Sigma fp vs. Sigma DP1 Merrill
Comparison
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Sigma fp | Sigma DP1 Merrill | ||||
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Megapixels
24.60
15.40
Max. image resolution
6000 x 4000
Note: Sigma DP1 Merrill uses Foveon X3 image sensor, which is a new type of sensor that
has 3 layers of photoelements stacked together in 1 pixel location. Traditional
CCD/CMOS sensors have 1 pixel for 1 color, whereas Foveon sensor captures all
3 colors (blue, green, and red) at every pixel.
Sensor
Sensor type
CMOS
Foveon
Sensor size
35.9 x 23.9 mm
24 x 16 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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2.23 | : | 1 |
(ratio) | ||
Sigma fp | Sigma DP1 Merrill |
Surface area:
858.01 mm² | vs | 384.00 mm² |
Difference: 474.01 mm² (123%)
fp sensor is approx. 2.23x bigger than DP1 Merrill sensor.
Note: You are comparing sensors of very different generations.
There is a gap of 7 years between Sigma fp (2019) and Sigma DP1 Merrill (2012).
Seven 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: 10.03 µm² (40%)
A pixel on Sigma fp sensor is approx. 40% bigger than a pixel on Sigma DP1 Merrill.
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
Sigma fp
Sigma DP1 Merrill
Total megapixels
25.30
15.40
Effective megapixels
24.60
15.40
Optical zoom
Digital zoom
ISO sensitivity
Auto, 100-25600 (expandable to 6-102400)
RAW
Manual focus
Normal focus range
Macro focus range
Focal length (35mm equiv.)
Aperture priority
Yes
Max. aperture
f2.8
Metering
Multi, Center-weighted, Spot
Exposure compensation
±5 EV (in 1/3 EV steps)
Shutter priority
Yes
Min. shutter speed
30 sec
Max. shutter speed
1/8000 sec
Built-in flash
External flash
Viewfinder
None
None
White balance presets
6
Screen size
3.2"
Screen resolution
2,100,000 dots
920,000 dots
Video capture
Max. video resolution
3840x2160 (30p/25p/24p)
Storage types
SD/SDHC/SDXC
USB
USB 3.0 (5 GBit/sec)
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
BP-51 lithium-ion battery
Weight
422 g
330 g
Dimensions
112.6 x 69.9 x 45.3 mm
122 x 67 x 64 mm
Year
2019
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 |
Sigma fp diagonal
w = 35.90 mm
h = 23.90 mm
h = 23.90 mm
Diagonal = √ | 35.90² + 23.90² | = 43.13 mm |
Sigma DP1 Merrill diagonal
w = 24.00 mm
h = 16.00 mm
h = 16.00 mm
Diagonal = √ | 24.00² + 16.00² | = 28.84 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
fp sensor area
Width = 35.90 mm
Height = 23.90 mm
Surface area = 35.90 × 23.90 = 858.01 mm²
Height = 23.90 mm
Surface area = 35.90 × 23.90 = 858.01 mm²
DP1 Merrill sensor area
Width = 24.00 mm
Height = 16.00 mm
Surface area = 24.00 × 16.00 = 384.00 mm²
Height = 16.00 mm
Surface area = 24.00 × 16.00 = 384.00 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 |
fp pixel pitch
Sensor width = 35.90 mm
Sensor resolution width = 6075 pixels
Sensor resolution width = 6075 pixels
Pixel pitch = | 35.90 | × 1000 | = 5.91 µm |
6075 |
DP1 Merrill pixel pitch
Sensor width = 24.00 mm
Sensor resolution width = 4806 pixels
Sensor resolution width = 4806 pixels
Pixel pitch = | 24.00 | × 1000 | = 4.99 µm |
4806 |
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 |
fp pixel area
Pixel pitch = 5.91 µm
Pixel area = 5.91² = 34.93 µm²
Pixel area = 5.91² = 34.93 µm²
DP1 Merrill pixel area
Pixel pitch = 4.99 µm
Pixel area = 4.99² = 24.9 µm²
Pixel area = 4.99² = 24.9 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 |
fp pixel density
Sensor resolution width = 6075 pixels
Sensor width = 3.59 cm
Pixel density = (6075 / 3.59)² / 1000000 = 2.86 MP/cm²
Sensor width = 3.59 cm
Pixel density = (6075 / 3.59)² / 1000000 = 2.86 MP/cm²
DP1 Merrill pixel density
Sensor resolution width = 4806 pixels
Sensor width = 2.4 cm
Pixel density = (4806 / 2.4)² / 1000000 = 4.01 MP/cm²
Sensor width = 2.4 cm
Pixel density = (4806 / 2.4)² / 1000000 = 4.01 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 → |
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Resolution horizontal: X × r
Resolution vertical: X
fp sensor resolution
Sensor width = 35.90 mm
Sensor height = 23.90 mm
Effective megapixels = 24.60
Resolution horizontal: X × r = 4050 × 1.5 = 6075
Resolution vertical: X = 4050
Sensor resolution = 6075 x 4050
Sensor height = 23.90 mm
Effective megapixels = 24.60
r = 35.90/23.90 = 1.5 |
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Resolution vertical: X = 4050
Sensor resolution = 6075 x 4050
DP1 Merrill sensor resolution
Sensor width = 24.00 mm
Sensor height = 16.00 mm
Effective megapixels = 15.40
Resolution horizontal: X × r = 3204 × 1.5 = 4806
Resolution vertical: X = 3204
Sensor resolution = 4806 x 3204
Sensor height = 16.00 mm
Effective megapixels = 15.40
r = 24.00/16.00 = 1.5 |
|
Resolution vertical: X = 3204
Sensor resolution = 4806 x 3204
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 |
fp crop factor
Sensor diagonal in mm = 43.13 mm
Crop factor = | 43.27 | = 1 |
43.13 |
DP1 Merrill crop factor
Sensor diagonal in mm = 28.84 mm
Crop factor = | 43.27 | = 1.5 |
28.84 |
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).
fp 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
Sigma fp, take the aperture of the lens
you're using and multiply it with crop factor.
Since crop factor for Sigma fp is 1, the equivalent aperture is aperture.
Since crop factor for Sigma fp is 1, the equivalent aperture is aperture.
DP1 Merrill equivalent aperture
Crop factor = 1.5
Aperture = f2.8
35-mm equivalent aperture = (f2.8) × 1.5 = f4.2
Aperture = f2.8
35-mm equivalent aperture = (f2.8) × 1.5 = f4.2
More comparisons of Sigma fp:
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