Kodak EasyShare Z760 vs. Casio Exilim EX-Z1200 SR

Comparison

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Kodak EasyShare Z760

Casio Exilim EX-Z1200 SR

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Megapixels

6.10

12.00

Max. image resolution

2872 x 2160

4000 x 3000

Sensor

Sensor type

CCD

Sensor size

1/1.8" (~ 7.11 x 5.33 mm)

1/1.7" (~ 7.53 x 5.64 mm)

Sensor resolution

2849 x 2142

4011 x 2993

Diagonal

8.89 mm

9.41 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	:	1.12
(ratio)

Kodak EasyShare Z760		Casio Exilim EX-Z1200 SR

Surface area:

37.90 mm²

42.47 mm²

Difference: 4.57 mm² (12%)

Z1200 SR sensor is approx. 1.12x bigger than Z760 sensor.

Note: You are comparing cameras of different generations. There is a 2 year gap between Kodak Z760 (2005) and Casio Z1200 SR (2007). All things being equal, newer sensor generations generally outperform the older.

Pixel pitch

2.5 µm

1.88 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: 0.62 µm (33%)

Pixel pitch of Z760 is approx. 33% higher than pixel pitch of Z1200 SR.

Pixel area

6.25 µm²

3.53 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: 2.72 µm² (77%)

A pixel on Kodak Z760 sensor is approx. 77% bigger than a pixel on Casio Z1200 SR.

Pixel density

16.06 MP/cm²

28.37 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: 12.31 µm (77%)

Casio Z1200 SR has approx. 77% higher pixel density than Kodak Z760.

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

Specs

Kodak Z760

Casio Z1200 SR

Crop factor

4.87

4.6

Total megapixels

6.20

12.40

Effective megapixels

6.10

12.00

Optical zoom

Digital zoom

Yes

ISO sensitivity

Auto, 80, 100, 200, 400, 800

Auto, 50, 100, 200, 400, (up to 1600 with limitations)

RAW

Manual focus

Normal focus range

60 cm

40 cm

Macro focus range

7 cm

6 cm

Focal length (35mm equiv.)

39 - 117 mm

37 - 111 mm

Aperture priority

Yes

Max. aperture

f2.8 - f4.8

f2.8 - f5.4

Max. aperture (35mm equiv.)

f13.6 - f23.4

f12.9 - f24.8

Metering

Multi, Center-weighted, Spot

Exposure compensation

±2 EV (in 1/3 EV steps)

Shutter priority

Yes

Min. shutter speed

64 sec

30 sec

Max. shutter speed

1/1000 sec

1/2000 sec

Built-in flash

External flash

Viewfinder

Optical (tunnel)

None

White balance presets

Screen size

2.2"

2.8"

Screen resolution

153,000 dots

230,400 dots

Video capture

Max. video resolution

Storage types

SD/MMC card, Internal

SD/MMC/SDHC card, Internal

USB

USB 1.0

USB 2.0 (480 Mbit/sec)

HDMI

Wireless

GPS

Battery

Kodak Lithium-Ion

Lithium-Ion rechargeable

Weight

259 g

162 g

Dimensions

100 x 69 x 40 mm

93 x 58 x 22 mm

Year

2005

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 Z760 diagonal

The diagonal of Z760 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

Casio Z1200 SR diagonal

The diagonal of Z1200 SR sensor is not 1/1.7 or 0.59" (14.9 mm) as you might expect, but approximately two thirds of that value - 9.41 mm. If you want to know why, see sensor sizes.

w = 7.53 mm
h = 5.64 mm

Diagonal = √

7.53² + 5.64²

= 9.41 mm

Surface area

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

Z760 sensor area

Width = 7.11 mm
Height = 5.33 mm

Surface area = 7.11 × 5.33 = 37.90 mm²

Z1200 SR sensor area

Width = 7.53 mm
Height = 5.64 mm

Surface area = 7.53 × 5.64 = 42.47 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

Z760 pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2849 pixels

Pixel pitch =	7.11	× 1000	= 2.5 µm
	2849

Z1200 SR pixel pitch

Sensor width = 7.53 mm
Sensor resolution width = 4011 pixels

Pixel pitch =	7.53	× 1000	= 1.88 µm
	4011

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

Z760 pixel area

Pixel pitch = 2.5 µm

Pixel area = 2.5² = 6.25 µm²

Z1200 SR pixel area

Pixel pitch = 1.88 µm

Pixel area = 1.88² = 3.53 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

Z760 pixel density

Sensor resolution width = 2849 pixels
Sensor width = 0.711 cm

Pixel density = (2849 / 0.711)² / 1000000 = 16.06 MP/cm²

Z1200 SR pixel density

Sensor resolution width = 4011 pixels
Sensor width = 0.753 cm

Pixel density = (4011 / 0.753)² / 1000000 = 28.37 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

Z760 sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 6.10

r = 7.11/5.33 = 1.33

X = √	6.10 × 1000000	= 2142
	1.33

Resolution horizontal: X × r = 2142 × 1.33 = 2849
Resolution vertical: X = 2142

Sensor resolution = 2849 x 2142

Z1200 SR sensor resolution

Sensor width = 7.53 mm
Sensor height = 5.64 mm
Effective megapixels = 12.00

r = 7.53/5.64 = 1.34

X = √	12.00 × 1000000	= 2993
	1.34

Resolution horizontal: X × r = 2993 × 1.34 = 4011
Resolution vertical: X = 2993

Sensor resolution = 4011 x 2993

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

Z760 crop factor

Sensor diagonal in mm = 8.89 mm

Crop factor =	43.27	= 4.87
	8.89

Z1200 SR crop factor

Sensor diagonal in mm = 9.41 mm

Crop factor =	43.27	= 4.6
	9.41

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).

Z760 equivalent aperture

Crop factor = 4.87
Aperture = f2.8 - f4.8

35-mm equivalent aperture = (f2.8 - f4.8) × 4.87 = f13.6 - f23.4

Z1200 SR equivalent aperture

Crop factor = 4.6
Aperture = f2.8 - f5.4

35-mm equivalent aperture = (f2.8 - f5.4) × 4.6 = f12.9 - f24.8

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