macro focus range
10 cm
10 cm
Focal length (35mm equiv.)
35 - 70 mm
35 - 70 mm
Aperture priority
No
No
Max. aperture
f2.8 - f4.0
f2.8 - f4.0
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
No
Min. shutter speed
15 sec
15 sec
Max. shutter speed
1/1500 sec
1/1500 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Optical (tunnel)
White balance presets
6
6
Screen size
1.5"
1.5"
Screen resolution
120,000 dots
118,000 dots
Video capture
Max. video resolution
Storage types
Compact Flash (Type I)
Compact Flash (Type I)
USB
USB 1.0
USB 1.0
HDMI
Wireless
GPS
Battery
Canon Lithium-Ion
Canon Lithium-Ion
Weight
250 g
250 g
Dimensions
87 x 57 x 27 mm
87 x 57 x 27 mm
Year
2002
2002
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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 |
Canon IXUS v3 diagonal
The diagonal of IXUS v3 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 |
Canon IXUS v2 diagonal
The diagonal of IXUS v2 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.
IXUS v3 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
IXUS v2 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 |
IXUS v3 pixel pitch
Sensor width = 5.33 mm
Sensor resolution width = 2063 pixels
Sensor resolution width = 2063 pixels
| Pixel pitch = | 5.33 | × 1000 | = 2.58 µm |
| 2063 |
IXUS v2 pixel pitch
Sensor width = 5.33 mm
Sensor resolution width = 1631 pixels
Sensor resolution width = 1631 pixels
| Pixel pitch = | 5.33 | × 1000 | = 3.27 µm |
| 1631 |
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 |
IXUS v3 pixel area
Pixel pitch = 2.58 µm
Pixel area = 2.58² = 6.66 µm²
Pixel area = 2.58² = 6.66 µm²
IXUS v2 pixel area
Pixel pitch = 3.27 µm
Pixel area = 3.27² = 10.69 µm²
Pixel area = 3.27² = 10.69 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 |
IXUS v3 pixel density
Sensor resolution width = 2063 pixels
Sensor width = 0.533 cm
Pixel density = (2063 / 0.533)² / 1000000 = 14.98 MP/cm²
Sensor width = 0.533 cm
Pixel density = (2063 / 0.533)² / 1000000 = 14.98 MP/cm²
IXUS v2 pixel density
Sensor resolution width = 1631 pixels
Sensor width = 0.533 cm
Pixel density = (1631 / 0.533)² / 1000000 = 9.36 MP/cm²
Sensor width = 0.533 cm
Pixel density = (1631 / 0.533)² / 1000000 = 9.36 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 → |
|
Resolution horizontal: X × r
Resolution vertical: X
IXUS v3 sensor resolution
Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 3.20
Resolution horizontal: X × r = 1551 × 1.33 = 2063
Resolution vertical: X = 1551
Sensor resolution = 2063 x 1551
Sensor height = 4.00 mm
Effective megapixels = 3.20
| r = 5.33/4.00 = 1.33 |
|
Resolution vertical: X = 1551
Sensor resolution = 2063 x 1551
IXUS v2 sensor resolution
Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 2.00
Resolution horizontal: X × r = 1226 × 1.33 = 1631
Resolution vertical: X = 1226
Sensor resolution = 1631 x 1226
Sensor height = 4.00 mm
Effective megapixels = 2.00
| r = 5.33/4.00 = 1.33 |
|
Resolution vertical: X = 1226
Sensor resolution = 1631 x 1226
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 |
IXUS v3 crop factor
Sensor diagonal in mm = 6.66 mm
| Crop factor = | 43.27 | = 6.5 |
| 6.66 |
IXUS v2 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).
IXUS v3 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
IXUS v2 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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