Ricoh GR Digital 4 vs. Kodak EasyShare CX6330

Comparison

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GR Digital 4 image
vs
EasyShare CX6330 image
Ricoh GR Digital 4 Kodak EasyShare CX6330
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Megapixels
10.40
3.10
Max. image resolution
3648 x 2736
2032 x 1524

Sensor

Sensor type
CCD
CCD
Sensor size
1/1.7" (~ 7.53 x 5.64 mm)
1/2.5" (~ 5.75 x 4.32 mm)
Sensor resolution
3733 x 2786
2031 x 1527
Diagonal
9.41 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
1.71 : 1
(ratio)
Ricoh GR Digital 4 Kodak EasyShare CX6330
Surface area:
42.47 mm² vs 24.84 mm²
Difference: 17.63 mm² (71%)
GR 4 sensor is approx. 1.71x bigger than CX6330 sensor.
Note: You are comparing sensors of very different generations. There is a gap of 8 years between Ricoh GR 4 (2011) and Kodak CX6330 (2003). Eight years is a lot of time in terms of technology, meaning newer sensors are overall much more efficient than the older ones.
Pixel pitch
2.02 µm
2.83 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: 0.81 µm (40%)
Pixel pitch of CX6330 is approx. 40% higher than pixel pitch of GR 4.
Pixel area
4.08 µm²
8.01 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:
vs
Pixel area difference: 3.93 µm² (96%)
A pixel on Kodak CX6330 sensor is approx. 96% bigger than a pixel on Ricoh GR 4.
Pixel density
24.58 MP/cm²
12.48 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: 12.1 µm (97%)
Ricoh GR 4 has approx. 97% higher pixel density than Kodak CX6330.
To learn about the accuracy of these numbers, click here.

Specs

Ricoh GR 4
Kodak CX6330
Crop factor
4.6
6.02
Total megapixels
3.30
Effective megapixels
3.10
Optical zoom
1x
3x
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 80 - 3200
Auto, 100, 200
RAW
Manual focus
Normal focus range
30 cm
60 cm
Macro focus range
1 cm
13 cm
Focal length (35mm equiv.)
28 mm
37 - 111 mm
Aperture priority
Yes
No
Max. aperture
f1.9
f2.7 - f4.6
Max. aperture (35mm equiv.)
f8.7
f16.3 - f27.7
Metering
Centre weighted, Multi-segment, Spot
Centre weighted
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/2 EV steps)
Shutter priority
Yes
No
Min. shutter speed
1 sec
1/2 sec
Max. shutter speed
1/2000 sec
1/1400 sec
Built-in flash
External flash
Viewfinder
Optical (optional)
Optical (tunnel)
White balance presets
6
4
Screen size
3"
1.6"
Screen resolution
1,230,000 dots
153,000 dots
Video capture
Max. video resolution
Storage types
SDHC, Secure Digital
MultiMedia, Secure Digital
USB
USB 2.0 (480 Mbit/sec)
USB 1.0
HDMI
Wireless
GPS
Battery
Lithium-Ion DB65 rechargeable battery
AA (2) batteries (NiMH recommended)
Weight
190 g
215 g
Dimensions
109 x 60 x 33 mm
103 x 65 x 38 mm
Year
2011
2003



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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 GR 4 diagonal

The diagonal of GR 4 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

Kodak CX6330 diagonal

The diagonal of CX6330 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.

GR 4 sensor area

Width = 7.53 mm
Height = 5.64 mm

Surface area = 7.53 × 5.64 = 42.47 mm²

CX6330 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

GR 4 pixel pitch

Sensor width = 7.53 mm
Sensor resolution width = 3733 pixels
Pixel pitch =   7.53  × 1000  = 2.02 µm
3733

CX6330 pixel pitch

Sensor width = 5.75 mm
Sensor resolution width = 2031 pixels
Pixel pitch =   5.75  × 1000  = 2.83 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

GR 4 pixel area

Pixel pitch = 2.02 µm

Pixel area = 2.02² = 4.08 µm²

CX6330 pixel area

Pixel pitch = 2.83 µm

Pixel area = 2.83² = 8.01 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

GR 4 pixel density

Sensor resolution width = 3733 pixels
Sensor width = 0.753 cm

Pixel density = (3733 / 0.753)² / 1000000 = 24.58 MP/cm²

CX6330 pixel density

Sensor resolution width = 2031 pixels
Sensor width = 0.575 cm

Pixel density = (2031 / 0.575)² / 1000000 = 12.48 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

GR 4 sensor resolution

Sensor width = 7.53 mm
Sensor height = 5.64 mm
Effective megapixels = 10.40
r = 7.53/5.64 = 1.34
X =  10.40 × 1000000  = 2786
1.34
Resolution horizontal: X × r = 2786 × 1.34 = 3733
Resolution vertical: X = 2786

Sensor resolution = 3733 x 2786

CX6330 sensor resolution

Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 3.10
r = 5.75/4.32 = 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


GR 4 crop factor

Sensor diagonal in mm = 9.41 mm
Crop factor =   43.27  = 4.6
9.41

CX6330 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).

GR 4 equivalent aperture

Crop factor = 4.6
Aperture = f1.9

35-mm equivalent aperture = (f1.9) × 4.6 = f8.7

CX6330 equivalent aperture

Crop factor = 6.02
Aperture = f2.7 - f4.6

35-mm equivalent aperture = (f2.7 - f4.6) × 6.02 = f16.3 - f27.7

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