Quick answer
The Sigma 100-300mm f/5.6 APO is a short telephoto to telephoto telephoto zoom lens covering 100-300mm at f/5.6 for the Sigma SA mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
About this lens
Sigma 100-300mm f/5.6 APO: a telephoto zoom lens with a 100-300mm focal length and a maximum aperture of f/5.6, made for Sigma SA mount cameras, with apochromatic correction. The range suits sports, wildlife, events and portraits.
Sigma 100-300mm f/5.6 APO specifications
- Brand
- Sigma
- Mount
- Sigma SA
- Focal length
- 100-300mm
- Maximum aperture
- f/5.6
- Lens type
- Telephoto Zoom
What can you shoot with the Sigma 100-300mm f/5.6 APO?
At 100-300mm this is a short telephoto to telephoto telephoto zoom, which typically suits:
- Portraits with a flattering perspective
- Events and weddings
- Isolating subjects from the background
- Sports and action
- Wildlife and birds at moderate distance
Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
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 | 100–300mm | 6.9–20.4° | 8.2–24.4° |
| APS-C | 1.5x | 150–450mm | 4.6–13.7° | 5.5–16.4° |
Frequently asked questions
What mount does the Sigma 100-300mm f/5.6 APO use?
It uses the Sigma SA mount, so it fits Sigma SA cameras directly.
What is the focal length of the Sigma 100-300mm f/5.6 APO?
It zooms across 100-300mm with a maximum aperture of f/5.6. That makes it a short telephoto to telephoto lens.
Is the Sigma 100-300mm f/5.6 APO a prime or a zoom lens?
It is a zoom lens covering 100-300mm, so you can reframe without moving. Its maximum aperture is f/5.6.
What is the Sigma 100-300mm f/5.6 APO equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 150–450mm on full frame, with a 4.6–13.7° horizontal and 5.5–16.4° diagonal field of view. These figures are calculated from the focal length and crop factor.
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