Kodak EasyShare M580 vs. Canon PowerShot SD750

Comparison

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Kodak EasyShare M580

Canon PowerShot SD750

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Megapixels

14.00

7.10

Max. image resolution

4288 x 3216

3072 x 2304

Sensor

Sensor type

CCD

Sensor size

1/2.3" (~ 6.16 x 4.62 mm)

1/2.5" (~ 5.75 x 4.32 mm)

Sensor resolution

4315 x 3244

3072 x 2310

Diagonal

7.70 mm

7.19 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
1.15	:	1
(ratio)

Kodak EasyShare M580		Canon PowerShot SD750

Surface area:

28.46 mm²

24.84 mm²

Difference: 3.62 mm² (15%)

M580 sensor is approx. 1.15x bigger than SD750 sensor.

Note: You are comparing cameras of different generations. There is a 2 year gap between Kodak M580 (2009) and Canon SD750 (2007). All things being equal, newer sensor generations generally outperform the older.

Pixel pitch

1.43 µm

1.87 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: 0.44 µm (31%)

Pixel pitch of SD750 is approx. 31% higher than pixel pitch of M580.

Pixel area

2.04 µm²

3.5 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:

Pixel area difference: 1.46 µm² (72%)

A pixel on Canon SD750 sensor is approx. 72% bigger than a pixel on Kodak M580.

Pixel density

49.07 MP/cm²

28.54 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: 20.53 µm (72%)

Kodak M580 has approx. 72% higher pixel density than Canon SD750.

To learn about the accuracy of these numbers, click here.

Specs

Kodak M580

Canon SD750

Crop factor

5.62

6.02

Total megapixels

14.50

7.40

Effective megapixels

14.00

7.10

Optical zoom

Digital zoom

Yes

ISO sensitivity

Auto, 100 - 1600

Auto, 80 ,100, 200, 400, 800, 1600

RAW

Manual focus

Normal focus range

60 cm

45 cm

Macro focus range

10 cm

5 cm

Focal length (35mm equiv.)

28 - 224 mm

35 - 105 mm

Aperture priority

Max. aperture

f3.0 - f4.8

f2.8 - f4.9

Max. aperture (35mm equiv.)

f16.9 - f27

f16.9 - f29.5

Metering

Multi, Center-weighted, Spot

Exposure compensation

±2 EV (in 1/3 EV steps)

Shutter priority

Min. shutter speed

8 sec

15 sec

Max. shutter speed

1/1400 sec

1/1500 sec

Built-in flash

External flash

Viewfinder

None

White balance presets

Screen size

Screen resolution

230,000 dots

Video capture

Max. video resolution

Storage types

SDHC, Secure Digital

SD/SDHC card

USB

USB 2.0 (480 Mbit/sec)

HDMI

Wireless

GPS

Battery

Lithium-Ion KLIC-7006 rechargeable battery

Lithium-Ion NB-4L battery

Weight

150 g

170 g

Dimensions

101 x 59 x 56 mm

92 x 57 x 20 mm

Year

2009

2007

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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

Kodak M580 diagonal

The diagonal of M580 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

Canon SD750 diagonal

The diagonal of SD750 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

Surface area

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

M580 sensor area

Width = 6.16 mm
Height = 4.62 mm

Surface area = 6.16 × 4.62 = 28.46 mm²

SD750 sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 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

M580 pixel pitch

Sensor width = 6.16 mm
Sensor resolution width = 4315 pixels

Pixel pitch =	6.16	× 1000	= 1.43 µm
	4315

SD750 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 3072 pixels

Pixel pitch =	5.75	× 1000	= 1.87 µm
	3072

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

M580 pixel area

Pixel pitch = 1.43 µm

Pixel area = 1.43² = 2.04 µm²

SD750 pixel area

Pixel pitch = 1.87 µm

Pixel area = 1.87² = 3.5 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

M580 pixel density

Sensor resolution width = 4315 pixels
Sensor width = 0.616 cm

Pixel density = (4315 / 0.616)² / 1000000 = 49.07 MP/cm²

SD750 pixel density

Sensor resolution width = 3072 pixels
Sensor width = 0.575 cm

Pixel density = (3072 / 0.575)² / 1000000 = 28.54 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

M580 sensor resolution

Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 14.00

r = 6.16/4.62 = 1.33

X = √	14.00 × 1000000	= 3244
	1.33

Resolution horizontal: X × r = 3244 × 1.33 = 4315
Resolution vertical: X = 3244

Sensor resolution = 4315 x 3244

SD750 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 7.10

r = 5.75/4.32 = 1.33

X = √	7.10 × 1000000	= 2310
	1.33

Resolution horizontal: X × r = 2310 × 1.33 = 3072
Resolution vertical: X = 2310

Sensor resolution = 3072 x 2310

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

M580 crop factor

Sensor diagonal in mm = 7.70 mm

Crop factor =	43.27	= 5.62
	7.70

SD750 crop factor

Sensor diagonal in mm = 7.19 mm

Crop factor =	43.27	= 6.02
	7.19

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).

M580 equivalent aperture

Crop factor = 5.62
Aperture = f3.0 - f4.8

35-mm equivalent aperture = (f3.0 - f4.8) × 5.62 = f16.9 - f27

SD750 equivalent aperture

Crop factor = 6.02
Aperture = f2.8 - f4.9

35-mm equivalent aperture = (f2.8 - f4.9) × 6.02 = f16.9 - f29.5

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