Konica-Minolta DiMAGE X31 vs. Vivitar ViviCam X30
Comparison
change cameras » | |||||
|
vs |
|
|||
Konica-Minolta DiMAGE X31 | Vivitar ViviCam X30 | ||||
check price » | check price » |
Megapixels
3.20
10.00
Max. image resolution
2048 x 1536
3648 x 2736
Sensor
Sensor type
CCD
CCD
Sensor size
1/3.2" (~ 4.5 x 3.37 mm)
1/1.8" (~ 7.11 x 5.33 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 »
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 | : | 2.5 |
(ratio) | ||
Konica-Minolta DiMAGE X31 | Vivitar ViviCam X30 |
Surface area:
15.17 mm² | vs | 37.90 mm² |
Difference: 22.73 mm² (150%)
X30 sensor is approx. 2.5x bigger than DiMAGE X31 sensor.
Note: You are comparing cameras of different generations.
There is a 2 year gap between Konica-Minolta DiMAGE X31 (2004) and Vivitar X30 (2006).
All things being equal, newer sensor generations generally outperform the older.
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.
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 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.
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: 0.91 µm² (24%)
A pixel on Konica-Minolta DiMAGE X31 sensor is approx. 24% bigger than a pixel on Vivitar X30.
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.
Higher pixel density means smaller pixels and lower pixel density means larger pixels.
To learn about the accuracy of these numbers,
click here.
Specs
Konica-Minolta DiMAGE X31
Vivitar X30
Total megapixels
Effective megapixels
Optical zoom
3x
Yes
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 50, 100, 200
Auto
RAW
Manual focus
Normal focus range
10 cm
Macro focus range
10 cm
5 cm
Focal length (35mm equiv.)
36 - 108 mm
36 - 108 mm
Aperture priority
No
Yes
Max. aperture
f2.8 - f3.7
Metering
256-segment Matrix
Centre weighted
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
4 sec
1/2 sec
Max. shutter speed
1/500 sec
1/1500 sec
Built-in flash
External flash
Viewfinder
None
None
White balance presets
6
6
Screen size
1.5"
2.5"
Screen resolution
76,000 dots
201,000 dots
Video capture
Max. video resolution
Storage types
MultiMedia, Secure Digital
Secure Digital
USB
USB 1.0
USB 1.1
HDMI
Wireless
GPS
Battery
AA (2) batteries (NiMH recommended)
Li-Ion
Weight
115 g
150 g
Dimensions
86 x 67 x 24 mm
91 x 57 x 27 mm
Year
2004
2006
Choose cameras to compare
Popular comparisons:
- Konica-Minolta DiMAGE X31 vs. Konica-Minolta DiMAGE Xg
- Konica-Minolta DiMAGE X31 vs. Minolta DiMAGE Xt
- Konica-Minolta DiMAGE X31 vs. Konica-Minolta DiMAGE X60
- Konica-Minolta DiMAGE X31 vs. Vivitar ViviCam X30
- Konica-Minolta DiMAGE X31 vs. Konica-Minolta DiMAGE X50
- Konica-Minolta DiMAGE X31 vs. Olympus VR-350
- Konica-Minolta DiMAGE X31 vs. Pentax Optio 30
- Konica-Minolta DiMAGE X31 vs. Canon PowerShot SD770 IS
- Konica-Minolta DiMAGE X31 vs. Konica-Minolta DiMAGE X1
- Konica-Minolta DiMAGE X31 vs. Konica-Minolta DiMAGE E500
- Konica-Minolta DiMAGE X31 vs. Fujifilm FinePix 40i
Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
Diagonal = √ | w² + h² |
Konica-Minolta DiMAGE X31 diagonal
The diagonal of DiMAGE X31 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
w = 4.50 mm
h = 3.37 mm
Diagonal = √ | 4.50² + 3.37² | = 5.62 mm |
Vivitar X30 diagonal
The diagonal of X30 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
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.
