Concord Eye-Q 2040 vs. Pentax K100D Super
Comparison
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| Concord Eye-Q 2040 | Pentax K100D Super | ||||
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Megapixels
2.00
6.10
Max. image resolution
1600 x 1200
3008 x 2008
Sensor
Sensor type
CMOS
CCD
Sensor size
1/2" (~ 6.4 x 4.8 mm)
23.5 x 15.7 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 »
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| 1 | : | 12.01 |
| (ratio) | ||
| Concord Eye-Q 2040 | Pentax K100D Super | |
Surface area:
| 30.72 mm² | vs | 368.95 mm² |
Difference: 338.23 mm² (1101%)
K100D Super sensor is approx. 12.01x bigger than Eye-Q 2040 sensor.
Note: You are comparing cameras of different generations.
There is a 4 year gap between Concord Eye-Q 2040 (2003) and Pentax K100D Super (2007).
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: 45 µm² (293%)
A pixel on Pentax K100D Super sensor is approx. 293% bigger than a pixel on Concord Eye-Q 2040.
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
Concord Eye-Q 2040
Pentax K100D Super
Total megapixels
6.31
Effective megapixels
6.10
Optical zoom
Yes
Digital zoom
Yes
No
ISO sensitivity
100
Auto, 200, 400, 800, 1600, 3200
RAW
Manual focus
Normal focus range
120 cm
Macro focus range
Focal length (35mm equiv.)
48 mm
Aperture priority
No
Yes
Max. aperture
f3.2
Metering
Centre weighted
Centre weighted, Spot
Exposure compensation
±2 EV (in 1/2 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
30 sec
Max. shutter speed
1/4000 sec
Built-in flash
External flash
Viewfinder
Optical
Optical (pentamirror)
White balance presets
3
7
Screen size
1.6"
2.5"
Screen resolution
71,760 dots
210,000 dots
Video capture
Max. video resolution
Storage types
MultiMedia, Secure Digital
MultiMedia, SDHC, Secure Digital
USB
USB 1.1
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
2x AA
AA (4) batteries (NiMH recommended)
Weight
116 g
646 g
Dimensions
123 x 61 x 34 mm
129.5 x 92.5 x 70.0 mm
Year
2003
2007
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
Concord Eye-Q 2040 diagonal
The diagonal of Eye-Q 2040 sensor is not 1/2 or 0.5" (12.7 mm) as you might expect, but approximately two thirds of
that value - 8 mm. If you want to know why, see
sensor sizes.
w = 6.40 mm
h = 4.80 mm
w = 6.40 mm
h = 4.80 mm
| Diagonal = √ | 6.40² + 4.80² | = 8.00 mm |
Pentax K100D Super diagonal
w = 23.50 mm
h = 15.70 mm
h = 15.70 mm
| Diagonal = √ | 23.50² + 15.70² | = 28.26 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
Eye-Q 2040 sensor area
Width = 6.40 mm
Height = 4.80 mm
Surface area = 6.40 × 4.80 = 30.72 mm²
Height = 4.80 mm
Surface area = 6.40 × 4.80 = 30.72 mm²
K100D Super sensor area
Width = 23.50 mm
Height = 15.70 mm
Surface area = 23.50 × 15.70 = 368.95 mm²
Height = 15.70 mm
Surface area = 23.50 × 15.70 = 368.95 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 |
Eye-Q 2040 pixel pitch
Sensor width = 6.40 mm
Sensor resolution width = 1631 pixels
Sensor resolution width = 1631 pixels
| Pixel pitch = | 6.40 | × 1000 | = 3.92 µm |
| 1631 |
K100D Super pixel pitch
Sensor width = 23.50 mm
Sensor resolution width = 3026 pixels
Sensor resolution width = 3026 pixels
| Pixel pitch = | 23.50 | × 1000 | = 7.77 µm |
| 3026 |
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 |
Eye-Q 2040 pixel area
Pixel pitch = 3.92 µm
Pixel area = 3.92² = 15.37 µm²
Pixel area = 3.92² = 15.37 µm²
K100D Super pixel area
Pixel pitch = 7.77 µm
Pixel area = 7.77² = 60.37 µm²
Pixel area = 7.77² = 60.37 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 |
Eye-Q 2040 pixel density
Sensor resolution width = 1631 pixels
Sensor width = 0.64 cm
Pixel density = (1631 / 0.64)² / 1000000 = 6.49 MP/cm²
Sensor width = 0.64 cm
Pixel density = (1631 / 0.64)² / 1000000 = 6.49 MP/cm²
K100D Super pixel density
Sensor resolution width = 3026 pixels
Sensor width = 2.35 cm
Pixel density = (3026 / 2.35)² / 1000000 = 1.66 MP/cm²
Sensor width = 2.35 cm
Pixel density = (3026 / 2.35)² / 1000000 = 1.66 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
Eye-Q 2040 sensor resolution
Sensor width = 6.40 mm
Sensor height = 4.80 mm
Effective megapixels = 2.00
Resolution horizontal: X × r = 1226 × 1.33 = 1631
Resolution vertical: X = 1226
Sensor resolution = 1631 x 1226
Sensor height = 4.80 mm
Effective megapixels = 2.00
| r = 6.40/4.80 = 1.33 |
|
Resolution vertical: X = 1226
Sensor resolution = 1631 x 1226
K100D Super sensor resolution
Sensor width = 23.50 mm
Sensor height = 15.70 mm
Effective megapixels = 6.10
Resolution horizontal: X × r = 2017 × 1.5 = 3026
Resolution vertical: X = 2017
Sensor resolution = 3026 x 2017
Sensor height = 15.70 mm
Effective megapixels = 6.10
| r = 23.50/15.70 = 1.5 |
|
Resolution vertical: X = 2017
Sensor resolution = 3026 x 2017
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 |
Eye-Q 2040 crop factor
Sensor diagonal in mm = 8.00 mm
| Crop factor = | 43.27 | = 5.41 |
| 8.00 |
K100D Super crop factor
Sensor diagonal in mm = 28.26 mm
| Crop factor = | 43.27 | = 1.53 |
| 28.26 |
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).
Eye-Q 2040 equivalent aperture
Crop factor = 5.41
Aperture = f3.2
35-mm equivalent aperture = (f3.2) × 5.41 = f17.3
Aperture = f3.2
35-mm equivalent aperture = (f3.2) × 5.41 = f17.3
K100D Super 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
Pentax K100D Super, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Pentax K100D Super is 1.53
Crop factor for Pentax K100D Super is 1.53
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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.