Quick answer
The Sigma 18-125mm f/3.5-5.6 DC is a ultra-wide to short telephoto superzoom lens covering 18-125mm at f/3.5 for the Sigma SA mount. Its moderate maximum aperture works best in good light or with a higher ISO.
About this lens
Sigma 18-125mm f/3.5-5.6 DC: an APS-C superzoom lens with a 18-125mm focal length and a maximum aperture of f/3.5-5.6, made for Sigma SA mount cameras. The wide-to-tele range makes it a one-lens option for travel and everyday shooting.
Sigma 18-125mm f/3.5-5.6 DC specifications
- Brand
- Sigma
- Mount
- Sigma SA
- Focal length
- 18-125mm
- Maximum aperture
- f/3.5
- Lens type
- Superzoom
- Optical construction
- 15 elements in 14 groups
- Aperture blades
- 7
- Minimum focus distance
- 0.5 m
- Maximum magnification
- 0.19x
- Filter thread
- 62 mm
Specification source: dyxum.com
What can you shoot with the Sigma 18-125mm f/3.5-5.6 DC?
At 18-125mm this is a ultra-wide to short telephoto superzoom, which typically suits:
- Landscapes and big skies
- Architecture and interiors
- Astrophotography and night skies
- Landscapes and cityscapes
- Street and travel photography
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 | 18–125mm | 16.4–90° | 19.6–100.5° |
| APS-C | 1.5x | 27–188mm | 11–67.4° | 13.2–77.4° |
Frequently asked questions
What mount does the Sigma 18-125mm f/3.5-5.6 DC use?
It uses the Sigma SA mount, so it fits Sigma SA cameras directly.
What is the focal length of the Sigma 18-125mm f/3.5-5.6 DC?
It zooms across 18-125mm with a maximum aperture of f/3.5. That makes it a ultra-wide to short telephoto lens.
Is the Sigma 18-125mm f/3.5-5.6 DC a prime or a zoom lens?
It is a zoom lens covering 18-125mm, so you can reframe without moving. Its maximum aperture is f/3.5.
What is the Sigma 18-125mm f/3.5-5.6 DC equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 27–188mm on full frame, with a 11–67.4° horizontal and 13.2–77.4° diagonal field of view. These figures are calculated from the focal length and crop factor.
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