Canon PowerShot SD700 IS vs. Canon IXY 640
Comparison
change cameras » | |||||
|
vs |
|
|||
Canon PowerShot SD700 IS | Canon IXY 640 | ||||
check price » | check price » |
Megapixels
6.00
20.20
Max. image resolution
2816 x 2112
5184 x 3888
Sensor
Sensor type
CCD
CMOS
Sensor size
1/2.5" (~ 5.75 x 4.32 mm)
1/2.3" (~ 6.16 x 4.62 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 »
|
vs |
|
1 | : | 1.15 |
(ratio) | ||
Canon PowerShot SD700 IS | Canon IXY 640 |
Surface area:
24.84 mm² | vs | 28.46 mm² |
Difference: 3.62 mm² (15%)
IXY 640 sensor is approx. 1.15x bigger than SD700 IS sensor.
Note: You are comparing sensors of very different generations.
There is a gap of 9 years between Canon SD700 IS (2006) and Canon IXY 640 (2015).
Nine years is a lot of time in terms
of technology, meaning newer sensors are overall much more
efficient than the older ones.
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: 2.74 µm² (193%)
A pixel on Canon SD700 IS sensor is approx. 193% bigger than a pixel on Canon IXY 640.
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 SD700 IS
Canon IXY 640
Total megapixels
6.20
21.10
Effective megapixels
6.00
20.20
Optical zoom
4x
12x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 80 ,100, 200, 400, 800
Auto, 80-1600
RAW
Manual focus
Normal focus range
45 cm
5 cm
Macro focus range
2 cm
1 cm
Focal length (35mm equiv.)
35 - 140 mm
25 - 300 mm
Aperture priority
No
No
Max. aperture
f2.8 - f5.5
f3.6 - f7.0
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
1/1600 sec
1/2000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
None
White balance presets
5
5
Screen size
2.5"
3"
Screen resolution
173,000 dots
461,000 dots
Video capture
Max. video resolution
1920x1080 (30p)
Storage types
SD/MMC card
SD/SDHC/SDXC
USB
USB 2.0 (480 Mbit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Lithium-Ion NB-5L battery
Battery Pack NB-11L/NB-11LH
Weight
195 g
147 g
Dimensions
90 x 57 x 26 mm
99.6 x 58.0 x 22.8 mm
Year
2006
2015
Choose cameras to compare
Popular comparisons:
- Canon PowerShot SD700 IS vs. Canon PowerShot S100
- Canon PowerShot SD700 IS vs. Canon PowerShot ELPH 330 HS
- Canon PowerShot SD700 IS vs. Canon PowerShot SD750
- Canon PowerShot SD700 IS vs. Canon PowerShot SD1400 IS
- Canon PowerShot SD700 IS vs. Fujifilm FinePix HS50 EXR
- Canon PowerShot SD700 IS vs. Canon PowerShot SX700 HS
- Canon PowerShot SD700 IS vs. Canon PowerShot SD550
- Canon PowerShot SD700 IS vs. Canon PowerShot ELPH 180
- Canon PowerShot SD700 IS vs. Sony Cyber-shot DSC-RX100
- Canon PowerShot SD700 IS vs. Canon IXY 640
- Canon PowerShot SD700 IS vs. Canon EOS 1300D
Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
Diagonal = √ | w² + h² |
Canon SD700 IS diagonal
The diagonal of SD700 IS 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 |
Canon IXY 640 diagonal
The diagonal of IXY 640 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
w = 6.16 mm
h = 4.62 mm
Diagonal = √ | 6.16² + 4.62² | = 7.70 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
SD700 IS 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
IXY 640 sensor area
Width = 6.16 mm
Height = 4.62 mm
Surface area = 6.16 × 4.62 = 28.46 mm²
Height = 4.62 mm
Surface area = 6.16 × 4.62 = 28.46 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 |
SD700 IS pixel pitch
Sensor width = 5.75 mm
Sensor resolution width = 2825 pixels
Sensor resolution width = 2825 pixels
Pixel pitch = | 5.75 | × 1000 | = 2.04 µm |
2825 |
IXY 640 pixel pitch
Sensor width = 6.16 mm
Sensor resolution width = 5183 pixels
Sensor resolution width = 5183 pixels
Pixel pitch = | 6.16 | × 1000 | = 1.19 µm |
5183 |
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 |
SD700 IS pixel area
Pixel pitch = 2.04 µm
Pixel area = 2.04² = 4.16 µm²
Pixel area = 2.04² = 4.16 µm²
IXY 640 pixel area
Pixel pitch = 1.19 µm
Pixel area = 1.19² = 1.42 µm²
Pixel area = 1.19² = 1.42 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 |
SD700 IS pixel density
Sensor resolution width = 2825 pixels
Sensor width = 0.575 cm
Pixel density = (2825 / 0.575)² / 1000000 = 24.14 MP/cm²
Sensor width = 0.575 cm
Pixel density = (2825 / 0.575)² / 1000000 = 24.14 MP/cm²
IXY 640 pixel density
Sensor resolution width = 5183 pixels
Sensor width = 0.616 cm
Pixel density = (5183 / 0.616)² / 1000000 = 70.79 MP/cm²
Sensor width = 0.616 cm
Pixel density = (5183 / 0.616)² / 1000000 = 70.79 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:
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
SD700 IS sensor resolution
Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 6.00
Resolution horizontal: X × r = 2124 × 1.33 = 2825
Resolution vertical: X = 2124
Sensor resolution = 2825 x 2124
Sensor height = 4.32 mm
Effective megapixels = 6.00
r = 5.75/4.32 = 1.33 |
|
Resolution vertical: X = 2124
Sensor resolution = 2825 x 2124
IXY 640 sensor resolution
Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 20.20
Resolution horizontal: X × r = 3897 × 1.33 = 5183
Resolution vertical: X = 3897
Sensor resolution = 5183 x 3897
Sensor height = 4.62 mm
Effective megapixels = 20.20
r = 6.16/4.62 = 1.33 |
|
Resolution vertical: X = 3897
Sensor resolution = 5183 x 3897
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 |
SD700 IS crop factor
Sensor diagonal in mm = 7.19 mm
Crop factor = | 43.27 | = 6.02 |
7.19 |
IXY 640 crop factor
Sensor diagonal in mm = 7.70 mm
Crop factor = | 43.27 | = 5.62 |
7.70 |
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).
SD700 IS equivalent aperture
Crop factor = 6.02
Aperture = f2.8 - f5.5
35-mm equivalent aperture = (f2.8 - f5.5) × 6.02 = f16.9 - f33.1
Aperture = f2.8 - f5.5
35-mm equivalent aperture = (f2.8 - f5.5) × 6.02 = f16.9 - f33.1
IXY 640 equivalent aperture
Crop factor = 5.62
Aperture = f3.6 - f7.0
35-mm equivalent aperture = (f3.6 - f7.0) × 5.62 = f20.2 - f39.3
Aperture = f3.6 - f7.0
35-mm equivalent aperture = (f3.6 - f7.0) × 5.62 = f20.2 - f39.3
Enter your screen size (diagonal)
My screen size is
inches
Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.