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Sigma fp

Sigma · Leica L · 1.00× crop

The Sigma fp uses the Leica L mount with a 1.00× crop factor (about 36.0 × 24.0 mm sensor), 24.6 megapixels, announced in 2019. Below: equivalent focal lengths, maximum shutter speeds for sharp stars, a hyperfocal distance chart, compatible lenses and how to check the shutter count.

Mount
Leica L
Crop factor
1.00×
Sensor (approx.)
36.0 × 24.0 mm
Resolution
24.6 MP
pixel pitch ≈ 5.93 µm
Announced
2019
Circle of confusion
0.03 mm

Equivalent focal length & field of view

Lens focal lengthFull-frame equivalentDiagonal FOVHorizontal FOV
10 mm10 mm130.4°121.9°
12 mm12 mm122.0°112.6°
14 mm14 mm114.2°104.3°
16 mm16 mm107.0°96.7°
18 mm18 mm100.5°90.0°
20 mm20 mm94.5°84.0°
24 mm24 mm84.1°73.7°
28 mm28 mm75.4°65.5°
35 mm35 mm63.4°54.4°
50 mm50 mm46.8°39.6°
85 mm85 mm28.6°23.9°
135 mm135 mm18.2°15.2°
200 mm200 mm12.3°10.3°
300 mm300 mm8.2°6.9°
400 mm400 mm6.2°5.2°
600 mm600 mm4.1°3.4°

Multiply by the 1.00× crop factor for the full-frame equivalent field of view.

Milky Way exposure: NPF and 500 rule

Focal lengthNPF @ f/1.8NPF @ f/2.8Strict NPF @ f/2.8500 rule
10 mm24.1 s27.6 s14.8 s50.0 s
12 mm20.1 s23.0 s12.4 s41.7 s
14 mm17.2 s19.7 s10.6 s35.7 s
16 mm15.1 s17.2 s9.3 s31.2 s
18 mm13.4 s15.3 s8.3 s27.8 s
20 mm12.0 s13.8 s7.5 s25.0 s
24 mm10.0 s11.5 s6.2 s20.8 s
28 mm8.6 s9.9 s5.4 s17.9 s
35 mm6.9 s7.9 s4.3 s14.3 s
50 mm4.8 s5.5 s3.1 s10.0 s

NPF = (35 × f-number + 30 × pixel pitch) ÷ focal length, with a pixel pitch of 5.93 µm (from 24.6 MP). The strict version (Michaud's detailed NPF for the galactic core) gives pin-point stars at 100% view; the 500 rule is a loose rule of thumb that shows trailing on modern sensors.

Hyperfocal distance chart

Focal lengthf/2.8f/5.6f/8f/11f/16
14 mm2.3 m1.2 m0.8 m0.6 m0.4 m
16 mm3.1 m1.5 m1.1 m0.8 m0.5 m
18 mm3.9 m1.9 m1.4 m1.0 m0.7 m
20 mm4.8 m2.4 m1.7 m1.2 m0.9 m
24 mm6.9 m3.5 m2.4 m1.8 m1.2 m
28 mm9.4 m4.7 m3.3 m2.4 m1.7 m
35 mm15 m7.3 m5.1 m3.7 m2.6 m
50 mm30 m15 m10 m7.6 m5.3 m

Focus at the hyperfocal distance and everything from half that distance to infinity is acceptably sharp (circle of confusion 0.03 mm). Use the hyperfocal calculator for other settings.

Maximum print size

Print resolutionInchesCentimeters
150 ppi40.5 × 27.0 in103 × 69 cm
200 ppi30.4 × 20.2 in77 × 51 cm
240 ppi25.3 × 16.9 in64 × 43 cm
300 ppi20.2 × 13.5 in51 × 34 cm

300 ppi suits close viewing; 150–200 ppi is plenty for large prints viewed from a distance.

Compatible lenses (64 in our database)

