Sigma 2x TC-2001 Teleconverter
The Sigma 2x TC-2001 is a lens accessory from Sigma — known for its 2x Focal Length Multiplication and Autofocus Compatible. Used copies start from $223.38 on GearFocus, with buyer protection on every purchase.
Sigma 2x TC-2001 Teleconverter
Used Sigma 2x TC-2001 Listings on GearFocus
Overview — Sigma 2x TC-2001
Key Features — Sigma 2x TC-2001
2x Focal Length Multiplication: Doubles the effective focal length of a compatible Sigma lens, bringing distant subjects significantly closer without changing lenses.
Autofocus Compatible: Retains autofocus operation with supported Sigma lenses, so AF-dependent workflows are not disrupted by adding the converter.
Three Mount Options: Available in Sigma SA, Canon EF, and Nikon F mounts, covering the major DSLR ecosystems where compatible Sigma lenses are used.
Full-Frame Coverage: Designed to cover a full-frame image circle, making it usable on full-frame DSLR bodies without vignetting.
Auto and Manual Focus: Supports both AF and manual focus modes, giving shooters flexibility depending on the subject or shooting style.
290g Build Weight: At 290g, the teleconverter adds a manageable amount of weight to a telephoto rig compared to carrying a second, longer lens.
Specifications — Sigma 2x TC-2001
| Spec | Detail |
|---|---|
| Lens Format | Full Frame |
| Camera System | DSLR |
| Zoom Prime | Other |
| Auto Focus | Yes |
| Focus Type | Auto, Manual |
| Focal Length Range | Telephoto |
| Image Stabilization | None |
| Weight unit | g |
| Weight value | 290 |
| Mount lens | Sigma SA, Canon EF, Nikon F |
| Compatible Mount | Sigma SA, Canon EF, Nikon F |
Description — Sigma 2x TC-2001
The Sigma TC-2001 is a 2x teleconverter designed for DSLR camera systems, offering extended telephoto reach for photographers working with compatible Sigma lenses. It covers the full-frame format, making it suitable for use with full-frame DSLR bodies. Mount compatibility spans Sigma SA, Canon EF, and Nikon F, giving it broad reach across multiple DSLR ecosystems.
The TC-2001 supports both autofocus and manual focus, preserving the focusing flexibility of the attached lens. It weighs 290g, adding moderate heft to a telephoto setup. There is no image stabilization on the teleconverter itself, and no filter thread is present.
For DSLR photographers looking to extend the reach of their telephoto Sigma lenses across any of the three supported mounts, the TC-2001 provides a multi-platform solution with AF retention.
Pros — Sigma 2x TC-2001
- ✓Supports three mount systems — Sigma SA, Canon EF, and Nikon F — offering flexibility across DSLR platforms
- ✓Autofocus is retained, allowing continued use of AF with compatible lenses
- ✓Full-frame coverage means no vignetting on full-frame DSLR bodies
Cons — Sigma 2x TC-2001
- ✗No image stabilization is built into the teleconverter itself
- ✗No filter thread, so front-of-stack filter use is not possible on the TC-2001 directly
- ✗Focal length range and maximum aperture values are not specified, limiting precise pre-purchase planning
Reviews — Sigma 2x TC-2001
Videos — Sigma 2x TC-2001
A WARNING to All Photographers: DON’T BUY A TELECONVERTER!!! — Jared Polin