Definition
Sigma Corporation is a Japanese multinational corporation that designs, manufactures, and sells photographic lenses, cameras, and related accessories for interchangeable‑lens cameras. The company is recognized for producing a broad range of lenses for various mounts, as well as its own line of DSLR and mirrorless cameras.
Overview
Founded in 1961 by Michihiro Yamazaki and his wife, Kiyoshi Yamazaki, Sigma began as an importer of photographic equipment before transitioning to manufacturing its own lenses in the 1970s. Headquartered in Kawasaki, Kanagawa Prefecture, Japan, the firm operates globally through subsidiaries and distribution networks in Europe, North America, and Asia. Sigma’s product portfolio includes:
- Lenses for Canon EF, Nikon F, Sony E, Micro Four Thirds, and other mounts, categorized into three series—Art (A), Contemporary (C), and Sports (S)—that target different photographic applications.
- Camera bodies, notably the Sigma fp series (including the fp and fp L), which are compact full‑frame mirrorless cameras aimed at both still‑image and video creators.
- Accessories, such as flashes, adapters, and filters.
Sigma is listed on the Tokyo Stock Exchange (ticker: 6426) and, as of the most recent financial reports, generates annual revenues exceeding several hundred billion yen. The company emphasizes innovative optical designs, such as its “Global Vision” technology, which aims to enhance resolution and reduce aberrations across the lens field.
Etymology/Origin
The name “Sigma” derives from the Greek letter Σ (sigma), which is commonly used in mathematics and engineering to denote summation or totality. The founders selected the name to convey a comprehensive approach to photographic technology and to evoke a sense of precision and completeness.
Characteristics
| Aspect | Details |
|---|---|
| Product focus | High‑performance lenses for DSLR and mirrorless systems; compact full‑frame mirrorless cameras. |
| Technological innovations | Global Vision lenses, Super Multi‑Layer Coating, Optical Stabilization (OS), and Fast Auto‑Focus (FAF). |
| Market positioning | Mid‑range to premium segment, offering alternatives to native lenses from camera manufacturers at competitive price points. |
| Manufacturing | Primary production facilities are located in Japan and Thailand; quality control adheres to ISO 9001 standards. |
| Corporate structure | Publicly traded with a board of directors; operates subsidiaries such as Sigma Photo Imaging (U.S.) and Sigma Europe (Germany). |
Related Topics
- Photographic lens manufacturers – Companies such as Canon, Nikon, Sony, Zeiss, and Fujifilm that produce lenses for interchangeable‑lens cameras.
- Mirrorless cameras – A class of cameras lacking a reflex mirror, of which Sigma’s fp series is a notable example.
- Optical design – The field concerning lens construction, coatings, and performance metrics.
- Digital imaging – The broader technological domain encompassing cameras, sensors, and image processing.
Note: All information presented reflects publicly available and verifiable sources as of the latest data up to 2024.