Ricoh GR Digital 4 vs. Kodak EasyShare CX6330

Comparison

GR Digital 4 image
vs.
EasyShare CX6330 image

 

Ricoh GR Digital 4 Kodak EasyShare CX6330
Megapixels
10.40 3.10
Max. resolution
3648 x 2736 2032 x 1524
Price
Amazon, B&H Photo, Adorama Amazon, B&H Photo, Adorama

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 
Surface area
42.47 mm²  24.84 mm² 
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 sizes:
Ricoh GR Digital 4
vs.
Kodak EasyShare CX6330
 
Surface area:
Ricoh GR Digital 4
Kodak EasyShare CX6330
Difference: 17.63 mm² (71%)
Ricoh GR Digital 4 has approx. 71% more surface area than Kodak EasyShare CX6330.
Note: You are comparing sensors of very different generations. There is a gap of 8 years between Ricoh GR Digital 4 (2011) and Kodak EasyShare 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.
Pixel pitch
Ricoh GR Digital 4
Kodak EasyShare CX6330
Difference: 0.81 µm (40%)
Pixel pitch of Kodak EasyShare CX6330 is approx. 40% higher than pixel pitch of Ricoh GR Digital 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:
Ricoh GR Digital 4
vs.
Kodak EasyShare CX6330
Pixel area difference: 3.93 µm² (96%)
A pixel on Kodak EasyShare CX6330 sensor is approx. 96% bigger than a pixel on Ricoh GR Digital 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.
Pixel density
Ricoh GR Digital 4
Kodak EasyShare CX6330
Difference: 12.1 MP/cm² (97%)
Ricoh GR Digital 4 has approx. 97% higher pixel density than Kodak EasyShare CX6330.
To learn about the accuracy of these numbers, click here.

Other specifications

Crop factor
4.6  6.02 
Total megapixels
n/a 3.30
Effective megapixels
n/a 3.10
Optical zoom
1x 3x
Digital zoom
Yes Yes
Iso
Auto, 80 - 3200 Auto, 100, 200
Auto focus
Yes Yes
Manual focus
Yes No
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
Aperture
f1.9 f2.7 - f4.6
Aperture (35mm equiv.)
f8.7  f16.3 - f27.7 
Metering
Centre weighted, Multi-segment, Spot Centre weighted
Exposure compensation
-2EV - +2EV with 1/3EV steps -2EV - +2EV in 1/2EV steps
Shutter priority
Yes No
Min. shutter speed
1 sec 1/2 sec
Max. shutter speed
1/2000 sec 1/1400 sec
Flash modes
Anti red-eye, Auto, Fill in, Off, Slow flash Anti red-eye, Auto, Fill in, Off, Slow flash
Built-in flash
Yes Yes
External flash
No No
Viewfinder
Optical (optional) Optical (tunnel)
White balance presets
6 4
LCD display
Yes Yes
LCD size
3" 1.6"
LCD resolution
1,230,000 153,000
Min. image resolution
640 x 480 n/a
Selftimer
Yes Yes
Storage types
SDHC, Secure Digital MultiMedia, Secure Digital
USB
USB 2.0 (480 Mbit/sec) USB 1.0 (1.5 Mbit/sec)
Batteries
Lithium-Ion DB65 rechargeable battery & charger AA (2) batteries (NiMH recommended)
Weight
190g 215g
Dimensions
109x60x33 mm 103x65x38 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 Digital 4 diagonal

The diagonal of Ricoh GR Digital 4 image sensor is not 1/1.7 inch as you might expect, but approximately two thirds of that value. 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 EasyShare CX6330 diagonal

The diagonal of Kodak EasyShare CX6330 image sensor is not 1/2.5 inch as you might expect, but approximately two thirds of that value. 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.

Ricoh GR Digital 4 surface area

Width = 7.53 mm
Height = 5.64 mm

Surface area = 7.53 × 5.64 = 42.47 mm²

Kodak EasyShare CX6330 surface 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

Ricoh GR Digital 4 pixel pitch

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

Kodak EasyShare 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

Ricoh GR Digital 4 pixel area

Pixel pitch = 2.02 µm

Pixel area = 2.02² = 4.08 µm²

Kodak EasyShare 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

You could also use this formula:
Pixel density =   effective megapixels × 1000000  / 10000
sensor surface area in mm²

Ricoh GR Digital 4 pixel density

Sensor resolution width = 3733 pixels
Sensor width = 0.753 cm

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

Kodak EasyShare 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. 22.8 × 15.5 sensor for example has a ratio of 1.47.

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

Ricoh GR Digital 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

Kodak EasyShare 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


Ricoh GR Digital 4 crop factor

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

Kodak EasyShare 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).

Ricoh GR Digital 4 equivalent aperture

Crop factor = 4.6
Aperture = f1.9

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

Kodak EasyShare 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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