Sigma 30mm F1.4 DC DN Depth of Field Calculator & DoF Table

Key numbers

Mount / system: Third-Party (Various Mounts)
Sensor: APS-C, 23.5 × 15.6mm
Focal length: 30mm (about 46mm full-frame equivalent, 1.53× crop)
Aperture: f/1.4 to f/16
DoF at 3 m, 30mm, f/1.4: 2.76–3.29 m (≈ 52 cm deep)
Hyperfocal distance (30mm, f/8): 6.01 m

Depth of field table

Distances are measured from the sensor plane. Each cell shows the near and far limit of acceptable sharpness in metres (∞ = to infinity). Circle of confusion = sensor diagonal / 1500.

Aperture	Hyperfocal	1 m	2 m	3 m	5 m	10 m
f/1.4	34.2 m	0.97–1.03	1.89–2.12	2.76–3.29	4.37–5.85	7.74–14.1
f/1.8	26.6 m	0.96–1.04	1.86–2.16	2.70–3.38	4.21–6.15	7.28–16.0
f/2	24.0 m	0.96–1.04	1.85–2.18	2.67–3.42	4.14–6.31	7.06–17.1
f/2.8	17.1 m	0.95–1.06	1.79–2.26	2.56–3.63	3.88–7.04	6.32–23.9
f/4	12.0 m	0.93–1.09	1.72–2.39	2.40–3.99	3.54–8.54	5.46–59.2
f/5.6	8.58 m	0.90–1.13	1.63–2.60	2.23–4.59	3.17–11.9	4.62–∞
f/8	6.01 m	0.86–1.19	1.51–2.97	2.01–5.93	2.74–28.8	3.76–∞
f/11	4.38 m	0.82–1.28	1.38–3.63	1.79–9.31	2.34–∞	3.05–∞
f/16	3.02 m	0.76–1.47	1.21–5.75	1.51–177	1.89–∞	2.33–∞

FAQ

What is the depth of field of the Sigma 30mm F1.4 DC DN at f/1.4 and 3 m?

At 30mm, f/1.4 and focus at 3 m, acceptable sharpness runs from 2.76 to 3.29 m — about 52 cm in total.

What is the hyperfocal distance of the Sigma 30mm F1.4 DC DN?

At 30mm and f/8 on a APS-C sensor the hyperfocal distance is about 6.01 m. Focus there and everything from 3.01 m to infinity is sharp.

How do I get more background blur with the Sigma 30mm F1.4 DC DN?

Open the aperture to f/1.4, move closer to your subject and increase the distance between subject and background. You can check the result in the calculator above.

Sigma 30mm F1.4 DC DN — depth of field calculator

Key numbers

Depth of field table

FAQ

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