LensFocal lengthMax apertureMount
Sigma 10-18mm F2.8 DC DN | Contemporary 02310–18 mmf/2.8Sony E, Fujifilm X
Sigma 14-24mm F2.8 DG DN | Art 01914–24 mmf/2.8Sony E, Leica L
Sigma 16mm f/1.4 DC DN Contemporary16 mmf/1.4Micro 4/3 System, Sony E
Sigma 16-28mm F2.8 DG DN | Contemporary 02216–28 mmf/2.8Sony E, Leica L
Sigma 16-300mm F3.5-6.7 DC OS | C16–300 mmf/3.5Fujifilm X, Canon RF
Sigma 17mm F4 DG DN | Contemporary 02317 mmf/4Leica L, Sony E
Sigma 18-50mm F2.8 DC DN | Contemporary 02118–50 mmf/2.8Sony E, Leica L
Sigma 20mm F2 DG DN | Contemporary 02220 mmf/2Sony E, Leica L
Sigma 20-200mm F3.5-6.3 DG | Contemporary20–200 mmf/3.5Sony E, Leica L
Sigma 24mm F2 DG DN | Contemporary 02124 mmf/2Sony E, Leica L
Sigma 24-70mm F2.8 DG DN | Art 01924–70 mmf/2.8Sony E, Leica L
Sigma 24-70mm F2.8 DG DN II | Art 02424–70 mmf/2.8Leica L, Sony E
Sigma 24mm F3.5 DG DN | Contemporary 02124 mmf/3.5Leica L, Sony E
Sigma 24mm f/1.4 DG HSM | A24 mmf/1.4Nikon F AF, Sigma SA
Sigma 28-70mm F2.8 DG DN | Contemporary 02128–70 mmf/2.8Sony E, Leica L
Sigma 28mm F1.4 DG HSM | Art28 mmf/1.4Nikon F AF, Leica L
Sigma 30mm f/1.4 DC DN30 mmf/1.4Sony E, Micro 4/3 System
Sigma 35mm F2 DG DN | Contemporary 02035 mmf/2Sony E, Leica L
Sigma 40mm F1.4 DG HSM | Art40 mmf/1.4Canon EF, Leica L
Sigma 45mm F2.8 DG DN | Contemporary 01945 mmf/2.8Sony E, Leica L
Sigma 56 mm F1.4 DC DN | C 01856 mmf/1.4Sony E, Fujifilm X
Sigma 65mm F2 DG DN | Contemporary 02065 mmf/2Sony E, Leica L
Sigma 70mm f/2.8 DG Macro | Art 01870 mmf/2.8Canon EF, Sony E
Sigma 85mm F1.4 DG DN | Art 02085 mmf/1.4Sony E, Leica L
Sigma 90mm F2.8 DG DN | Contemporary 02190 mmf/2.8Leica L, Sony E
Sigma 105 mm F1.4 DG HSM Art105 mmf/1.4Sony E, Canon EF
Sigma 105mm F2.8 DG DN MACRO | Art 020105 mmf/2.8Sony E, Leica L
Venus Laowa 9mm f/2.8 Zero-D9 mmf/2.8Fujifilm X, Sony E
Venus Laowa 9mm f/5.6 FF RL9 mmf/5.6Nikon Z, Sony E
Venus Laowa 10mm f/2.8 Zero-D FF10 mmf/2.8Sony E, Nikon Z
AstrHori 10mm f/810 mmf/8Fujifilm X, Sony E
Panasonic Lumix S 14-28mm f/4-5.6 Macro14–28 mmf/4Leica L
Venus Laowa 15mm f/2.0 Zero-D15 mmf/2Canon RF, Leica L
Panasonic Lumix S Pro 16-35mm f/416–35 mmf/4Leica L
Viltrox AF 16mm F1.8 FE/L/Z16 mmf/16Sony E, Leica L
Panasonic Lumix S 18-40mm f/4.5-6.318–40 mmf/4.5Leica L
7Artisans 18mm f/5.6 Full Frame18 mmf/5.6Leica L, Nikon Z
7Artisans 18mm f/6.3 II18 mmf/6.3Fujifilm X, Sony E
Panasonic Lumix S 20-60mm f/3.5-5.620–60 mmf/3.5Leica L
TTArtisan APS-C 23mm F1.423 mmf/1.4Sony E, Fujifilm X

Native and adapter-free compatible lenses from the Lensfun database. Third-party and adapted lenses may also work.

How to check the Sigma fp shutter count

Not every maker writes a shutter count into image files. Try `exiftool -a -G1 -s image` on an unedited original and look for a tag containing "Shutter" or "Count".

ExifTool tag: (varies). Always test an original, unedited file straight from the card.

Where to buy

Compare new and used prices at these retailers:

B&H PhotoAmazonKEH (used)MPB (used)

Other Leica L cameras

FAQ

What is the crop factor of the Sigma fp?
1.00×. A 24 mm lens frames like a 24 mm lens on full frame.
What shutter speed should I use for the Milky Way with the Sigma fp?
With a 10 mm lens at f/2.8, about 28 seconds keeps stars sharp (NPF rule).
How do I check the shutter count on the Sigma fp?
Not every maker writes a shutter count into image files. Try `exiftool -a -G1 -s image` on an unedited original and look for a tag containing "Shutter" or "Count".
Which lenses fit the Sigma fp?
Lenses for the Leica L mount and compatible mounts (Leica M) — 64 are listed above.