Depth of field · APS-C

85 mm f/1.4 depth of field on APS-C

Exactly how much is sharp with a 85 mm lens at f/1.4 on an APS-C camera, from 30.0 cm to 100 m.

258 m
Hyperfocal distance
129 m
Sharp from (focused at hyperfocal)
130 mm f/2.1
Full-frame equivalent
19°
Diagonal angle of view

Depth of field by subject distance#

85 mm at f/1.4 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)30.0 cm30.0 cm0.0 cm50% / 50%102.14%
50.0 cm (1.64 ft)49.9 cm50.1 cm0.2 cm50% / 50%52.92%
75.0 cm (2.46 ft)74.8 cm75.2 cm0.4 cm50% / 50%33.02%
1.00 m (3.28 ft)99.6 cm1.00 m0.7 cm50% / 50%24.00%
1.50 m (4.92 ft)1.49 m1.51 m1.6 cm50% / 50%15.52%
2.00 m (6.56 ft)1.99 m2.01 m3.0 cm50% / 50%11.47%
3.00 m (9.84 ft)2.97 m3.03 m6.8 cm49% / 51%7.53%
4.00 m (13.1 ft)3.94 m4.06 m12.1 cm49% / 51%5.61%
5.00 m (16.4 ft)4.91 m5.10 m19.1 cm49% / 51%4.47%
7.00 m (23.0 ft)6.82 m7.19 m37.5 cm49% / 51%3.18%
10.0 m (32.8 ft)9.63 m10.4 m77.0 cm48% / 52%2.21%
15.0 m (49.2 ft)14.2 m15.9 m1.74 m47% / 53%1.47%
20.0 m (65.6 ft)18.6 m21.7 m3.11 m46% / 54%1.10%
30.0 m (98.4 ft)26.9 m33.9 m7.05 m44% / 56%0.73%
50.0 m (164 ft)41.9 m62.0 m20.1 m40% / 60%0.44%
100 m (328 ft)72.1 m163 m91.1 m31% / 69%0.22%

Try other settings#

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

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

ApertureTotal DoFHyperfocal
f/1.25.8 cm301 m
f/1.46.8 cm258 m
f/1.88.7 cm201 m
f/29.7 cm181 m
f/2.813.6 cm129 m
f/419.4 cm90.4 m
f/5.627.2 cm64.6 m
f/838.9 cm45.2 m
f/1153.7 cm32.9 m
f/1678.8 cm22.7 m

Other focal lengths at f/1.4#

Focal lengthSubject atTotal DoF
16 mm3.00 m2.19 m
20 mm3.00 m1.31 m
24 mm3.00 m88.7 cm
28 mm3.00 m64.4 cm
35 mm3.00 m40.9 cm
40 mm3.00 m31.2 cm
50 mm3.00 m19.8 cm
85 mm3.00 m6.8 cm
105 mm3.00 m4.4 cm

Same lens settings on other formats#

When to use it#

At f/1.4, a 85 mm lens on APS-C is a natural choice for portraits and subject isolation. Focused at 3 m you get 6.8 cm of sharp zone; for maximum front-to-back sharpness focus at 258 m and everything from 129 m to infinity will be acceptably sharp.

See also the f/1.4 aperture guide.

Frequently asked questions#

What is the depth of field of a 85mm lens at f/1.4?

On APS-C, focused at 3 m, it is 6.8 cm; at 1 m it is 0.7 cm.

What is the hyperfocal distance for 85mm f/1.4?

258 m (847 ft) on APS-C. Everything from 129 m to infinity is acceptably sharp.

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