Depth of field · APS-C

35 mm f/1.8 depth of field on APS-C

Exactly how much is sharp with a 35 mm lens at f/1.8 on an APS-C camera, from 30.0 cm to 100 m.

34.1 m
Hyperfocal distance
17.0 m
Sharp from (focused at hyperfocal)
54 mm f/2.8
Full-frame equivalent
44°
Diagonal angle of view

Depth of field by subject distance#

35 mm at f/1.8 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)29.8 cm30.2 cm0.5 cm50% / 50%10.93%
50.0 cm (1.64 ft)49.3 cm50.7 cm1.4 cm49% / 51%6.23%
75.0 cm (2.46 ft)73.5 cm76.6 cm3.2 cm49% / 51%4.05%
1.00 m (3.28 ft)97.2 cm1.03 m5.7 cm49% / 51%3.00%
1.50 m (4.92 ft)1.44 m1.57 m12.9 cm48% / 52%1.98%
2.00 m (6.56 ft)1.89 m2.12 m23.2 cm47% / 53%1.47%
3.00 m (9.84 ft)2.76 m3.29 m52.7 cm46% / 54%0.98%
4.00 m (13.1 ft)3.58 m4.53 m94.5 cm44% / 56%0.73%
5.00 m (16.4 ft)4.36 m5.85 m1.49 m43% / 57%0.58%
7.00 m (23.0 ft)5.81 m8.80 m2.99 m40% / 60%0.42%
10.0 m (32.8 ft)7.73 m14.1 m6.41 m35% / 65%0.29%
15.0 m (49.2 ft)10.4 m26.8 m16.4 m28% / 72%0.19%
20.0 m (65.6 ft)12.6 m48.4 m35.8 m21% / 79%0.15%
30.0 m (98.4 ft)16.0 m251 m235 m6% / 94%0.10%
50.0 m (164 ft)20.3 m∞∞—0.06%
100 m (328 ft)25.4 m∞∞—0.03%

Try other settings#

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

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

ApertureTotal DoFHyperfocal
f/1.235.0 cm51.1 m
f/1.440.9 cm43.8 m
f/1.852.7 cm34.1 m
f/258.6 cm30.7 m
f/2.882.8 cm21.9 m
f/41.21 m15.3 m
f/5.61.76 m11.0 m
f/82.73 m7.69 m
f/114.46 m5.60 m
f/1611.6 m3.86 m

Other focal lengths at f/1.8#

Focal lengthSubject atTotal DoF
14 mm3.00 m4.71 m
16 mm3.00 m3.06 m
20 mm3.00 m1.73 m
24 mm3.00 m1.16 m
28 mm3.00 m83.4 cm
35 mm3.00 m52.7 cm
40 mm3.00 m40.1 cm
50 mm3.00 m25.5 cm
85 mm3.00 m8.7 cm
105 mm3.00 m5.7 cm
135 mm3.00 m3.4 cm

Same lens settings on other formats#

35 mm f/1.8 on Full frame35 mm f/1.8 on Micro Four Thirds

When to use it#

At f/1.8, a 35 mm lens on APS-C is a natural choice for environmental portraits, street and low light. Focused at 3 m you get 52.7 cm of sharp zone; for maximum front-to-back sharpness focus at 34.1 m and everything from 17.0 m to infinity will be acceptably sharp.

See also the f/1.8 aperture guide.

Frequently asked questions#

What is the depth of field of a 35mm lens at f/1.8?

On APS-C, focused at 3 m, it is 52.7 cm; at 1 m it is 5.7 cm.

What is the hyperfocal distance for 35mm f/1.8?

34.1 m (112 ft) on APS-C. Everything from 17.0 m to infinity is acceptably sharp.

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