Sensor format

1/2.5" sensor

Small-sensor format common in mid-2000s point-and-shoots and many phones.

5.76×4.29 mm

Dimensions

6.02×

Crop factor

25 mm²

Area (3% of FF)

-5.1

Stops of light vs full frame

4:3

Aspect ratio

5.0 µm

Circle of confusion

About 1/2.5" sensor#

Small-sensor format common in mid-2000s point-and-shoots and many phones.

Typical cameras: Sony Cyber-shot T-series, many phones.

Compared to other formats#

Lens needed for the same framing#

Full-frame focal length	Equivalent on 1/2.5" sensor	Horizontal angle
14 mm	2.3 mm	102.2°
24 mm	4.0 mm	71.7°
35 mm	5.8 mm	52.7°
50 mm	8.3 mm	38.3°
85 mm	14.1 mm	23.1°
135 mm	22.4 mm	14.6°
200 mm	33.2 mm	9.9°

Equivalent aperture for depth of field#

On 1/2.5" sensor	Full-frame equivalent
f/1.4	f/8.4
f/2	f/12.0
f/2.8	f/16.9
f/4	f/24.1
f/5.6	f/33.7
f/8	f/48.2

Cameras with a 1/2.5" sensor sensor#

271 cameras in our database.

Frequently asked questions#

What is the crop factor of 1/2.5" sensor?

6.02× (diagonal 7.2 mm vs 43.3 mm for full frame).

How big is a 1/2.5" sensor sensor?

5.76 × 4.29 mm, an area of 25 mm².

Is 1/2.5" sensor good in low light?

At the same exposure it gathers 5.1 stops less total light than full frame, so expect roughly that much more visible noise at equal print size. Modern processing narrows but doesn't erase the gap.

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