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Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye Lens
For Nikon F Mount
Fixed focal-length. No zoom.
Fisheye Lens. Shows straight lines as curves.
No thread to mount front filters.
Autofocus Lens
Discontinued: No longer produced by the manufacturer. May still be in stock or found used.Lens Description
The Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye is an ultra-wide prime designed for cameras with a APS-C (1.5X) sensor. This bright prime has a 4.5mm focal-length. It provides the same field of view as a 6.75mm lens on a Full-Frame camera.
This prime lens focuses down to 13.5cm from the imaging plane, capturing subject with a maximum 0.16X magnification. The lens supports autofocus and features a switch to disengage AF for focusing manually. A Super-Sonic motor inside the lens delivers very fast and relatively quiet AF.
The lens weighs 470g.
This version of the lens has a Nikon F mount. It directly attaches and is fully compatible with all Nikon F mount cameras with APS-C (1.5X) sensors. Sigma also makes this lens for Canon EF, Pentax K, Sony A and Sigma S mounts.
Maximum Aperture
Viewing Angle Range
Maximum Aperture
Magnification
Weight
Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye Specifications
| Brand | Sigma | Model | 4.5mm F2.8 EX DC HSM Circular Fisheye |
|---|---|---|---|
| Mount | Max FLM | 1.5X | |
| Focal Length | 4.5mm | View Angle | 180° |
| Max Aperture | F/2.8 | Min Aperture | F/22 |
| Min Focus | 13.5cm | Magnification | 0.16X |
| Filter Size | Aperture Blades | 6 | |
| Size (D x L) | 76 x 78mm | Weight | 470g |
| Tilt | N / A | Shift | N / A |
| Stabilization | Protection | None | |
| Zoom Drive | N / A | Focus Drive | AF with MF Switch |
| Zoom Mechanism | N / A | Focus Mechanism | Internal |
| Hood | No | Focus Motor | Super Sonic |
| Perspective | Circular Fisheye | Introduced | |
| Features | Accepts gel filters. | ||
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Sigma 4.5mm F/2.8 Facts
Fixed focal-length. No zoom.Fisheye Lens. Shows straight lines as curves.No thread to mount front filters.Autofocus LensDiscontinued: No longer produced by the manufacturer. May still be in stock or found used.| 4.5mm Focal-Length | F/2.8 Constant Aperture |
| No filter thread | AF with MF Switch |
| Nikon F Mount | APS-C (1.5X) Coverage |
| 470g Lens Weight | 76 x 78mm (D x L) |
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