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Sigma Tele Converter TC-1401, 1.4x Magnification, Sigma SA-Mount, AF Support

SIGMA

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SKU

SIG879110

$389.00

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Key Features

1.4 Magnification: Increases focal length by 40 percent, boosting reach without a new lens.
SLD Glass Element: Reduces chromatic aberration, preserving sharpness and color fidelity.
Dust and Splash Resistant: Sealed construction for reliable outdoor use in challenging conditions.
Full Electronic Communication: Maintains AF, aperture, and stabilization signals with SA lenses.
Autofocus Support up to f/8: Keeps AF operational with compatible lens and body combinations.
Compact, Lightweight Design: Adds minimal bulk, 190 grams, easy to carry and mount in the field.

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Sigma Tele Converter TC-1401, 1.4x Magnification, Sigma SA-Mount, AF Support Overview

Description

The SIGMA 1.4× Teleconverter TC-1401 (SA-mount) extends a compatible Sigma lens by 1.4 times, giving photographers more reach without buying a new heavy telephoto. It integrates SLD glass to reduce chromatic aberration, preserves electronic communication with SA-mount lenses, and adds only 190 grams to your kit.

Compact, weather resistant, and engineered for optical pairing with Sigma SA lenses, the TC-1401 keeps autofocus functional on supported setups while trading only one stop of light. It is ideal for wildlife, sports, and travel photographers who need extra reach with minimal bulk.

Problem

Photographers who need greater focal length often face the cost and weight of additional super-telephoto lenses, or compromised image quality from generic extenders. The TC-1401 solves this by offering matched optical performance for SA lenses, with minimal size and only one stop of light loss.

Need more reach without buying an expensive telephoto lens.
Worry about sharpness and chromatic aberration when using teleconverters.
Require weather resistance for outdoor shoots.

Solution

The TC-1401 delivers a 1.4× reach increase while minimizing optical degradation with an SLD element, preserving autofocus communication, and offering a sealed build for outdoor reliability. It is a practical, lightweight extension that integrates with Sigma SA optics to keep shooting workflows intact.

Benefits

Affordable Reach: Extend existing lenses, avoid buying larger, costly telephoto lenses.
Maintain Image Quality: SLD element limits chromatic aberration, preserving detail.
Reliable AF Performance: Designed for Sigma SA lenses, keeping AF usable on supported setups.
Portable and Durable: Small form factor, low weight, and weather resistant for field use.

Applications

Wildlife photography, to reach distant subjects without a bigger lens.
Sports photography, for extended coverage of action on the field.
Travel and expedition photography, saving weight while increasing reach.

Why Choose

Optimized specifically for Sigma SA lenses, the TC-1401 provides superior optical pairing and electronic compatibility compared to generic extenders.

Specifications

Model Name / Number	TC-1401
Product Type	Teleconverter, lens accessory
Mount Type	Sigma SA-mount
Magnification	1.4
Optical Construction, Elements / Groups	7 elements in 5 groups, includes SLD glass
Effective Aperture Change	-1 stop
Weather Sealing	Dust and splash resistant construction
Dimensions, Diameter Length	F 69.8 mm 25.0 mm, approx 2.7 in 1.0 in
Weight	190 g, 6.7 oz
Included Caps / Case	Front cap, rear cap, soft carrying case
Warranty	4-year manufacturer warranty, as listed by retailers

Brand	SIGMA
Manufacturer SKU	879956
UPC	085126879563

What’s included

1- Tele Converter TC-1401, SIGMA SA-Mount
1- Front Cap
1- Rear Cap
1- Soft Carrying Case

Compatibility

Sigma 120300mm f/2.8 DG OS HSM	Sigma 150600mm f/56.3 DG OS HSM	Sigma 70200mm f/2.8 EX DG OS HSM	Sigma 300mm f/2.8 EX DG HSM	Sigma 500mm f/4.5 EX DG HSM
Sigma 50500mm style telephoto lenses, SA versions	Selected Sigma sport and contemporary super-tele lenses	SA-mount DSLR bodies, e.g., Sigma SD series	Third-party adapters are not guaranteed	Refer to official Sigma compatibility PDF for exact pairings

FAQ

Q1: Will the TC-1401 affect autofocus?

A1: The TC-1401 reduces light by one stop, and autofocus remains functional on supported lens and body combinations, typically up to an effective f/8 limit, depending on camera AF system.

Q2: Which Sigma lenses are compatible with the TC-1401?

A2: The TC-1401 is designed for Sigma SA-mount telephoto lenses, notably Sport and Contemporary series. Always confirm compatibility with Sigma's official compatibility list for your exact lens model.

Q3: How much light do I lose when using the TC-1401?

A3: Expect an effective reduction of one stop of light when the teleconverter is mounted.

Q4: Does the teleconverter affect image sharpness?

A4: There is some optical impact inherent to teleconverters, but the TC-1401 uses an SLD element to minimize chromatic aberration and preserve image quality.

Q5: Is the TC-1401 weather sealed?

A5: Yes, the unit features dust and splash resistance to match outdoor shooting conditions, but it is not rated to be fully waterproof for submersion.

Q6: What is the weight and size of the TC-1401?

A6: The TC-1401 measures approximately F 69.8 mm 25.0 mm and weighs about 190 grams, keeping it compact and lightweight.

Q7: What is included in the box?

A7: The package includes the teleconverter, a front cap, a rear cap, and a soft carrying case as standard accessories.

Q8: Will the TC-1401 work on non-Sigma lenses with an adapter?

A8: The TC-1401 is optimized for Sigma SA-mount lenses; using adapters or non-Sigma lenses can lead to limited compatibility and degraded AF or optical performance, so it is not recommended.

Q9: How does 1.4 compare to 2.0 teleconverters?

A9: A 1.4 converter gives 40 percent more focal length with a one stop light loss and less optical compromise, while a 2.0 provides double reach, with about two stops loss and greater potential image degradation.

Q10: What warranty does the TC-1401 carry?

A10: Retail listings indicate a 4-year manufacturer warranty for this product, but warranty terms may vary by region and retailer, so check your local Sigma or authorized dealer policy.