Photo: Rich Niewiroski Jr. (CC BY 2.5)
Quick answer
A circular fisheye for full-frame DSLRs weighing about 400 g, producing a round 180-degree image on full frame. It focuses as close as 0.135 m.
Pros
- Circular 180-degree view
- Close focus 0.135 m
- Compact
Cons
- Extreme distortion
- Needs full frame for a full circle
- No front filters
Verdict
A specialist lens for circular fisheye shots.
About this lens
This 8mm f/3.5 full-frame fisheye lens from Sigma fits Canon EF mount cameras. It suits dramatic perspectives, astrophotography and creative wide-field work.
Sigma 8mm f/3.5 EX DG Circular Fisheye specifications
- Brand
- Sigma
- Mount
- Canon EF
- Focal length
- 8mm
- Maximum aperture
- f/3.5
- Lens type
- Fisheye
- Format coverage
- full-frame
- Optical construction
- 11 elements in 6 groups
- Aperture blades
- 6
- Minimum focus distance
- 0.14 m
- Maximum magnification
- 0.22x
- Weight
- 400 g
- Length
- 68.6 mm
- Diameter
- 73.5 mm
Specification source: sigmaphoto.com
What can you shoot with the Sigma 8mm f/3.5 EX DG Circular Fisheye?
- Creative circular images
- VR and panorama work
- Domes and skies
Its moderate maximum aperture works best in good light or with a higher ISO.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 8mm | 132.1° | 139.4° |
| APS-C | 1.6x | 13mm | 109.2° | 118.8° |
Frequently asked questions
What does a circular fisheye produce?
A round image with a 180-degree angle of view, surrounded by black.
Does the Sigma 8mm f/3.5 work on APS-C?
Yes, but the circular image is cropped by the smaller sensor, so you no longer get a full circle.
Does the Sigma 8mm f/3.5 have stabilization?
No. Stabilization has to come from the camera body if it offers it; otherwise use a faster shutter speed or a tripod.
Alternatives for Canon EF from other brands
All Canon EF lensesSame mount, overlapping focal range, closest maximum aperture first.
