Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye

Focal length: 4.5 mm
Aperture: f/2.8
Weight: 470 g
Filter diameter: –
Min. focus distance: 13.5 cm
Length: 78 mm

At a Glance

A circular fisheye for Canon EF and APS-C, this lens has a 4.5 mm focal length, equal to 7 mm full-frame equivalent. The view is extremely wide and straight lines come out curved. With an f/2.8 aperture and a 13.5 cm minimum focus distance, it works for creative subjects and action. A hyper sonic motor drives the autofocus, and a gelatin filter holder sits at the rear.

Good for

Creative
Action

Worth knowing

Designed for APS-C: only usable on EOS cameras with an APS-C sensor.
Fisheye projection: straight lines away from the center are rendered curved.

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

Min. focal length: 4.5 mm
Max. focal length: 4.5 mm
Max. aperture (min. zoom): f/2.8
Max. aperture (max. zoom): f/2.8
Min. aperture: f/22
Elements: 13
Groups: 9
Weight: 470 g (1.04 lb)
Filter diameter: –
Min. focus distance: 13.5 cm (5.31 in)
Max. magnification: 1:6 (0.17×)
Length: 78 mm (3.07 in)
Diameter: 76 mm (2.99 in)

Manufacturer data: sigma-global.com, sigmaphoto.com

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye fit?

The Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye is made for Canon APS-C cameras, where its field of view equals 7 mm in full-frame terms. It is not meant for full-frame EOS bodies: EF-S lenses do not mount on them at all, and third-party APS-C lenses vignette heavily.

Canon EF cameras

APS-C:: Canon EOS 850D (Rebel T8i),Canon EOS 90D,Canon EOS 250D (Rebel SL3),Canon EOS 4000D (3000D, Rebel T100),Canon EOS 2000D (1500D, Rebel T7),Canon EOS 800D (Rebel T7i),Canon EOS 77D,Canon EOS 200D (Rebel SL2),Canon EOS 80D,Canon EOS 1300D (Rebel T6),Canon EOS 750D (Rebel T6i),Canon EOS 760D (Rebel T6s),Canon EOS 7D Mark II,Canon EOS 1200D (Rebel T5),Canon EOS 70D,Canon EOS 700D (Rebel T5i),Canon EOS 100D (Rebel SL1),Canon EOS 650D (Rebel T4i),Canon EOS 60Da,Canon EOS 600D (Rebel T3i),Canon EOS 1100D (Rebel T3),Canon EOS 550D (Rebel T2i),Canon EOS 60D,Canon EOS 7D,Canon EOS 500D (Rebel T1i),Canon EOS 50D,Canon EOS 450D (Rebel XSi),Canon EOS 1000D (Rebel XS)

With the Canon Mount Adapter EF-EOS R the lens can also be used on Canon RF cameras.

With the Canon Mount Adapter EF-EOS M the lens can also be used on Canon EF-M cameras.

This lens is also available for

Nikon F (DX/FX)