Rollei Prego dp6300 vs. Rollei Powerflex 800
Comparison
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| Rollei Prego dp6300 | Rollei Powerflex 800 | ||||
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Megapixels
6.30
14.00
Max. image resolution
2816 x 2112
4320 x 3240
Sensor
Sensor type
CCD
CCD
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
1/2.33" (~ 6.08 x 4.56 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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| 1.37 | : | 1 |
| (ratio) | ||
| Rollei Prego dp6300 | Rollei Powerflex 800 | |
Surface area:
| 37.90 mm² | vs | 27.72 mm² |
Difference: 10.18 mm² (37%)
Prego dp6300 sensor is approx. 1.37x bigger than Powerflex 800 sensor.
Note: You are comparing sensors of very different generations.
There is a gap of 8 years between Rollei Prego dp6300 (2004) and Rollei Powerflex 800 (2012).
Eight years is a lot of time in terms
of technology, meaning newer sensors are overall much more
efficient than the older ones.
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: 4.06 µm² (204%)
A pixel on Rollei Prego dp6300 sensor is approx. 204% 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 Prego dp6300
Rollei Powerflex 800
Total megapixels
Effective megapixels
Optical zoom
Yes
Yes
Digital zoom
Yes
Yes
ISO sensitivity
Auto, 50, 100, 200
Auto, 100, 200, 400, 800,1600
RAW
Manual focus
Normal focus range
80 cm
30 cm
Macro focus range
9 cm
1 cm
Focal length (35mm equiv.)
35 - 105 mm
24 - 300 mm
Aperture priority
Yes
No
Max. aperture
f2.8 - f4.7
f3.0 - f5.9
Metering
Centre weighted
Centre weighted, Multi-segment
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
Yes
No
Min. shutter speed
8 sec
Max. shutter speed
1/1500 sec
Built-in flash
External flash
Viewfinder
Optical
None
White balance presets
6
6
Screen size
2"
2.7"
Screen resolution
230,000 dots
Video capture
Max. video resolution
Storage types
Secure Digital
SDHC, SDXC, Secure Digital
USB
USB 1.1
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Li-Ion
Li-Ion
Weight
180 g
182 g
Dimensions
94 x 63 x 35 mm
102.9 x 58.7 x 21.1 mm
Year
2004
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 Prego dp6300 diagonal
The diagonal of Prego dp6300 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 |
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 |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
Prego dp6300 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
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
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 |
Prego dp6300 pixel pitch
Sensor width = 7.11 mm
Sensor resolution width = 2894 pixels
Sensor resolution width = 2894 pixels
| Pixel pitch = | 7.11 | × 1000 | = 2.46 µm |
| 2894 |
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 |
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 |
Prego dp6300 pixel area
Pixel pitch = 2.46 µm
Pixel area = 2.46² = 6.05 µm²
Pixel area = 2.46² = 6.05 µm²
Powerflex 800 pixel area
Pixel pitch = 1.41 µm
Pixel area = 1.41² = 1.99 µm²
Pixel area = 1.41² = 1.99 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 |
Prego dp6300 pixel density
Sensor resolution width = 2894 pixels
Sensor width = 0.711 cm
Pixel density = (2894 / 0.711)² / 1000000 = 16.57 MP/cm²
Sensor width = 0.711 cm
Pixel density = (2894 / 0.711)² / 1000000 = 16.57 MP/cm²
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
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
Prego dp6300 sensor resolution
Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 6.30
Resolution horizontal: X × r = 2176 × 1.33 = 2894
Resolution vertical: X = 2176
Sensor resolution = 2894 x 2176
Sensor height = 5.33 mm
Effective megapixels = 6.30
| r = 7.11/5.33 = 1.33 |
|
Resolution vertical: X = 2176
Sensor resolution = 2894 x 2176
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
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 |
Prego dp6300 crop factor
Sensor diagonal in mm = 8.89 mm
| Crop factor = | 43.27 | = 4.87 |
| 8.89 |
Powerflex 800 crop factor
Sensor diagonal in mm = 7.60 mm
| Crop factor = | 43.27 | = 5.69 |
| 7.60 |
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).
Prego dp6300 equivalent aperture
Crop factor = 4.87
Aperture = f2.8 - f4.7
35-mm equivalent aperture = (f2.8 - f4.7) × 4.87 = f13.6 - f22.9
Aperture = f2.8 - f4.7
35-mm equivalent aperture = (f2.8 - f4.7) × 4.87 = f13.6 - f22.9
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
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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.