DiMAGE X31 sensor area
Width = 4.50 mm
Height = 3.37 mm
Surface area = 4.50 × 3.37 = 15.17 mm²
Height = 3.37 mm
Surface area = 4.50 × 3.37 = 15.17 mm²
X30 sensor area
Width = 7.11 mm
Height = 5.33 mm
Surface area = 7.11 × 5.33 = 37.90 mm²
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 |
DiMAGE X31 pixel pitch
Sensor width = 4.50 mm
Sensor resolution width = 2070 pixels
Sensor resolution width = 2070 pixels
Pixel pitch = | 4.50 | × 1000 | = 2.17 µm |
2070 |
X30 pixel pitch
Sensor width = 7.11 mm
Sensor resolution width = 3647 pixels
Sensor resolution width = 3647 pixels
Pixel pitch = | 7.11 | × 1000 | = 1.95 µm |
3647 |
Pixel area
The area of one pixel can be calculated by simply squaring the pixel pitch:
You could also divide sensor surface area with effective megapixels:
Pixel area = pixel pitch²
You could also divide sensor surface area with effective megapixels:
Pixel area = | sensor surface area in mm² |
effective megapixels |
DiMAGE X31 pixel area
Pixel pitch = 2.17 µm
Pixel area = 2.17² = 4.71 µm²
Pixel area = 2.17² = 4.71 µm²
X30 pixel area
Pixel pitch = 1.95 µm
Pixel area = 1.95² = 3.8 µm²
Pixel area = 1.95² = 3.8 µm²
Pixel density
Pixel density can be calculated with the following formula:
One could also use this 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 |
DiMAGE X31 pixel density
Sensor resolution width = 2070 pixels
Sensor width = 0.45 cm
Pixel density = (2070 / 0.45)² / 1000000 = 21.16 MP/cm²
Sensor width = 0.45 cm
Pixel density = (2070 / 0.45)² / 1000000 = 21.16 MP/cm²
X30 pixel density
Sensor resolution width = 3647 pixels
Sensor width = 0.711 cm
Pixel density = (3647 / 0.711)² / 1000000 = 26.31 MP/cm²
Sensor width = 0.711 cm
Pixel density = (3647 / 0.711)² / 1000000 = 26.31 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:
3. To get sensor resolution we then multiply X with the corresponding ratio:
Resolution horizontal: X × r
Resolution vertical: X
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 → |
|
Resolution horizontal: X × r
Resolution vertical: X
DiMAGE X31 sensor resolution
Sensor width = 4.50 mm
Sensor height = 3.37 mm
Effective megapixels = 3.20
Resolution horizontal: X × r = 1545 × 1.34 = 2070
Resolution vertical: X = 1545
Sensor resolution = 2070 x 1545
Sensor height = 3.37 mm
Effective megapixels = 3.20
r = 4.50/3.37 = 1.34 |
|
Resolution vertical: X = 1545
Sensor resolution = 2070 x 1545
X30 sensor resolution
Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 10.00
Resolution horizontal: X × r = 2742 × 1.33 = 3647
Resolution vertical: X = 2742
Sensor resolution = 3647 x 2742
Sensor height = 5.33 mm
Effective megapixels = 10.00
r = 7.11/5.33 = 1.33 |
|
Resolution vertical: X = 2742
Sensor resolution = 3647 x 2742
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 |
DiMAGE X31 crop factor
Sensor diagonal in mm = 5.62 mm
Crop factor = | 43.27 | = 7.7 |
5.62 |
X30 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).
DiMAGE X31 equivalent aperture
Crop factor = 7.7
Aperture = f2.8 - f3.7
35-mm equivalent aperture = (f2.8 - f3.7) × 7.7 = f21.6 - f28.5
Aperture = f2.8 - f3.7
35-mm equivalent aperture = (f2.8 - f3.7) × 7.7 = f21.6 - f28.5
X30 equivalent aperture
Aperture is a lens characteristic, so it's calculated only for
fixed lens cameras. If you want to know the equivalent aperture for
Vivitar X30, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Vivitar X30 is 4.87
Crop factor for Vivitar X30 is 4.87
More comparisons of Konica-Minolta DiMAGE X31:
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.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.