Sigma fp vs. Nikon Z6

Comparison

change cameras »
fp image
vs
Z6 image
Sigma fp Nikon Z6
check price » check price »
Megapixels
24.60
24.50
Max. image resolution
6000 x 4000
6048 x 4024

Sensor

Sensor type
CMOS
CMOS
Sensor size
35.9 x 23.9 mm
35.9 x 23.9 mm
Sensor resolution
6075 x 4050
6062 x 4041
Diagonal
43.13 mm
43.13 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 »

Actual sensor size

Note: Actual size is set to screen → change »
vs
1 : 1
(ratio)
Sigma fp Nikon Z6
Surface area:
858.01 mm² vs 858.01 mm²
Difference: 0 mm² (0%)
fp and Z6 sensors are the same size.
Pixel pitch
5.91 µm
5.92 µm
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.
Difference: 0.01 µm (0.2%)
Pixel pitch of Z6 is approx. 0.2% higher than pixel pitch of fp.
Pixel area
34.93 µm²
35.05 µm²
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.
Relative pixel sizes:
vs
Pixel area difference: 0.12 µm² (0.3%)
A pixel on Nikon Z6 sensor is approx. 0.3% bigger than a pixel on Sigma fp.
Pixel density
2.86 MP/cm²
2.85 MP/cm²
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.
Difference: 0.0099999999999998 µm (0.4%)
Sigma fp has approx. 0.4% higher pixel density than Nikon Z6.
To learn about the accuracy of these numbers, click here.



Specs

Sigma fp
Nikon Z6
Crop factor
1
1
Total megapixels
25.30
25.28
Effective megapixels
24.60
24.50
Optical zoom
 
Digital zoom
Yes
ISO sensitivity
Auto, 100-25600 (expandable to 6-102400)
Auto, 100-51200 (extends to 50-204800)
RAW
Manual focus
Normal focus range
Macro focus range
Focal length (35mm equiv.)
Aperture priority
Yes
Yes
Max. aperture
Max. aperture (35mm equiv.)
n/a
n/a
Metering
Multi, Center-weighted, Spot
Multi, Center-weighted, Highlight-weighted, Spot
Exposure compensation
±5 EV (in 1/3 EV steps)
±5 EV (in 1/3 EV, 1/2 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
30 sec
30 sec
Max. shutter speed
1/8000 sec
1/8000 sec
Built-in flash
External flash
Viewfinder
None
Electronic
White balance presets
6
12
Screen size
3.2"
3.2"
Screen resolution
2,100,000 dots
2,100,000 dots
Video capture
Max. video resolution
3840x2160 (30p/​25p/​24p)
3840x2160 (30p/25p/24p)
Storage types
SD/SDHC/SDXC
XQD
USB
USB 3.0 (5 GBit/sec)
USB 3.0 (5 GBit/sec)
HDMI
Wireless
GPS
Battery
BP-51 lithium-ion battery
EN-EL15b rechargeable Li-ion battery
Weight
422 g
585 g
Dimensions
112.6 x 69.9 x 45.3 mm
134 x 100.5 x 67.5 mm
Year
2019
2018




Choose cameras to compare

vs

Diagonal

Diagonal is calculated by the use of Pythagorean theorem:
Diagonal =  w² + h²
where w = sensor width and h = sensor height

Sigma fp diagonal

w = 35.90 mm
h = 23.90 mm
Diagonal =  35.90² + 23.90²   = 43.13 mm

Nikon Z6 diagonal

w = 35.90 mm
h = 23.90 mm
Diagonal =  35.90² + 23.90²   = 43.13 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

Z6 sensor area

Width = 35.90 mm
Height = 23.90 mm

Surface area = 35.90 × 23.90 = 858.01 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
Pixel pitch =   35.90  × 1000  = 5.91 µm
6075

Z6 pixel pitch

Sensor width = 35.90 mm
Sensor resolution width = 6062 pixels
Pixel pitch =   35.90  × 1000  = 5.92 µm
6062


Pixel area

The area of one pixel can be calculated by simply squaring the pixel pitch:
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

Z6 pixel area

Pixel pitch = 5.92 µm

Pixel area = 5.92² = 35.05 µm²


Pixel density

Pixel density can be calculated with the following 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

Z6 pixel density

Sensor resolution width = 6062 pixels
Sensor width = 3.59 cm

Pixel density = (6062 / 3.59)² / 1000000 = 2.85 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:
(X × r) × X = effective megapixels × 1000000    →   
X =  effective megapixels × 1000000
r
3. To get sensor resolution we then multiply X with the corresponding ratio:

Resolution horizontal: X × r
Resolution vertical: X

fp sensor resolution

Sensor width = 35.90 mm
Sensor height = 23.90 mm
Effective megapixels = 24.60
r = 35.90/23.90 = 1.5
X =  24.60 × 1000000  = 4050
1.5
Resolution horizontal: X × r = 4050 × 1.5 = 6075
Resolution vertical: X = 4050

Sensor resolution = 6075 x 4050

Z6 sensor resolution

Sensor width = 35.90 mm
Sensor height = 23.90 mm
Effective megapixels = 24.50
r = 35.90/23.90 = 1.5
X =  24.50 × 1000000  = 4041
1.5
Resolution horizontal: X × r = 4041 × 1.5 = 6062
Resolution vertical: X = 4041

Sensor resolution = 6062 x 4041


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

Z6 crop factor

Sensor diagonal in mm = 43.13 mm
Crop factor =   43.27  = 1
43.13

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.

Z6 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 Nikon Z6, take the aperture of the lens you're using and multiply it with crop factor.

Since crop factor for Nikon Z6 is 1, the equivalent aperture is aperture.

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.