Rollei da1325 Prego vs. Fujifilm FinePix S602 Zoom

Comparison

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Rollei da1325 Prego

Fujifilm FinePix S602 Zoom

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Megapixels

10.00

3.10

Max. image resolution

3072 x 2304

2832 x 2128

Sensor

Sensor type

CCD

Sensor size

1/2.5" (~ 5.75 x 4.32 mm)

1/1.7" (~ 7.53 x 5.64 mm)

Sensor resolution

3647 x 2742

2038 x 1521

Diagonal

7.19 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	:	1.71
(ratio)

Rollei da1325 Prego		Fujifilm FinePix S602 Zoom

Surface area:

24.84 mm²

42.47 mm²

Difference: 17.63 mm² (71%)

S602 Zoom sensor is approx. 1.71x bigger than da1325 Prego sensor.

Note: You are comparing cameras of different generations. There is a 4 year gap between Rollei da1325 Prego (2006) and Fujifilm S602 Zoom (2002). All things being equal, newer sensor generations generally outperform the older.

Pixel pitch

1.58 µm

3.69 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: 2.11 µm (134%)

Pixel pitch of S602 Zoom is approx. 134% higher than pixel pitch of da1325 Prego.

Pixel area

2.5 µm²

13.62 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: 11.12 µm² (445%)

A pixel on Fujifilm S602 Zoom sensor is approx. 445% bigger than a pixel on Rollei da1325 Prego.

Pixel density

40.23 MP/cm²

7.33 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: 32.9 µm (449%)

Rollei da1325 Prego has approx. 449% higher pixel density than Fujifilm S602 Zoom.

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

Specs

Rollei da1325 Prego

Fujifilm S602 Zoom

Crop factor

6.02

4.6

Total megapixels

3.30

Effective megapixels

3.10

Optical zoom

Yes

Digital zoom

Yes

ISO sensitivity

Auto, 50, 100, 200, 400

160, 200, 400 (higher at 1280 x 960)

RAW

Manual focus

Normal focus range

80 cm

50 cm

Macro focus range

5 cm

1 cm

Focal length (35mm equiv.)

37 - 112 mm

35 - 210 mm

Aperture priority

Yes

Max. aperture

f2.8 - f5.2

f2.8 - f3.1

Max. aperture (35mm equiv.)

f16.9 - f31.3

f12.9 - f14.3

Metering

Centre weighted, Spot

Multi, Average, Spot

Exposure compensation

±2 EV (in 1/3 EV steps)

Shutter priority

Yes

Min. shutter speed

8 sec

3 sec

Max. shutter speed

1/2000 sec

Built-in flash

External flash

Viewfinder

None

Electronic

White balance presets

Screen size

2.5"

1.8"

Screen resolution

110,000 dots

Video capture

Max. video resolution

Storage types

Secure Digital

SmartMedia, Compact Flash Type I or II

USB

USB 2.0 (480 Mbit/sec)

USB 1.0

HDMI

Wireless

GPS

Battery

2x AA

AA NiMH (4) batteries included

Weight

128 g

590 g

Dimensions

89.5 x 61.3 x 27 mm

121 x 82 x 97 mm

Year

2006

2002

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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

Rollei da1325 Prego diagonal

The diagonal of da1325 Prego 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

Fujifilm S602 Zoom diagonal

The diagonal of S602 Zoom 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.

da1325 Prego sensor area

Width = 5.75 mm
Height = 4.32 mm

Surface area = 5.75 × 4.32 = 24.84 mm²

S602 Zoom 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

da1325 Prego pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 3647 pixels

Pixel pitch =	5.75	× 1000	= 1.58 µm
	3647

S602 Zoom pixel pitch

Sensor width = 7.53 mm
Sensor resolution width = 2038 pixels

Pixel pitch =	7.53	× 1000	= 3.69 µm
	2038

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

da1325 Prego pixel area

Pixel pitch = 1.58 µm

Pixel area = 1.58² = 2.5 µm²

S602 Zoom pixel area

Pixel pitch = 3.69 µm

Pixel area = 3.69² = 13.62 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

da1325 Prego pixel density

Sensor resolution width = 3647 pixels
Sensor width = 0.575 cm

Pixel density = (3647 / 0.575)² / 1000000 = 40.23 MP/cm²

S602 Zoom pixel density

Sensor resolution width = 2038 pixels
Sensor width = 0.753 cm

Pixel density = (2038 / 0.753)² / 1000000 = 7.33 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

da1325 Prego sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 10.00

r = 5.75/4.32 = 1.33

X = √	10.00 × 1000000	= 2742
	1.33

Resolution horizontal: X × r = 2742 × 1.33 = 3647
Resolution vertical: X = 2742

Sensor resolution = 3647 x 2742

S602 Zoom sensor resolution

Sensor width = 7.53 mm
Sensor height = 5.64 mm
Effective megapixels = 3.10

r = 7.53/5.64 = 1.34

X = √	3.10 × 1000000	= 1521
	1.34

Resolution horizontal: X × r = 1521 × 1.34 = 2038
Resolution vertical: X = 1521

Sensor resolution = 2038 x 1521

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

da1325 Prego crop factor

Sensor diagonal in mm = 7.19 mm

Crop factor =	43.27	= 6.02
	7.19

S602 Zoom 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).

da1325 Prego equivalent aperture

Crop factor = 6.02
Aperture = f2.8 - f5.2

35-mm equivalent aperture = (f2.8 - f5.2) × 6.02 = f16.9 - f31.3

S602 Zoom equivalent aperture

Crop factor = 4.6
Aperture = f2.8 - f3.1

35-mm equivalent aperture = (f2.8 - f3.1) × 4.6 = f12.9 - f14.3

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