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Sigma Tele Converter TC-2001, 2x Magnification, SIGMA SA-Mount, AF Support, Dust & Splashproof

SIGMA

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SKU

SIG870110

$449.00

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Key Features

2.0 Magnification: Doubles lens focal length for extended reach.
Optical Construction: 10 elements in 5 groups for consistent imaging quality.
SLD Glass: Two Special Low Dispersion elements reduce chromatic aberration.
Dust & Splash-Proof: Sealed construction for reliable outdoor use.
AF Compatibility: Autofocus supported up to f,8 on compatible pairings.
Compact & Lightweight: Approx 290 g, adds reach without heavy bulk.

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Sigma Tele Converter TC-2001, 2x Magnification, SIGMA SA-Mount, AF Support, Dust & Splashproof Overview

Description

The SIGMA TELE CONVERTER TC-1401 / TC-2001 extends your compatible telephoto lenses without requiring a larger, heavier lens. Built with precision optics and two SLD elements, the TC-2001 (2.0×) doubles focal length while maintaining high peripheral brightness and controlled chromatic aberration.

Weighing approximately 290 g and finished with dust and splash-proof sealing, this tele converter is designed for field use with supported Sigma, Canon EF, and Nikon F mounts, and supports AF in many camera/lens pairings up to f,8 where the system allows.

SIGMA TELE CONVERTER TC-1401 / TC-2001 Overview, a precision teleconverter engineered to work with Sigma Global Vision lenses and select third-party lenses, increases effective focal length while preserving image quality and reliable electronic communication with the camera for EXIF and AF signals where supported.

Problem

Many photographers need more reach but cannot justify or carry heavier super-telephoto lenses. Teleconverters sometimes degrade image quality and disrupt autofocus, creating hesitation when upgrading reach. The TC-1401 / TC-2001 addresses these concerns with SLD optics and an official compatibility chart to reduce risk.

Worried about loss of sharpness and chromatic aberration?
Unsure whether AF will continue to work with your camera/lens?
Need a weather-resistant option for outdoor shoots?

SIGMA TELE CONVERTER TC-2001 mount detail

Solution

Use the TC-2001 to extend the reach of compatible telephoto lenses quickly and economically. The converter preserves essential optical characteristics using SLD glass and an optimized optical formula, while sealed mechanics maintain field reliability. Verify camera and lens pairing with Sigma's compatibility chart before use.

Benefits

Extended Reach: Adds 2× focal length to your current lens, avoiding new heavy telephotos.
Optical Integrity: SLD elements and optimized design minimize chromatic aberration and maintain corner performance.
Field-Ready: Dust and splash-proof construction improves reliability outdoors.
Cost-Efficient: Gain substantial focal length for a fraction of the cost of new super-telephoto lenses.

Applications

Wildlife photography, extending reach for distant subjects.
Sports and stadium shooting where extra focal length is required.
Birding and nature photography for tighter framing without moving closer.

Why Choose

Designed to pair with Sigma Global Vision optics, with two SLD elements to defend against chromatic aberration and maintain image quality.

Specifications

Model Name / Number	TELE CONVERTER TC-1401 / TC-2001
Product Type	Tele Converter (2.0 for TC-2001)
Intended Use	Photography, Video
Weather Sealing	Yes, dust and splash-proof
Dimensions (Diameter Length)	F 69.8 mm 48.9 mm
Weight	290 g
Mount Type	SIGMA SA, Canon EF, Nikon F (mount-specific SKUs)
Supported Camera Brands / Systems	SIGMA, Canon, Nikon (mount dependent)
Magnification	2.0 (TC-2001)
Optical Construction (Elements / Groups)	10 elements in 5 groups
Special Elements	2 SLD elements (Special Low Dispersion)
Coatings	Multi-coating (manufacturer standard)
Autofocus Support	AF effective up to f,8 where camera and lens support it
Internal Focusing	N/A for tele converter
Build Quality	Rubberized mount interface to prevent scratching, sealed for dust/splash protection

Brand	SIGMA
Manufacturer SKU	870110
UPC	85126870560

What’s included

1- Tele Converter TC-2001, SIGMA SA-Mount
1- Front Cap
1- Rear Cap
1- Soft Carrying Case

Compatibility

FREEFLY Ember S5K	Sony BURANO	Sony ILX-LR1	Sony NEX-VG30	Sony PXW-FS7M2
Kinefinity MAVO LF MKII	Sony BURANO CineAlta Digital Cinema Camera	Sony NEX-EA50M	Sony NEX-VG900	Sony PXW-FX9
Kinefinity MAVO S35 MKII	Sony FX3	Sony NEX-EA50UH	Sony PXW-FS5	Sony VENICE 6K Digital Motion Picture Camera
Sony FX30	Sony FX6	Sony NEX-FS700R	Sony NEX-FS700U	Sony PXW-FS5M2
Sony PXW-FS7

FAQ

Which mounts are available for the TC-2001?

The TC-2001 is available in SIGMA SA, Canon EF, and Nikon F mounts, each with its own SKU and UPC.

Will my camera still autofocus with this 2 teleconverter?

Autofocus is supported up to f,8 on many camera and lens combinations, but behavior depends on the specific body/lens pairing. Refer to the official compatibility chart before use.

How much light is lost when using the TC-2001?

A 2 teleconverter reduces effective maximum aperture by two stops, so an f,4 lens becomes f,8 at the camera body, which may affect AF and exposure.

Does the TC-2001 affect image sharpness?

Optical performance is preserved as much as possible using SLD glass and optimized design, but some loss of absolute sharpness is typical with any 2 teleconverter compared with the native lens alone.

Is the TC-2001 weather sealed?

Yes, the tele converter features dust and splash-proof construction, including a rubberized mount interface to help prevent ingress and scratching.

Which Sigma lenses are officially compatible?

Compatibility is listed in Sigma's official compatibility PDF; only the lenses listed there are recommended. Always consult the compatibility list to avoid AF or mechanical issues.

Can I use the TC-2001 with third-party lenses?

Third-party performance varies. Sigma provides mount-specific guidance; verify compatibility and AF behavior before use to avoid potential issues.

What's included in the box?

The box typically includes the tele converter, front and rear caps, a soft pouch, and the instruction manual / compatibility sheet. Availability can vary by dealer.

What is the weight and physical size of the TC-2001?

The TC-2001 measures approximately F 69.8 mm 48.9 mm and weighs about 290 g, making it a compact, lightweight option to add reach.

Where can I buy and what warranty applies?

Sigma lists regional dealers via Find a dealer on its site. Price, availability and warranty terms vary by region and dealercontact your local authorized dealer for exact details.