Olympus C-900 Zoom vs. Olympus C-990 Zoom
Comparison
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Megapixels
1.31
2.10
Max. image resolution
1280 x 960
1600 x 1200
Sensor
Sensor type
CCD
CCD
Sensor size
1/2.7" (~ 5.33 x 4 mm)
1/2.7" (~ 5.33 x 4 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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| Olympus C-900 Zoom | Olympus C-990 Zoom | |
Surface area:
| 21.32 mm² | vs | 21.32 mm² |
Difference: 0 mm² (0%)
C-900 Zoom and C-990 Zoom sensors are the same size.
Note: You are comparing cameras of different generations.
There is a 2 year gap between Olympus C-900 Zoom (1998) and Olympus C-990 Zoom (2000).
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: 6.14 µm² (60%)
A pixel on Olympus C-900 Zoom sensor is approx. 60% bigger than a pixel on Olympus C-990 Zoom.
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 C-900 Zoom
Olympus C-990 Zoom
Total megapixels
Effective megapixels
Optical zoom
Yes
Yes
Digital zoom
Yes
Yes
ISO sensitivity
Auto
100, 200, 400
RAW
Manual focus
Normal focus range
80 cm
80 cm
Macro focus range
20 cm
20 cm
Focal length (35mm equiv.)
35 - 105 mm
35 - 105 mm
Aperture priority
No
No
Max. aperture
f2.8 - f4.4
f2.8 - f4.4
Metering
Centre weighted
Centre weighted
Exposure compensation
±2 EV (in 1/2 EV steps)
±2 EV (in 1/2 EV steps)
Shutter priority
No
No
Min. shutter speed
1/2 sec
1/2 sec
Max. shutter speed
1/1000 sec
1/1000 sec
Built-in flash
External flash
Viewfinder
Optical
Optical
White balance presets
6
5
Screen size
1.8"
1.8"
Screen resolution
72,000 dots
61,000 dots
Video capture
Max. video resolution
Storage types
SmartMedia
SmartMedia
USB
HDMI
Wireless
GPS
Battery
4x AA
2x CR-V3, 4x AA
Weight
350 g
380 g
Dimensions
127 x 67 x 53 mm
127 x 67 x 53 mm
Year
1998
2000
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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 |
Olympus C-900 Zoom diagonal
The diagonal of C-900 Zoom sensor is not 1/2.7 or 0.37" (9.4 mm) as you might expect, but approximately two thirds of
that value - 6.66 mm. If you want to know why, see
sensor sizes.
w = 5.33 mm
h = 4.00 mm
w = 5.33 mm
h = 4.00 mm
| Diagonal = √ | 5.33² + 4.00² | = 6.66 mm |
Olympus C-990 Zoom diagonal
The diagonal of C-990 Zoom sensor is not 1/2.7 or 0.37" (9.4 mm) as you might expect, but approximately two thirds of
that value - 6.66 mm. If you want to know why, see
sensor sizes.
w = 5.33 mm
h = 4.00 mm
w = 5.33 mm
h = 4.00 mm
| Diagonal = √ | 5.33² + 4.00² | = 6.66 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
C-900 Zoom sensor area
Width = 5.33 mm
Height = 4.00 mm
Surface area = 5.33 × 4.00 = 21.32 mm²
Height = 4.00 mm
Surface area = 5.33 × 4.00 = 21.32 mm²
C-990 Zoom sensor area
Width = 5.33 mm
Height = 4.00 mm
Surface area = 5.33 × 4.00 = 21.32 mm²
Height = 4.00 mm
Surface area = 5.33 × 4.00 = 21.32 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 |
C-900 Zoom pixel pitch
Sensor width = 5.33 mm
Sensor resolution width = 1319 pixels
Sensor resolution width = 1319 pixels
| Pixel pitch = | 5.33 | × 1000 | = 4.04 µm |
| 1319 |
C-990 Zoom pixel pitch
Sensor width = 5.33 mm
Sensor resolution width = 1672 pixels
Sensor resolution width = 1672 pixels
| Pixel pitch = | 5.33 | × 1000 | = 3.19 µm |
| 1672 |
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 |
C-900 Zoom pixel area
Pixel pitch = 4.04 µm
Pixel area = 4.04² = 16.32 µm²
Pixel area = 4.04² = 16.32 µm²
C-990 Zoom pixel area
Pixel pitch = 3.19 µm
Pixel area = 3.19² = 10.18 µm²
Pixel area = 3.19² = 10.18 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 |
C-900 Zoom pixel density
Sensor resolution width = 1319 pixels
Sensor width = 0.533 cm
Pixel density = (1319 / 0.533)² / 1000000 = 6.12 MP/cm²
Sensor width = 0.533 cm
Pixel density = (1319 / 0.533)² / 1000000 = 6.12 MP/cm²
C-990 Zoom pixel density
Sensor resolution width = 1672 pixels
Sensor width = 0.533 cm
Pixel density = (1672 / 0.533)² / 1000000 = 9.84 MP/cm²
Sensor width = 0.533 cm
Pixel density = (1672 / 0.533)² / 1000000 = 9.84 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
C-900 Zoom sensor resolution
Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 1.31
Resolution horizontal: X × r = 992 × 1.33 = 1319
Resolution vertical: X = 992
Sensor resolution = 1319 x 992
Sensor height = 4.00 mm
Effective megapixels = 1.31
| r = 5.33/4.00 = 1.33 |
|
Resolution vertical: X = 992
Sensor resolution = 1319 x 992
C-990 Zoom sensor resolution
Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 2.10
Resolution horizontal: X × r = 1257 × 1.33 = 1672
Resolution vertical: X = 1257
Sensor resolution = 1672 x 1257
Sensor height = 4.00 mm
Effective megapixels = 2.10
| r = 5.33/4.00 = 1.33 |
|
Resolution vertical: X = 1257
Sensor resolution = 1672 x 1257
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 |
C-900 Zoom crop factor
Sensor diagonal in mm = 6.66 mm
| Crop factor = | 43.27 | = 6.5 |
| 6.66 |
C-990 Zoom crop factor
Sensor diagonal in mm = 6.66 mm
| Crop factor = | 43.27 | = 6.5 |
| 6.66 |
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).
C-900 Zoom equivalent aperture
Crop factor = 6.5
Aperture = f2.8 - f4.4
35-mm equivalent aperture = (f2.8 - f4.4) × 6.5 = f18.2 - f28.6
Aperture = f2.8 - f4.4
35-mm equivalent aperture = (f2.8 - f4.4) × 6.5 = f18.2 - f28.6
C-990 Zoom equivalent aperture
Crop factor = 6.5
Aperture = f2.8 - f4.4
35-mm equivalent aperture = (f2.8 - f4.4) × 6.5 = f18.2 - f28.6
Aperture = f2.8 - f4.4
35-mm equivalent aperture = (f2.8 - f4.4) × 6.5 = f18.2 - f28.6
More comparisons of Olympus C-900 Zoom:
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- Olympus C-900 Zoom vs. Olympus D-460 Zoom
- Olympus C-900 Zoom vs. Olympus C-2000 Zoom
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- Olympus C-900 Zoom vs. Nikon Coolpix 2200
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- Olympus C-900 Zoom vs. Sanyo VPC X1220
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