Sigma APO Teleconverter 2x EX DG
The Sigma 2x EX DG is a lens from Sigma. Used copies start from $109.87 on GearFocus, with buyer protection on every purchase.
Sigma APO Teleconverter 2x EX DG
Used Sigma 2x EX DG Listings on GearFocus
Lens Overview — Sigma 2x EX DG
Key Features — Sigma 2x EX DG
2x Focal Length Extension: Doubles the focal length of compatible host lenses, effectively increasing telephoto reach without requiring an additional lens purchase.
APO Optical Design: Apochromatic elements minimize chromatic aberration and color fringing that can be introduced when doubling focal length.
Four Mount Options: Available in Sigma SA, Canon EF, Nikon F, and Sony A mounts, making it compatible with a wide range of existing DSLR systems.
Autofocus Support: Retains autofocus operation with compatible Sigma lenses, so field shooting workflows are not disrupted by switching to manual focus.
Full-Frame Coverage: Designed for full-frame image circles, ensuring no vignetting on full-frame DSLR bodies when paired with compatible lenses.
2-Stop Aperture Reduction: As with all 2x converters, the effective maximum aperture of the host lens is reduced by two stops, which affects exposure and autofocus sensitivity.
Lens Specifications — Sigma 2x EX DG
| Spec | Detail |
|---|---|
| Lens Type | Telephoto |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Camera System | DSLR |
| Lens Mount | Sigma SA, Canon EF, Nikon F, Sony A |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Weight | 235g |
Description — Sigma 2x EX DG
The Sigma APO Teleconverter 2x EX DG is a DSLR-compatible teleconverter designed for full-frame format coverage. It is available in four mount options — Sigma SA, Canon EF, Nikon F, and Sony A — giving photographers across multiple systems access to extended telephoto reach. The unit supports both autofocus and manual focus, preserving the focusing modes available with compatible lenses.
Weighing in at 235g, it is a manageable addition to a telephoto lens setup without adding excessive bulk. The teleconverter has no image stabilization of its own and features no filter thread, as it is designed to be mounted between the host lens and the camera body. It is classified as a prime configuration telephoto accessory operating within the telephoto focal length range.
Pros — Sigma 2x EX DG
- ✓Broad mount compatibility covers Sigma SA, Canon EF, Nikon F, and Sony A camera systems
- ✓Supports both autofocus and manual focus operation for flexible shooting
- ✓Full-frame format coverage ensures compatibility with full-frame DSLR bodies
Cons — Sigma 2x EX DG
- ✗No image stabilization built into the teleconverter itself
- ✗No filter thread, so no direct front-element filtration is possible
- ✗Focal length and aperture specification values are not published, limiting precise pre-purchase comparison
Reviews — Sigma 2x EX DG
Videos — Sigma 2x EX DG
Teleconverters | MUST-HAVE or WASTE of MONEY? Are you better off cropping? — Jan Wegener