Kodak DC200 vs. Kodak EasyShare DX7440

Comparison

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Kodak DC200

Kodak EasyShare DX7440

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Megapixels

0.90

4.00

Max. image resolution

1152 x 864

2304 x 1728

Sensor

Sensor type

CCD

Sensor size

1/1.76" (~ 7.27 x 5.46 mm)

1/2.5" (~ 5.75 x 4.32 mm)

Sensor resolution

1095 x 823

2306 x 1734

Diagonal

9.09 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

Note: Actual size is set to screen → change »

	vs
1.6	:	1
(ratio)

Kodak DC200		Kodak EasyShare DX7440

Surface area:

39.69 mm²

24.84 mm²

Difference: 14.85 mm² (60%)

DC200 sensor is approx. 1.6x bigger than DX7440 sensor.

Note: You are comparing sensors of very different generations. There is a gap of 6 years between Kodak DC200 (1998) and Kodak DX7440 (2004). Six years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.

Pixel pitch

6.64 µm

2.49 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: 4.15 µm (167%)

Pixel pitch of DC200 is approx. 167% higher than pixel pitch of DX7440.

Pixel area

44.09 µm²

6.2 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: 37.89 µm² (611%)

A pixel on Kodak DC200 sensor is approx. 611% bigger than a pixel on Kodak DX7440.

Pixel density

2.27 MP/cm²

16.08 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: 13.81 µm (608%)

Kodak DX7440 has approx. 608% higher pixel density than Kodak DC200.

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

Specs

Kodak DC200

Kodak DX7440

Crop factor

4.76

6.02

Total megapixels

1.00

4.20

Effective megapixels

0.90

4.00

Optical zoom

Digital zoom

Yes

ISO sensitivity

140

Auto, 80, 100, 200, 400, 800

RAW

Manual focus

Normal focus range

70 cm

50 cm

Macro focus range

20 cm

10 cm

Focal length (35mm equiv.)

39 mm

33 - 132 mm

Aperture priority

Yes

Max. aperture

f4.0 - f4.8

f2.8 - f4.8

Max. aperture (35mm equiv.)

f19 - f22.8

f16.9 - f28.9

Metering

Multi, Center-weighted, 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

64 sec

Max. shutter speed

1/362 sec

1/2000 sec

Built-in flash

External flash

Viewfinder

Optical (tunnel)

White balance presets

Screen size

1.8"

2.2"

Screen resolution

72,000 dots

153,000 dots

Video capture

Max. video resolution

Storage types

Compact Flash

SD/MMC card, Internal

USB

USB 1.0

HDMI

Wireless

GPS

Battery

AA (4) batteries (NiMH recommended)

Kodak Lithium-Ion, dock (optional)

Weight

400 g

270 g

Dimensions

131 x 47 x 81 mm

100 x 69 x 40 mm

Year

1998

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 DC200 diagonal

The diagonal of DC200 sensor is not 1/1.76 or 0.57" (14.4 mm) as you might expect, but approximately two thirds of that value - 9.09 mm. If you want to know why, see sensor sizes.

w = 7.27 mm
h = 5.46 mm

Diagonal = √

7.27² + 5.46²

= 9.09 mm

Kodak DX7440 diagonal

The diagonal of DX7440 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.

DC200 sensor area

Width = 7.27 mm
Height = 5.46 mm

Surface area = 7.27 × 5.46 = 39.69 mm²

DX7440 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

DC200 pixel pitch

Sensor width = 7.27 mm
Sensor resolution width = 1095 pixels

Pixel pitch =	7.27	× 1000	= 6.64 µm
	1095

DX7440 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2306 pixels

Pixel pitch =	5.75	× 1000	= 2.49 µm
	2306

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

DC200 pixel area

Pixel pitch = 6.64 µm

Pixel area = 6.64² = 44.09 µm²

DX7440 pixel area

Pixel pitch = 2.49 µm

Pixel area = 2.49² = 6.2 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

DC200 pixel density

Sensor resolution width = 1095 pixels
Sensor width = 0.727 cm

Pixel density = (1095 / 0.727)² / 1000000 = 2.27 MP/cm²

DX7440 pixel density

Sensor resolution width = 2306 pixels
Sensor width = 0.575 cm

Pixel density = (2306 / 0.575)² / 1000000 = 16.08 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

DC200 sensor resolution

Sensor width = 7.27 mm
Sensor height = 5.46 mm
Effective megapixels = 0.90

r = 7.27/5.46 = 1.33

X = √	0.90 × 1000000	= 823
	1.33

Resolution horizontal: X × r = 823 × 1.33 = 1095
Resolution vertical: X = 823

Sensor resolution = 1095 x 823

DX7440 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 4.00

r = 5.75/4.32 = 1.33

X = √	4.00 × 1000000	= 1734
	1.33

Resolution horizontal: X × r = 1734 × 1.33 = 2306
Resolution vertical: X = 1734

Sensor resolution = 2306 x 1734

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

DC200 crop factor

Sensor diagonal in mm = 9.09 mm

Crop factor =	43.27	= 4.76
	9.09

DX7440 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).

DC200 equivalent aperture

Crop factor = 4.76
Aperture = f4.0 - f4.8

35-mm equivalent aperture = (f4.0 - f4.8) × 4.76 = f19 - f22.8

DX7440 equivalent aperture

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

35-mm equivalent aperture = (f2.8 - f4.8) × 6.02 = f16.9 - f28.9

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