Depth of field · APS-C

24 mm f/2.8 depth of field on APS-C

Exactly how much is sharp with a 24 mm lens at f/2.8 on an APS-C camera, from 30.0 cm to 100 m.

10.3 m
Hyperfocal distance
5.15 m
Sharp from (focused at hyperfocal)
37 mm f/4.3
Full-frame equivalent
61°
Diagonal angle of view

Depth of field by subject distance#

24 mm at f/2.8 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)29.2 cm30.8 cm1.6 cm49% / 51%3.17%
50.0 cm (1.64 ft)47.8 cm52.4 cm4.6 cm48% / 52%1.84%
75.0 cm (2.46 ft)70.1 cm80.7 cm10.6 cm46% / 54%1.21%
1.00 m (3.28 ft)91.3 cm1.10 m19.2 cm45% / 55%0.90%
1.50 m (4.92 ft)1.31 m1.75 m44.0 cm43% / 57%0.59%
2.00 m (6.56 ft)1.68 m2.48 m79.8 cm40% / 60%0.44%
3.00 m (9.84 ft)2.33 m4.22 m1.89 m36% / 64%0.29%
4.00 m (13.1 ft)2.88 m6.52 m3.64 m31% / 69%0.22%
5.00 m (16.4 ft)3.37 m9.69 m6.32 m26% / 74%0.18%
7.00 m (23.0 ft)4.17 m21.8 m17.6 m16% / 84%0.13%
10.0 m (32.8 ft)5.08 m332 m327 m2% / 98%0.09%
15.0 m (49.2 ft)6.11 m∞∞—0.06%
20.0 m (65.6 ft)6.80 m∞∞—0.04%
30.0 m (98.4 ft)7.66 m∞∞—0.03%
50.0 m (164 ft)8.53 m∞∞—0.02%
100 m (328 ft)9.33 m∞∞—0.01%

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/2.8#

Focal lengthSubject atTotal DoF
14 mm3.00 m18.8 m
16 mm3.00 m6.82 m
20 mm3.00 m3.03 m
24 mm3.00 m1.89 m
28 mm3.00 m1.33 m
35 mm3.00 m82.8 cm
40 mm3.00 m62.8 cm
50 mm3.00 m39.8 cm
85 mm3.00 m13.6 cm
105 mm3.00 m8.8 cm
135 mm3.00 m5.3 cm
200 mm10.0 m27.4 cm
300 mm10.0 m12.1 cm
400 mm10.0 m6.7 cm

Same lens settings on other formats#

24 mm f/2.8 on Full frame24 mm f/2.8 on Micro Four Thirds

When to use it#

At f/2.8, a 24 mm lens on APS-C is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 1.89 m of sharp zone; for maximum front-to-back sharpness focus at 10.3 m and everything from 5.15 m to infinity will be acceptably sharp.

See also the f/2.8 aperture guide.

Frequently asked questions#

What is the depth of field of a 24mm lens at f/2.8?

On APS-C, focused at 3 m, it is 1.89 m; at 1 m it is 19.2 cm.

What is the hyperfocal distance for 24mm f/2.8?

10.3 m (33.8 ft) on APS-C. Everything from 5.15 m to infinity is acceptably sharp.

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