Kodak EasyShare CX7525 vs. Olympus E-510 / EVOLT E-510
Comparison
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| Kodak EasyShare CX7525 | Olympus E-510 / EVOLT E-510 | ||||
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Megapixels
4.23
10.00
Max. image resolution
2576 x 1932
3648 x 2736
Sensor
Sensor type
CCD
CMOS
Sensor size
1/2.5" (~ 5.75 x 4.32 mm)
Four Thirds (17.3 x 13 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 | : | 9.05 |
| (ratio) | ||
| Kodak EasyShare CX7525 | Olympus E-510 / EVOLT E-510 | |
Surface area:
| 24.84 mm² | vs | 224.90 mm² |
Difference: 200.06 mm² (805%)
E-510 / EVOLT E-510 sensor is approx. 9.05x bigger than CX7525 sensor.
Note: You are comparing cameras of different generations.
There is a 2 year gap between Kodak CX7525 (2005) and Olympus E-510 / EVOLT E-510 (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: 16.57 µm² (281%)
A pixel on Olympus E-510 / EVOLT E-510 sensor is approx. 281% bigger than a pixel on Kodak CX7525.
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
Kodak CX7525
Olympus E-510 / EVOLT E-510
Total megapixels
11.80
Effective megapixels
10.00
Optical zoom
Yes
Digital zoom
Yes
No
ISO sensitivity
Auto, 80, 100, 160, 200, 400
Auto, 100, 200, 400, 800, 1600
RAW
Manual focus
Normal focus range
60 cm
Macro focus range
13 cm
Focal length (35mm equiv.)
34 - 102 mm
Aperture priority
No
Yes
Max. aperture
f2.7 - f5.2
Metering
Centre weighted, Multi-pattern, Spot
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/2 EV steps)
±5 EV (in 1/3 EV steps)
Shutter priority
No
Yes
Min. shutter speed
1/2 sec
60 sec
Max. shutter speed
1/1400 sec
1/4000 sec
Built-in flash
External flash
Viewfinder
Optical
Optical (pentamirror)
White balance presets
4
8
Screen size
1.6"
2.5"
Screen resolution
230,000 dots
Video capture
Max. video resolution
Storage types
MultiMedia, Secure Digital
Compact Flash (Type I or II), xD Picture Card
USB
USB 1.1
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
1x CR-V3, 2x AA
Lithium-Ion rechargeable
Weight
192 g
490 g
Dimensions
102.5 x 65 x 38 mm
136 x 92 x 68 mm
Year
2005
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 |
Kodak CX7525 diagonal
The diagonal of CX7525 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
w = 5.75 mm
h = 4.32 mm
| Diagonal = √ | 5.75² + 4.32² | = 7.19 mm |
Olympus E-510 / EVOLT E-510 diagonal
w = 17.30 mm
h = 13.00 mm
h = 13.00 mm
| Diagonal = √ | 17.30² + 13.00² | = 21.64 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
CX7525 sensor area
Width = 5.75 mm
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
E-510 / EVOLT E-510 sensor area
Width = 17.30 mm
Height = 13.00 mm
Surface area = 17.30 × 13.00 = 224.90 mm²
Height = 13.00 mm
Surface area = 17.30 × 13.00 = 224.90 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 |
CX7525 pixel pitch
Sensor width = 5.75 mm
Sensor resolution width = 2371 pixels
Sensor resolution width = 2371 pixels
| Pixel pitch = | 5.75 | × 1000 | = 2.43 µm |
| 2371 |
E-510 / EVOLT E-510 pixel pitch
Sensor width = 17.30 mm
Sensor resolution width = 3647 pixels
Sensor resolution width = 3647 pixels
| Pixel pitch = | 17.30 | × 1000 | = 4.74 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 |
CX7525 pixel area
Pixel pitch = 2.43 µm
Pixel area = 2.43² = 5.9 µm²
Pixel area = 2.43² = 5.9 µm²
E-510 / EVOLT E-510 pixel area
Pixel pitch = 4.74 µm
Pixel area = 4.74² = 22.47 µm²
Pixel area = 4.74² = 22.47 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 |
CX7525 pixel density
Sensor resolution width = 2371 pixels
Sensor width = 0.575 cm
Pixel density = (2371 / 0.575)² / 1000000 = 17 MP/cm²
Sensor width = 0.575 cm
Pixel density = (2371 / 0.575)² / 1000000 = 17 MP/cm²
E-510 / EVOLT E-510 pixel density
Sensor resolution width = 3647 pixels
Sensor width = 1.73 cm
Pixel density = (3647 / 1.73)² / 1000000 = 4.44 MP/cm²
Sensor width = 1.73 cm
Pixel density = (3647 / 1.73)² / 1000000 = 4.44 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
CX7525 sensor resolution
Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 4.23
Resolution horizontal: X × r = 1783 × 1.33 = 2371
Resolution vertical: X = 1783
Sensor resolution = 2371 x 1783
Sensor height = 4.32 mm
Effective megapixels = 4.23
| r = 5.75/4.32 = 1.33 |
|
Resolution vertical: X = 1783
Sensor resolution = 2371 x 1783
E-510 / EVOLT E-510 sensor resolution
Sensor width = 17.30 mm
Sensor height = 13.00 mm
Effective megapixels = 10.00
Resolution horizontal: X × r = 2742 × 1.33 = 3647
Resolution vertical: X = 2742
Sensor resolution = 3647 x 2742
Sensor height = 13.00 mm
Effective megapixels = 10.00
| r = 17.30/13.00 = 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 |
CX7525 crop factor
Sensor diagonal in mm = 7.19 mm
| Crop factor = | 43.27 | = 6.02 |
| 7.19 |
E-510 / EVOLT E-510 crop factor
Sensor diagonal in mm = 21.64 mm
| Crop factor = | 43.27 | = 2 |
| 21.64 |
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).
CX7525 equivalent aperture
Crop factor = 6.02
Aperture = f2.7 - f5.2
35-mm equivalent aperture = (f2.7 - f5.2) × 6.02 = f16.3 - f31.3
Aperture = f2.7 - f5.2
35-mm equivalent aperture = (f2.7 - f5.2) × 6.02 = f16.3 - f31.3
E-510 / EVOLT E-510 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
Olympus E-510 / EVOLT E-510, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for Olympus E-510 / EVOLT E-510 is 2
Crop factor for Olympus E-510 / EVOLT E-510 is 2
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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.