Ricoh Caplio RR1 vs. Ricoh RDC-7

Comparison

change cameras »

Ricoh Caplio RR1

Ricoh RDC-7

check price »

Megapixels

3.90

3.10

Max. image resolution

2272 x 1704

3072 x 2304

Sensor

Sensor type

CCD

Sensor size

1/1.8" (~ 7.11 x 5.33 mm)

Sensor resolution

2277 x 1712

2031 x 1527

Diagonal

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
(ratio)

Ricoh Caplio RR1		Ricoh RDC-7

Surface area:

37.90 mm²

Difference: 0 mm² (0%)

RR1 and RDC-7 sensors are the same size.

Pixel pitch

3.12 µm

3.5 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: 0.38 µm (12%)

Pixel pitch of RDC-7 is approx. 12% higher than pixel pitch of RR1.

Pixel area

9.73 µm²

12.25 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: 2.52 µm² (26%)

A pixel on Ricoh RDC-7 sensor is approx. 26% bigger than a pixel on Ricoh RR1.

Pixel density

10.26 MP/cm²

8.16 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: 2.1 µm (26%)

Ricoh RR1 has approx. 26% higher pixel density than Ricoh RDC-7.

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

Specs

Ricoh RR1

Ricoh RDC-7

Crop factor

4.87

Total megapixels

4.10

3.30

Effective megapixels

3.90

3.10

Optical zoom

Digital zoom

Yes

ISO sensitivity

Auto, 150, 200, 400, 800

Auto, 150, 200, 400

RAW

Manual focus

Normal focus range

24 cm

Macro focus range

1 cm

Focal length (35mm equiv.)

35 - 105 mm

Aperture priority

Max. aperture

f2.6 - f3.4

Max. aperture (35mm equiv.)

f12.7 - f16.6

Metering

Centre weighted

Exposure compensation

±2 EV (in 1/2 EV steps)

Shutter priority

Min. shutter speed

8 sec

Max. shutter speed

1/1000 sec

Built-in flash

External flash

Viewfinder

Optical (tunnel)

White balance presets

Screen size

Screen resolution

200,640 dots

Video capture

Max. video resolution

Storage types

SmartMedia

USB

USB 1.0

HDMI

Wireless

GPS

Battery

Lithium-Ion rechargeable

Weight

320 g

Dimensions

135 x 26 x 74 mm

Year

2001

2000

Choose cameras to compare

Popular comparisons:

Diagonal

Diagonal is calculated by the use of Pythagorean theorem:

Diagonal = √

w² + h²

where w = sensor width and h = sensor height

Ricoh RR1 diagonal

The diagonal of RR1 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

Ricoh RDC-7 diagonal

The diagonal of RDC-7 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.

RR1 sensor area

Width = 7.11 mm
Height = 5.33 mm

Surface area = 7.11 × 5.33 = 37.90 mm²

RDC-7 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

RR1 pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2277 pixels

Pixel pitch =	7.11	× 1000	= 3.12 µm
	2277

RDC-7 pixel pitch

Sensor width = 7.11 mm
Sensor resolution width = 2031 pixels

Pixel pitch =	7.11	× 1000	= 3.5 µm
	2031

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

RR1 pixel area

Pixel pitch = 3.12 µm

Pixel area = 3.12² = 9.73 µm²

RDC-7 pixel area

Pixel pitch = 3.5 µm

Pixel area = 3.5² = 12.25 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

RR1 pixel density

Sensor resolution width = 2277 pixels
Sensor width = 0.711 cm

Pixel density = (2277 / 0.711)² / 1000000 = 10.26 MP/cm²

RDC-7 pixel density

Sensor resolution width = 2031 pixels
Sensor width = 0.711 cm

Pixel density = (2031 / 0.711)² / 1000000 = 8.16 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

RR1 sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 3.90

r = 7.11/5.33 = 1.33

X = √	3.90 × 1000000	= 1712
	1.33

Resolution horizontal: X × r = 1712 × 1.33 = 2277
Resolution vertical: X = 1712

Sensor resolution = 2277 x 1712

RDC-7 sensor resolution

Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 3.10

r = 7.11/5.33 = 1.33

X = √	3.10 × 1000000	= 1527
	1.33

Resolution horizontal: X × r = 1527 × 1.33 = 2031
Resolution vertical: X = 1527

Sensor resolution = 2031 x 1527

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

RR1 crop factor

Sensor diagonal in mm = 8.89 mm

Crop factor =	43.27	= 4.87
	8.89

RDC-7 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).

RR1 equivalent aperture

Crop factor = 4.87
Aperture = f2.6 - f3.4

35-mm equivalent aperture = (f2.6 - f3.4) × 4.87 = f12.7 - f16.6

RDC-7 equivalent aperture

Crop factor = 4.87
Aperture = f2.6 - f3.4

35-mm equivalent aperture = (f2.6 - f3.4) × 4.87 = f12.7 - f16.6

Enter your screen size (diagonal)

My screen size is inches

Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.