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Sigma 18-125mm f/3.5-5.6 DC

18–125 mm · f/3.5 · Sigma SA, Canon EF

The Sigma 18-125mm f/3.5-5.6 DC is a 18–125 mm zoom lens with a maximum aperture of f/3.5 for the Sigma SA, Canon EF, Nikon F AF mounts. Here are its field of view on different sensors, hyperfocal distances, Milky Way exposure limits and the cameras it fits.

Focal length
18–125 mm
Max aperture
f/3.5
Mount
Sigma SA
Designed for
1.53× crop

Field of view by sensor

SensorDiagonal angle of view35 mm equivalent
APS-C (1.5×)76.3° – 12.9°28–191 mm
Canon APS-C (1.6×)73.8° – 12.3°29–200 mm
Micro Four Thirds62.0° – 9.9°36–250 mm

Hyperfocal distance

Focal lengthf/5.6f/8f/11f/16
18 mm3.0 m2.1 m1.5 m1.1 m
125 mm142 m100 m73 m50 m

Circle of confusion 0.020 mm (sensor size the lens is designed for).

Longest exposure for sharp stars

CameraNPF rule (wide open)500 rule
APS-C (24 MP)13.3 s @ f/3.518.2 s

Cameras that fit (289)

Where to buy

B&H PhotoAmazonKEH (used)MPB (used)

FAQ

What is the Sigma 18-125mm f/3.5-5.6 DC equivalent to on APS-C?
It is designed for a 1.53× sensor, giving a full-frame equivalent of 28–191 mm.
Which cameras is the Sigma 18-125mm f/3.5-5.6 DC compatible with?
It fits Sigma sd Quattro, Sigma sd Quattro H, Sigma SD1, Sigma SD1 Merrill, Sigma SD9 and more (see the full list above).