Cameras

APS-C: what each focal length frames

Every camera on this page has a 1.5x crop factor, so whatever the brand, a lens frames like its focal length times 1.5x on full frame. A 50 mm lens frames like 75 mm on full frame on all 15 of them.

To see any of these focal lengths live, Prospekt (Lens Simulator: Prospekt on the App Store) turns your iPhone into a viewfinder for your camera body: pick the body and a focal length from 14 to 300 mm, point the phone, and the screen frames what that lens would. iPhone app, $3.99 once, no subscription.

Try the free lens comparison tool

Cameras with this sensor

How the frames nest

24 mm35 mm50 mm85 mm135 mm
Frames of 24, 35, 50, 85 and 135 mm lenses on this sensor, from the same spot. The outer frame is 24 mm.

Focal length table

Focal lengthFull-frame equivalentHorizontal angleVertical angleDiagonal angle
14 mm21 mm81.2°59.5°91.7°
16 mm24 mm73.7°53.1°84.1°
18 mm27 mm67.4°47.9°77.4°
20 mm30 mm61.9°43.6°71.6°
24 mm36 mm53.1°36.9°62.0°
28 mm42 mm46.4°31.9°54.5°
35 mm52 mm37.8°25.8°44.8°
40 mm60 mm33.4°22.6°39.7°
50 mm75 mm27.0°18.2°32.2°
70 mm105 mm19.5°13.0°23.3°
85 mm128 mm16.1°10.8°19.3°
100 mm150 mm13.7°9.1°16.4°
135 mm202 mm10.2°6.8°12.2°
200 mm300 mm6.9°4.6°8.2°
300 mm450 mm4.6°3.1°5.5°

Classic full-frame looks

Common zoom ranges

What each focal length covers at a distance

Covers is the width x height of the scene with the camera held horizontally. Close up, real lenses frame a little tighter than these numbers.

Focal lengthAt 1 mAt 2 mAt 3 mAt 5 mAt 10 m
24 mm1.0 × 0.7 m2.0 × 1.3 m3.0 × 2.0 m5.0 × 3.3 m10.0 × 6.7 m
35 mm0.7 × 0.5 m1.4 × 0.9 m2.1 × 1.4 m3.4 × 2.3 m6.9 × 4.6 m
50 mm0.5 × 0.3 m1.0 × 0.6 m1.4 × 1.0 m2.4 × 1.6 m4.8 × 3.2 m
85 mm0.3 × 0.2 m0.6 × 0.4 m0.8 × 0.6 m1.4 × 0.9 m2.8 × 1.9 m
135 mm0.2 × 0.1 m0.4 × 0.2 m0.5 × 0.4 m0.9 × 0.6 m1.8 × 1.2 m

How far to stand for a portrait

How far to stand from the subject with the camera held vertically, so the subject fills 90% of the frame height. Full body means a 1.8 m person, head and shoulders about 0.5 m.

Compare focal lengths

Other sensor sizes