Ricoh Caplio RR230 vs. Ricoh Caplio RR30

Comparison

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Ricoh Caplio RR230

Ricoh Caplio RR30

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Megapixels

2.11

3.24

Max. image resolution

1600 x 1200

2048 x 1536

Sensor

Sensor type

CCD

Sensor size

1/3.2" (~ 4.5 x 3.37 mm)

1/2.7" (~ 5.33 x 4 mm)

Sensor resolution

1682 x 1255

2076 x 1561

Diagonal

5.62 mm

6.66 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	:	1.41
(ratio)

Ricoh Caplio RR230		Ricoh Caplio RR30

Surface area:

15.17 mm²

21.32 mm²

Difference: 6.15 mm² (41%)

RR30 sensor is approx. 1.41x bigger than RR230 sensor.

Pixel pitch

2.68 µm

2.57 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: 0.11 µm (4%)

Pixel pitch of RR230 is approx. 4% higher than pixel pitch of RR30.

Pixel area

7.18 µm²

6.6 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: 0.58 µm² (9%)

A pixel on Ricoh RR230 sensor is approx. 9% bigger than a pixel on Ricoh RR30.

Pixel density

13.97 MP/cm²

15.17 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: 1.2 µm (9%)

Ricoh RR30 has approx. 9% higher pixel density than Ricoh RR230.

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

Specs

Ricoh RR230

Ricoh RR30

Crop factor

7.7

6.5

Total megapixels

Effective megapixels

Optical zoom

Yes

Digital zoom

Yes

ISO sensitivity

Auto, 100, 200, 400

Auto, 125, 200, 400, 800

RAW

Manual focus

Normal focus range

10 cm

30 cm

Macro focus range

10 cm

1 cm

Focal length (35mm equiv.)

33 - 98 mm

35 - 105 mm

Aperture priority

Max. aperture

f2.8 - f4.8

f2.6 - f4.7

Max. aperture (35mm equiv.)

f21.6 - f37

f16.9 - f30.6

Metering

Centre weighted

256-segment Matrix, Centre weighted, Spot

Exposure compensation

±1.8 EV (in 1/3 EV steps)

±2 EV (in 1/3 EV steps)

Shutter priority

Min. shutter speed

1/10 sec

8 sec

Max. shutter speed

1/1000 sec

1/2000 sec

Built-in flash

External flash

Viewfinder

Optical

White balance presets

Screen size

1.6"

Screen resolution

60,000 dots

80,000 dots

Video capture

Max. video resolution

Storage types

MultiMedia, Secure Digital

USB

USB 1.1

HDMI

Wireless

GPS

Battery

1x CR-V3, 2x AA

2x AA

Weight

220 g

200 g

Dimensions

105 x 42 x 63 mm

114 x 33 x 55 mm

Year

2003

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

Ricoh RR230 diagonal

The diagonal of RR230 sensor is not 1/3.2 or 0.31" (7.9 mm) as you might expect, but approximately two thirds of that value - 5.62 mm. If you want to know why, see sensor sizes.

w = 4.50 mm
h = 3.37 mm

Diagonal = √

4.50² + 3.37²

= 5.62 mm

Ricoh RR30 diagonal

The diagonal of RR30 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

Surface area

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

RR230 sensor area

Width = 4.50 mm
Height = 3.37 mm

Surface area = 4.50 × 3.37 = 15.17 mm²

RR30 sensor area

Width = 5.33 mm
Height = 4.00 mm

Surface area = 5.33 × 4.00 = 21.32 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

RR230 pixel pitch

Sensor width = 4.50 mm
Sensor resolution width = 1682 pixels

Pixel pitch =	4.50	× 1000	= 2.68 µm
	1682

RR30 pixel pitch

Sensor width = 5.33 mm
Sensor resolution width = 2076 pixels

Pixel pitch =	5.33	× 1000	= 2.57 µm
	2076

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

RR230 pixel area

Pixel pitch = 2.68 µm

Pixel area = 2.68² = 7.18 µm²

RR30 pixel area

Pixel pitch = 2.57 µm

Pixel area = 2.57² = 6.6 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

RR230 pixel density

Sensor resolution width = 1682 pixels
Sensor width = 0.45 cm

Pixel density = (1682 / 0.45)² / 1000000 = 13.97 MP/cm²

RR30 pixel density

Sensor resolution width = 2076 pixels
Sensor width = 0.533 cm

Pixel density = (2076 / 0.533)² / 1000000 = 15.17 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

RR230 sensor resolution

Sensor width = 4.50 mm
Sensor height = 3.37 mm
Effective megapixels = 2.11

r = 4.50/3.37 = 1.34

X = √	2.11 × 1000000	= 1255
	1.34

Resolution horizontal: X × r = 1255 × 1.34 = 1682
Resolution vertical: X = 1255

Sensor resolution = 1682 x 1255

RR30 sensor resolution

Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 3.24

r = 5.33/4.00 = 1.33

X = √	3.24 × 1000000	= 1561
	1.33

Resolution horizontal: X × r = 1561 × 1.33 = 2076
Resolution vertical: X = 1561

Sensor resolution = 2076 x 1561

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

RR230 crop factor

Sensor diagonal in mm = 5.62 mm

Crop factor =	43.27	= 7.7
	5.62

RR30 crop factor

Sensor diagonal in mm = 6.66 mm

Crop factor =	43.27	= 6.5
	6.66

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).

RR230 equivalent aperture

Crop factor = 7.7
Aperture = f2.8 - f4.8

35-mm equivalent aperture = (f2.8 - f4.8) × 7.7 = f21.6 - f37

RR30 equivalent aperture

Crop factor = 6.5
Aperture = f2.6 - f4.7

35-mm equivalent aperture = (f2.6 - f4.7) × 6.5 = f16.9 - f30.6

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