Rollei Powerflex 800 vs. BenQ GH200
Comparison
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| Rollei Powerflex 800 | BenQ GH200 | ||||
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Megapixels
14.00
14.10
Max. image resolution
4320 x 3240
4320 x 3240
Sensor
Sensor type
CCD
n/a
Sensor size
1/2.33" (~ 6.08 x 4.56 mm)
1/2.3" (~ 6.16 x 4.62 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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| Rollei Powerflex 800 | BenQ GH200 | |
Surface area:
| 27.72 mm² | vs | 28.46 mm² |
Difference: 0.74 mm² (3%)
GH200 sensor is slightly bigger than Powerflex 800 sensor (only 3% difference).
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: 0.03 µm² (2%)
A pixel on BenQ GH200 sensor is approx. 2% bigger than a pixel on Rollei Powerflex 800.
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
Rollei Powerflex 800
BenQ GH200
Total megapixels
Effective megapixels
Optical zoom
Yes
Digital zoom
Yes
ISO sensitivity
Auto, 100, 200, 400, 800,1600
RAW
Manual focus
Normal focus range
30 cm
Macro focus range
1 cm
Focal length (35mm equiv.)
24 - 300 mm
Aperture priority
No
Max. aperture
f3.0 - f5.9
Metering
Centre weighted, Multi-segment
Exposure compensation
±2 EV (in 1/3 EV steps)
Shutter priority
No
Min. shutter speed
Max. shutter speed
Built-in flash
External flash
Viewfinder
None
None
White balance presets
6
Screen size
2.7"
Screen resolution
230,000 dots
Video capture
Max. video resolution
Storage types
SDHC, SDXC, Secure Digital
USB
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Li-Ion
Weight
182 g
Dimensions
102.9 x 58.7 x 21.1 mm
Year
2012
2012
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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 |
Rollei Powerflex 800 diagonal
The diagonal of Powerflex 800 sensor is not 1/2.33 or 0.43" (10.9 mm) as you might expect, but approximately two thirds of
that value - 7.6 mm. If you want to know why, see
sensor sizes.
w = 6.08 mm
h = 4.56 mm
w = 6.08 mm
h = 4.56 mm
| Diagonal = √ | 6.08² + 4.56² | = 7.60 mm |
BenQ GH200 diagonal
The diagonal of GH200 sensor is not 1/2.3 or 0.43" (11 mm) as you might expect, but approximately two thirds of
that value - 7.7 mm. If you want to know why, see
sensor sizes.
w = 6.16 mm
h = 4.62 mm
w = 6.16 mm
h = 4.62 mm
| Diagonal = √ | 6.16² + 4.62² | = 7.70 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
Powerflex 800 sensor area
Width = 6.08 mm
Height = 4.56 mm
Surface area = 6.08 × 4.56 = 27.72 mm²
Height = 4.56 mm
Surface area = 6.08 × 4.56 = 27.72 mm²
GH200 sensor area
Width = 6.16 mm
Height = 4.62 mm
Surface area = 6.16 × 4.62 = 28.46 mm²
Height = 4.62 mm
Surface area = 6.16 × 4.62 = 28.46 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 |
Powerflex 800 pixel pitch
Sensor width = 6.08 mm
Sensor resolution width = 4315 pixels
Sensor resolution width = 4315 pixels
| Pixel pitch = | 6.08 | × 1000 | = 1.41 µm |
| 4315 |
GH200 pixel pitch
Sensor width = 6.16 mm
Sensor resolution width = 4330 pixels
Sensor resolution width = 4330 pixels
| Pixel pitch = | 6.16 | × 1000 | = 1.42 µm |
| 4330 |
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 |
Powerflex 800 pixel area
Pixel pitch = 1.41 µm
Pixel area = 1.41² = 1.99 µm²
Pixel area = 1.41² = 1.99 µm²
GH200 pixel area
Pixel pitch = 1.42 µm
Pixel area = 1.42² = 2.02 µm²
Pixel area = 1.42² = 2.02 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 |
Powerflex 800 pixel density
Sensor resolution width = 4315 pixels
Sensor width = 0.608 cm
Pixel density = (4315 / 0.608)² / 1000000 = 50.37 MP/cm²
Sensor width = 0.608 cm
Pixel density = (4315 / 0.608)² / 1000000 = 50.37 MP/cm²
GH200 pixel density
Sensor resolution width = 4330 pixels
Sensor width = 0.616 cm
Pixel density = (4330 / 0.616)² / 1000000 = 49.41 MP/cm²
Sensor width = 0.616 cm
Pixel density = (4330 / 0.616)² / 1000000 = 49.41 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
Powerflex 800 sensor resolution
Sensor width = 6.08 mm
Sensor height = 4.56 mm
Effective megapixels = 14.00
Resolution horizontal: X × r = 3244 × 1.33 = 4315
Resolution vertical: X = 3244
Sensor resolution = 4315 x 3244
Sensor height = 4.56 mm
Effective megapixels = 14.00
| r = 6.08/4.56 = 1.33 |
|
Resolution vertical: X = 3244
Sensor resolution = 4315 x 3244
GH200 sensor resolution
Sensor width = 6.16 mm
Sensor height = 4.62 mm
Effective megapixels = 14.10
Resolution horizontal: X × r = 3256 × 1.33 = 4330
Resolution vertical: X = 3256
Sensor resolution = 4330 x 3256
Sensor height = 4.62 mm
Effective megapixels = 14.10
| r = 6.16/4.62 = 1.33 |
|
Resolution vertical: X = 3256
Sensor resolution = 4330 x 3256
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 |
Powerflex 800 crop factor
Sensor diagonal in mm = 7.60 mm
| Crop factor = | 43.27 | = 5.69 |
| 7.60 |
GH200 crop factor
Sensor diagonal in mm = 7.70 mm
| Crop factor = | 43.27 | = 5.62 |
| 7.70 |
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).
Powerflex 800 equivalent aperture
Crop factor = 5.69
Aperture = f3.0 - f5.9
35-mm equivalent aperture = (f3.0 - f5.9) × 5.69 = f17.1 - f33.6
Aperture = f3.0 - f5.9
35-mm equivalent aperture = (f3.0 - f5.9) × 5.69 = f17.1 - f33.6
GH200 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
BenQ GH200, take the aperture of the lens
you're using and multiply it with crop factor.
Crop factor for BenQ GH200 is 5.62
Crop factor for BenQ GH200 is 5.62
More comparisons of Rollei Powerflex 800:
- Rollei Powerflex 800 vs. Olympus VR-360
- Rollei Powerflex 800 vs. Ricoh Caplio R6
- Rollei Powerflex 800 vs. Canon PowerShot ELPH 170 IS
- Rollei Powerflex 800 vs. Canon IXUS 132
- Rollei Powerflex 800 vs. Canon Digital IXUS 500
- Rollei Powerflex 800 vs. Canon PowerShot SX150 IS
- Rollei Powerflex 800 vs. Canon PowerShot ELPH 140 IS
- Rollei Powerflex 800 vs. Canon PowerShot SX50 HS
- Rollei Powerflex 800 vs. Canon PowerShot S3 IS
- Rollei Powerflex 800 vs. BenQ GH200
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