Depth of field · APS-C

24 mm f/1.2 depth of field on APS-C

Exactly how much is sharp with a 24 mm lens at f/1.2 on an APS-C camera, from 30.0 cm to 100 m.

24.0 m
Hyperfocal distance
12.0 m
Sharp from (focused at hyperfocal)
37 mm f/1.8
Full-frame equivalent
61°
Diagonal angle of view

Depth of field by subject distance#

24 mm at f/1.2 on APS-C (23.5×15.6 mm), circle of confusion 20 µm. “Background blur” is the size of an out-of-focus light at infinity as a percentage of frame width.

Focus distanceNear limitFar limitTotal DoFFront / behindBackground blur
30.0 cm (0.98 ft)29.7 cm30.3 cm0.7 cm49% / 51%7.40%
50.0 cm (1.64 ft)49.0 cm51.0 cm2.0 cm49% / 51%4.29%
75.0 cm (2.46 ft)72.8 cm77.3 cm4.5 cm48% / 52%2.81%
1.00 m (3.28 ft)96.1 cm1.04 m8.1 cm48% / 52%2.09%
1.50 m (4.92 ft)1.41 m1.60 m18.5 cm47% / 53%1.38%
2.00 m (6.56 ft)1.85 m2.18 m33.2 cm46% / 54%1.03%
3.00 m (9.84 ft)2.67 m3.42 m75.6 cm44% / 56%0.69%
4.00 m (13.1 ft)3.43 m4.79 m1.36 m42% / 58%0.51%
5.00 m (16.4 ft)4.14 m6.31 m2.17 m40% / 60%0.41%
7.00 m (23.0 ft)5.42 m9.87 m4.44 m35% / 65%0.29%
10.0 m (32.8 ft)7.06 m17.1 m10.0 m29% / 71%0.20%
15.0 m (49.2 ft)9.24 m39.9 m30.7 m19% / 81%0.14%
20.0 m (65.6 ft)10.9 m119 m108 m8% / 92%0.10%
30.0 m (98.4 ft)13.3 m∞∞—0.07%
50.0 m (164 ft)16.2 m∞∞—0.04%
100 m (328 ft)19.4 m∞∞—0.02%

Try other settings#

Near limit—
Far limit—
Depth of field—
Hyperfocal distance—
In front / behind—

24 mm at other apertures (subject at 3 m)#

ApertureTotal DoFHyperfocal
f/1.275.6 cm24.0 m
f/1.488.7 cm20.6 m
f/1.81.16 m16.0 m
f/21.30 m14.4 m
f/2.81.89 m10.3 m
f/42.99 m7.22 m
f/5.65.22 m5.17 m
f/815.7 m3.62 m
f/11∞2.64 m
f/16∞1.82 m

Other focal lengths at f/1.2#

Focal lengthSubject atTotal DoF
24 mm3.00 m75.6 cm
35 mm3.00 m35.0 cm
40 mm3.00 m26.7 cm
50 mm3.00 m17.0 cm
85 mm3.00 m5.8 cm

Same lens settings on other formats#

When to use it#

At f/1.2, a 24 mm lens on APS-C is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 75.6 cm of sharp zone; for maximum front-to-back sharpness focus at 24.0 m and everything from 12.0 m to infinity will be acceptably sharp.

See also the f/1.2 aperture guide.

Frequently asked questions#

What is the depth of field of a 24mm lens at f/1.2?

On APS-C, focused at 3 m, it is 75.6 cm; at 1 m it is 8.1 cm.

What is the hyperfocal distance for 24mm f/1.2?

24.0 m (78.8 ft) on APS-C. Everything from 12.0 m to infinity is acceptably sharp.

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