Mirrorless

Sigma sd Quattro H

The Sigma sd Quattro H is a mirrorless with a APS-H sensor measuring 26.6 × 18.1 mm. Its crop factor is 1.35×, so a 50 mm lens frames like 67 mm on full frame. Every number below is calculated for this exact sensor.

APS-H1.35× cropSigma SA
1.35×
Crop factor
26.6×18.1 mm
Sensor size
480 mm²
Area · 56% of full frame

Specifications#

Brand
Sigma
Model
sd Quattro H
Camera type
Mirrorless
Lens mount
Sigma SA
Sensor size
26.6 × 18.1 mm (APS-H)
Crop factor
1.35×

Specifications merged from Wikidata, Lensfun and openMVG. Spot an error? Tell us.

Sensor size compared#

Medium format 44 × 33 mmFull frame (35 mm)Sigma sd Quattro HAPS-CFour Thirds / Micro Four Thirds1" (one-inch) sensor
The Sigma sd Quattro H sensor (highlighted) drawn to scale against common formats. Its area is 56% of a full-frame sensor, which collects about 0.8 stops less total light at the same exposure.

Focal length equivalents & field of view#

Multiply any focal length by 1.35 to get the full-frame field of view. Angles are for a rectilinear lens focused at infinity.

Lens on this cameraFull-frame equivalentHorizontalVerticalDiagonal
8 mm11 mm117.9°96.9°127.1°
10 mm13 mm106.1°84.1°116.2°
12 mm16 mm95.9°73.9°106.5°
14 mm19 mm87.1°65.6°97.9°
16 mm22 mm79.5°58.9°90.3°
18 mm24 mm72.9°53.3°83.5°
20 mm27 mm67.2°48.6°77.6°
24 mm32 mm58.0°41.2°67.6°
28 mm38 mm50.8°35.7°59.7°
35 mm47 mm41.6°28.9°49.3°
40 mm54 mm36.8°25.4°43.8°
50 mm67 mm29.8°20.5°35.6°
56 mm75 mm26.7°18.3°32.0°
70 mm94 mm21.5°14.7°25.9°
85 mm114 mm17.8°12.1°21.4°
100 mm135 mm15.2°10.3°18.3°
135 mm182 mm11.3°7.6°13.6°
200 mm269 mm7.6°5.2°9.2°
300 mm404 mm5.1°3.4°6.1°
400 mm538 mm3.8°2.6°4.6°
600 mm808 mm2.5°1.7°3.1°
800 mm1077 mm1.9°1.3°2.3°

Depth of field table#

Total depth of field at each subject distance, using a circle of confusion of 22.3 µm (the 0.030 mm full-frame standard scaled by the crop factor).

FocalAperture50.0 cm1.00 m2.00 m3.00 m5.00 m10.0 mHyperfocal
16 mmf/1.87.6 cm31.6 cm1.38 m3.59 m20.0 m∞6.40 m
16 mmf/2.812.0 cm50.9 cm2.53 m9.27 m∞∞4.12 m
16 mmf/417.3 cm77.7 cm5.29 m∞∞∞2.89 m
16 mmf/838.0 cm2.59 m∞∞∞∞1.45 m
32 mmf/1.81.8 cm7.6 cm31.0 cm70.7 cm2.02 m9.22 m25.6 m
32 mmf/2.82.9 cm11.8 cm48.7 cm1.12 m3.33 m19.3 m16.4 m
32 mmf/44.1 cm17.0 cm70.6 cm1.66 m5.32 m70.3 m11.5 m
32 mmf/88.2 cm34.7 cm1.55 m4.23 m34.4 m∞5.77 m
54 mmf/1.80.6 cm2.6 cm10.7 cm24.4 cm68.4 cm2.79 m72.7 m
54 mmf/2.81.0 cm4.1 cm16.7 cm38.0 cm1.07 m4.46 m46.8 m
54 mmf/41.4 cm5.8 cm23.9 cm54.5 cm1.55 m6.70 m32.8 m
54 mmf/82.7 cm11.6 cm48.3 cm1.12 m3.33 m19.3 m16.4 m
90 mmf/1.80.2 cm0.9 cm3.8 cm8.7 cm24.3 cm98.4 cm202 m
90 mmf/2.80.3 cm1.4 cm5.9 cm13.5 cm37.9 cm1.54 m130 m
90 mmf/40.5 cm2.0 cm8.4 cm19.2 cm54.2 cm2.21 m90.9 m
90 mmf/80.9 cm4.0 cm16.8 cm38.6 cm1.09 m4.58 m45.5 m

Equivalent aperture#

Exposure is identical at the same f-number on any format; equivalence only describes depth of field and total light.

Aperture on this cameraFull-frame equivalent (depth of field)Hyperfocal at 32 mm
f/1.2f/1.638.3 m
f/1.4f/1.932.8 m
f/1.8f/2.425.6 m
f/2f/2.723.0 m
f/2.8f/3.816.4 m
f/4f/5.411.5 m
f/5.6f/7.58.24 m
f/8f/10.85.77 m

Night-sky exposure limits#

Longest exposure before stars trail. The NPF rule accounts for pixel pitch and is stricter than the classic 500 rule — use it for pin-sharp stars on high-resolution sensors. (NPF needs a known resolution and is omitted here.)

Focal length500 rule
10 mm (13 mm eq.)37.1 s
15 mm (20 mm eq.)24.8 s
18 mm (24 mm eq.)20.6 s
26 mm (35 mm eq.)14.3 s
37 mm (50 mm eq.)10.0 s

Open the NPF / 500 rule calculator →

Handheld shutter speed guide#

The reciprocal rule uses the equivalent focal length. High-resolution sensors may need one stop faster than this for pixel-sharp results.

Focal lengthNo stabilisation (1/equiv. focal)With 3-stop ISWith 5-stop IBIS
18 mm1/25 s0.3 s1.3 s
37 mm1/50 s1/6 s0.6 s
74 mm1/100 s1/13 s0.3 s
149 mm1/200 s1/25 s1/6 s

Lenses for the Sigma sd Quattro H#

Native Sigma SA lenses in our database (74 total). Also adaptable: T-mount (T2), M39 / LTM (Leica thread), M42 screw mount, Deckel (DKL).

Similar cameras#

Other APS-H cameras from around the same time.

Frequently asked questions#

What is the crop factor of the Sigma sd Quattro H?

The Sigma sd Quattro H has a crop factor of 1.35× relative to 35 mm full frame (diagonal 32.1 mm vs 43.3 mm).

What size is the Sigma sd Quattro H sensor?

26.6 × 18.1 mm (APS-H), an area of 480 mm² — 56% of full frame.

Is the Sigma sd Quattro H full frame?

No — its sensor is APS-H, which is 1.8× smaller in area than full frame.

What lens mount does the Sigma sd Quattro H use?

The Sigma sd Quattro H uses the Sigma SA (flange distance 44.00 mm).

How long can I expose the night sky with the Sigma sd Quattro H?

With a 15 mm lens (20 mm equivalent) the 500 rule gives 25 s.

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources