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Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye

Nikon F (DX/FX) Autofocus

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
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At a Glance

This 4.5 mm circular fisheye for Nikon F and APS-C corresponds to 7 mm full-frame equivalent. By design it delivers a very wide view in which straight lines appear curved. It offers an f/2.8 aperture and focuses down to 13.5 cm. Creative work and action shots suit it. The lens weighs 470 g and has a rear gelatin filter holder.

Good for

  • Creative
  • Action

Worth knowing

  • APS-C image circle: on full-frame cameras only usable in crop mode, at reduced resolution.
  • 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

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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 designed for APS-C sensors. On APS-C Nikon F-Mount cameras its field of view equals 7 mm in full-frame terms. Full-frame bodies use it in APS-C (crop) mode, recording only part of the sensor and fewer megapixels.

Nikon F-Mount cameras

Full frame (in APS-C mode):
Nikon D6,Nikon D780,Nikon D850,Nikon D5,Nikon D810A,Nikon D4S,Nikon D810,Nikon D750,Nikon Df,Nikon D610,Nikon D4,Nikon D800,Nikon D800E,Nikon D600,Nikon D3S,Nikon D3X,Nikon D700
APS-C:
Nikon D3500,Nikon D7500,Nikon D500,Nikon D3400,Nikon D5600,Nikon D5500,Nikon D7200,Nikon D3300,Nikon D7100,Nikon D5300,Nikon D3200,Nikon D5200,Nikon D5100,Nikon D7000,Nikon D3100,Nikon D300S,Nikon D5000,Nikon D3000,Nikon D90,Nikon D60

With the Nikon FTZ II / FTZ the lens can also be used on Nikon Z (DX/FX) cameras.

This lens is also available for

Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye: FAQ

Does the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye have autofocus?

Yes, the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye has autofocus.

Does the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye have image stabilization?

No, the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.

How much does the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye weigh?

The Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye weighs 470 g. It is 78 mm long with a diameter of 76 mm.

How close can the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye focus?

The minimum focus distance of the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye is 13.5 cm, measured from the sensor plane.

Is the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye a full-frame lens?

No, the Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye is an APS-C lens. On APS-C cameras its field of view equals 7 mm in full-frame terms.

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