Kodak EasyShare CX7300 vs. Yakumo Mega Image 67x

Comparison

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Kodak EasyShare CX7300

Yakumo Mega Image 67x

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Megapixels

3.20

5.36

Max. image resolution

2088 x 1544

2816 x 2112

Sensor

Sensor type

CCD

Sensor size

1/2.7" (~ 5.33 x 4 mm)

1/1.8" (~ 7.11 x 5.33 mm)

Sensor resolution

2063 x 1551

2671 x 2008

Diagonal

6.66 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	:	1.78
(ratio)

Kodak EasyShare CX7300		Yakumo Mega Image 67x

Surface area:

21.32 mm²

37.90 mm²

Difference: 16.58 mm² (78%)

67x sensor is approx. 1.78x bigger than CX7300 sensor.

Pixel pitch

2.58 µm

2.66 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: 0.08 µm (3%)

Pixel pitch of 67x is approx. 3% higher than pixel pitch of CX7300.

Pixel area

6.66 µm²

7.08 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: 0.42 µm² (6%)

A pixel on Yakumo 67x sensor is approx. 6% bigger than a pixel on Kodak CX7300.

Pixel density

14.98 MP/cm²

14.11 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: 0.87 µm (6%)

Kodak CX7300 has approx. 6% higher pixel density than Yakumo 67x.

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

Specs

Kodak CX7300

Yakumo 67x

Crop factor

6.5

4.87

Total megapixels

3.20

Effective megapixels

3.20

Optical zoom

Yes

Digital zoom

Yes

ISO sensitivity

Auto, 100, 200, 140, 800

Auto, 100, 200, 400

RAW

Manual focus

Normal focus range

80 cm

40 cm

Macro focus range

60 cm

10 cm

Focal length (35mm equiv.)

37 mm

37 - 111 mm

Aperture priority

Yes

Max. aperture

f4.5

f2.7 - f4.9

Max. aperture (35mm equiv.)

f29.3

f13.1 - f23.9

Metering

Centre weighted, Matrix

Centre weighted, Matrix, Spot

Exposure compensation

±2 EV (in 1/2 EV steps)

±2 EV (in 1/3 EV steps)

Shutter priority

Yes

Min. shutter speed

1/2 sec

8 sec

Max. shutter speed

1/2300 sec

1/2000 sec

Built-in flash

External flash

Viewfinder

Optical (tunnel)

Optical

White balance presets

Screen size

1.6"

1.5"

Screen resolution

61,000 dots

Video capture

Max. video resolution

Storage types

MultiMedia, Secure Digital

Secure Digital

USB

USB 1.0

USB 1.1

HDMI

Wireless

GPS

Battery

AA (2) batteries (NiMH recommended)

2x AA

Weight

147 g

175 g

Dimensions

103.5 x 65 x 40.2 mm

101 x 56 x 38.9 mm

Year

2004

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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 CX7300 diagonal

The diagonal of CX7300 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

Diagonal = √

5.33² + 4.00²

= 6.66 mm

Yakumo 67x diagonal

The diagonal of 67x 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.

CX7300 sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 mm²

67x 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

CX7300 pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 2063 pixels

Pixel pitch =	5.33	× 1000	= 2.58 µm
	2063

67x pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2671 pixels

Pixel pitch =	7.11	× 1000	= 2.66 µm
	2671

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

CX7300 pixel area

Pixel pitch = 2.58 µm

Pixel area = 2.58² = 6.66 µm²

67x pixel area

Pixel pitch = 2.66 µm

Pixel area = 2.66² = 7.08 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

CX7300 pixel density

Sensor resolution width = 2063 pixels
Sensor width = 0.533 cm

Pixel density = (2063 / 0.533)² / 1000000 = 14.98 MP/cm²

67x pixel density

Sensor resolution width = 2671 pixels
Sensor width = 0.711 cm

Pixel density = (2671 / 0.711)² / 1000000 = 14.11 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

CX7300 sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 3.20

r = 5.33/4.00 = 1.33

X = √	3.20 × 1000000	= 1551
	1.33

Resolution horizontal: X × r = 1551 × 1.33 = 2063
Resolution vertical: X = 1551

Sensor resolution = 2063 x 1551

67x sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 5.36

r = 7.11/5.33 = 1.33

X = √	5.36 × 1000000	= 2008
	1.33

Resolution horizontal: X × r = 2008 × 1.33 = 2671
Resolution vertical: X = 2008

Sensor resolution = 2671 x 2008

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

CX7300 crop factor

Sensor diagonal in mm = 6.66 mm

Crop factor =	43.27	= 6.5
	6.66

67x 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).

CX7300 equivalent aperture

Crop factor = 6.5
Aperture = f4.5

35-mm equivalent aperture = (f4.5) × 6.5 = f29.3

67x equivalent aperture

Crop factor = 4.87
Aperture = f2.7 - f4.9

35-mm equivalent aperture = (f2.7 - f4.9) × 4.87 = f13.1 - f23.9

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