Olympus SP 320 vs. Casio Exilim EX-S2
Comparison
| change cameras » | |||||
|
vs |
|
|||
| Olympus SP 320 | Casio Exilim EX-S2 | ||||
| check price » | check price » | ||||
Megapixels
7.41
2.00
Max. image resolution
3072 x 2304
1600 x 1200
Sensor
Sensor type
CCD
CCD
Sensor size
1/1.8" (~ 7.11 x 5.33 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 | : | 1 |
| (ratio) | ||
| Olympus SP 320 | Casio Exilim EX-S2 | |
Surface area:
| 37.90 mm² | vs | 37.90 mm² |
Difference: 0 mm² (0%)
SP 320 and S2 sensors are the same size.
Note: You are comparing cameras of different generations.
There is a 4 year gap between Olympus SP 320 (2006) and Casio S2 (2002).
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: 13.86 µm² (269%)
A pixel on Casio S2 sensor is approx. 269% bigger than a pixel on Olympus SP 320.
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
Olympus SP 320
Casio S2
Total megapixels
Effective megapixels
Optical zoom
Yes
No
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 64, 100, 200, 400, 800
RAW
Manual focus
Normal focus range
20 cm
100 cm
Macro focus range
2 cm
Focal length (35mm equiv.)
38 - 114 mm
36 mm
Aperture priority
Yes
No
Max. aperture
f2.8 - f4.9
f3.2
Metering
Centre weighted, ESP Digital, Spot
Centre weighted, Matrix
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
Yes
No
Min. shutter speed
8min sec
1/4 sec
Max. shutter speed
1/2000 sec
1/6400 sec
Built-in flash
External flash
Viewfinder
None
Optical
White balance presets
7
5
Screen size
2.5"
1.6"
Screen resolution
115,000 dots
84,960 dots
Video capture
Max. video resolution
Storage types
xD Picture card
MultiMedia, Secure Digital
USB
USB 2.0 (480 Mbit/sec)
USB 1.1
HDMI
Wireless
GPS
Battery
1x CR-V3, 2x AA
Li-Ion
Weight
180 g
86 g
Dimensions
99.5 x 65 x 35 mm
88 x 55 x 12 mm
Year
2006
2002
Choose cameras to compare
Popular comparisons:
- Olympus SP 320 vs. Sony Cyber-shot DSC-W17
- Olympus SP 320 vs. Olympus SP 350
- Olympus SP 320 vs. Nikon D700
- Olympus SP 320 vs. Sony Cyber-shot DSC-S2100
- Olympus SP 320 vs. Canon PowerShot G10
- Olympus SP 320 vs. Olympus SP 310
- Olympus SP 320 vs. Fujifilm FinePix E900 Zoom
- Olympus SP 320 vs. Olympus C-5060 Wide Zoom
- Olympus SP 320 vs. Canon PowerShot SX160 IS
- Olympus SP 320 vs. Canon PowerShot G2
- Olympus SP 320 vs. Casio Exilim EX-S2
Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
Olympus SP 320 diagonal
The diagonal of SP 320 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 |
Casio S2 diagonal
The diagonal of S2 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.
SP 320 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
S2 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 |
SP 320 pixel pitch
Sensor width = 7.11 mm
Sensor resolution width = 3139 pixels
Sensor resolution width = 3139 pixels
| Pixel pitch = | 7.11 | × 1000 | = 2.27 µm |
| 3139 |
S2 pixel pitch
Sensor width = 7.11 mm
Sensor resolution width = 1631 pixels
Sensor resolution width = 1631 pixels
| Pixel pitch = | 7.11 | × 1000 | = 4.36 µm |
| 1631 |
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 |
SP 320 pixel area
Pixel pitch = 2.27 µm
Pixel area = 2.27² = 5.15 µm²
Pixel area = 2.27² = 5.15 µm²
S2 pixel area
Pixel pitch = 4.36 µm
Pixel area = 4.36² = 19.01 µm²
Pixel area = 4.36² = 19.01 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 |
SP 320 pixel density
Sensor resolution width = 3139 pixels
Sensor width = 0.711 cm
Pixel density = (3139 / 0.711)² / 1000000 = 19.49 MP/cm²
Sensor width = 0.711 cm
Pixel density = (3139 / 0.711)² / 1000000 = 19.49 MP/cm²
S2 pixel density
Sensor resolution width = 1631 pixels
Sensor width = 0.711 cm
Pixel density = (1631 / 0.711)² / 1000000 = 5.26 MP/cm²
Sensor width = 0.711 cm
Pixel density = (1631 / 0.711)² / 1000000 = 5.26 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
SP 320 sensor resolution
Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 7.41
Resolution horizontal: X × r = 2360 × 1.33 = 3139
Resolution vertical: X = 2360
Sensor resolution = 3139 x 2360
Sensor height = 5.33 mm
Effective megapixels = 7.41
| r = 7.11/5.33 = 1.33 |
|
Resolution vertical: X = 2360
Sensor resolution = 3139 x 2360
S2 sensor resolution
Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 2.00
Resolution horizontal: X × r = 1226 × 1.33 = 1631
Resolution vertical: X = 1226
Sensor resolution = 1631 x 1226
Sensor height = 5.33 mm
Effective megapixels = 2.00
| r = 7.11/5.33 = 1.33 |
|
Resolution vertical: X = 1226
Sensor resolution = 1631 x 1226
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 |
SP 320 crop factor
Sensor diagonal in mm = 8.89 mm
| Crop factor = | 43.27 | = 4.87 |
| 8.89 |
S2 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).
SP 320 equivalent aperture
Crop factor = 4.87
Aperture = f2.8 - f4.9
35-mm equivalent aperture = (f2.8 - f4.9) × 4.87 = f13.6 - f23.9
Aperture = f2.8 - f4.9
35-mm equivalent aperture = (f2.8 - f4.9) × 4.87 = f13.6 - f23.9
S2 equivalent aperture
Crop factor = 4.87
Aperture = f3.2
35-mm equivalent aperture = (f3.2) × 4.87 = f15.6
Aperture = f3.2
35-mm equivalent aperture = (f3.2) × 4.87 = f15.6
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.