Canon PowerShot A530 vs. Canon PowerShot Pro90 IS

Comparison

change cameras »
PowerShot A530 image
vs
PowerShot Pro90 IS image
Canon PowerShot A530 Canon PowerShot Pro90 IS
check price » check price »
Megapixels
5.00
2.58
Max. image resolution
2592 x 1944
1856 x 1392

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
2579 x 1939
1853 x 1393
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)
Canon PowerShot A530 Canon PowerShot Pro90 IS
Surface area:
24.84 mm² vs 37.90 mm²
Difference: 13.06 mm² (53%)
Pro90 IS sensor is approx. 1.53x bigger than A530 sensor.
Note: You are comparing cameras of different generations. There is a 5 year gap between Canon A530 (2006) and Canon Pro90 IS (2001). All things being equal, newer sensor generations generally outperform the older.
Pixel pitch
2.23 µm
3.84 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: 1.61 µm (72%)
Pixel pitch of Pro90 IS is approx. 72% higher than pixel pitch of A530.
Pixel area
4.97 µm²
14.75 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: 9.78 µm² (197%)
A pixel on Canon Pro90 IS sensor is approx. 197% bigger than a pixel on Canon A530.
Pixel density
20.12 MP/cm²
6.79 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: 13.33 µm (196%)
Canon A530 has approx. 196% higher pixel density than Canon Pro90 IS.
To learn about the accuracy of these numbers, click here.

Specs

Canon A530
Canon Pro90 IS
Crop factor
6.02
4.87
Total megapixels
5.30
3.34
Effective megapixels
5.00
2.58
Optical zoom
4x
10x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 80 ,100, 200, 400, 800
Auto, 50, 100, 200, 400
RAW
Manual focus
Normal focus range
45 cm
10 cm
Macro focus range
5 cm
10 cm
Focal length (35mm equiv.)
35 - 140 mm
37 - 370 mm
Aperture priority
No
Yes
Max. aperture
f2.6 - f5.5
f2.8 - f3.5
Max. aperture (35mm equiv.)
f15.7 - f33.1
f13.6 - f17
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
15 sec
8 sec
Max. shutter speed
1/2000 sec
1/1000 sec
Built-in flash
External flash
Viewfinder
Optical (tunnel)
Electronic
White balance presets
5
6
Screen size
1.8"
1.8"
Screen resolution
77,000 dots
120,000 dots
Video capture
Max. video resolution
Storage types
SD/MMC card
Compact Flash (Type I or II)
USB
USB 2.0 (480 Mbit/sec)
USB 1.0
HDMI
Wireless
GPS
Battery
AA (2) batteries (NiMH recommended)
Canon Lithium-Ion
Weight
220 g
680 g
Dimensions
90 x 64 x 43 mm
127 x 84 x 140 mm
Year
2006
2001



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

Canon A530 diagonal

The diagonal of A530 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 Pro90 IS diagonal

The diagonal of Pro90 IS 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.

A530 sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 mm²

Pro90 IS 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

A530 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2579 pixels
Pixel pitch =   5.75  × 1000  = 2.23 µm
2579

Pro90 IS pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 1853 pixels
Pixel pitch =   7.11  × 1000  = 3.84 µm
1853


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

A530 pixel area

Pixel pitch = 2.23 µm

Pixel area = 2.23² = 4.97 µm²

Pro90 IS pixel area

Pixel pitch = 3.84 µm

Pixel area = 3.84² = 14.75 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

A530 pixel density

Sensor resolution width = 2579 pixels
Sensor width = 0.575 cm

Pixel density = (2579 / 0.575)² / 1000000 = 20.12 MP/cm²

Pro90 IS pixel density

Sensor resolution width = 1853 pixels
Sensor width = 0.711 cm

Pixel density = (1853 / 0.711)² / 1000000 = 6.79 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

A530 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 5.00
r = 5.75/4.32 = 1.33
X =  5.00 × 1000000  = 1939
1.33
Resolution horizontal: X × r = 1939 × 1.33 = 2579
Resolution vertical: X = 1939

Sensor resolution = 2579 x 1939

Pro90 IS sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 2.58
r = 7.11/5.33 = 1.33
X =  2.58 × 1000000  = 1393
1.33
Resolution horizontal: X × r = 1393 × 1.33 = 1853
Resolution vertical: X = 1393

Sensor resolution = 1853 x 1393


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


A530 crop factor

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

Pro90 IS 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).

A530 equivalent aperture

Crop factor = 6.02
Aperture = f2.6 - f5.5

35-mm equivalent aperture = (f2.6 - f5.5) × 6.02 = f15.7 - f33.1

Pro90 IS equivalent aperture

Crop factor = 4.87
Aperture = f2.8 - f3.5

35-mm equivalent aperture = (f2.8 - f3.5) × 4.87 = f13.6 - f17

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.