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Sigma Tele Converter TC-1401, Original Lens to Canon EF Mount for 1.4 Times of Magnification Factor

SIGMA

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SKU

SIG879101

$389.00

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Key Features

1.4 Magnification: Extends focal length by 40 percent without swapping lenses.
SLD Optical Element: Reduces chromatic aberration and preserves sharpness across the frame.
Compact, Lightweight Design: Adds minimal bulk, ideal for travel and handheld shooting.
Dust and Splash Resistant: Mechanical sealing for reliable field use in challenging conditions.
AF Compatibility: Retains autofocus in many lens and camera combos, effective to f/8.
Minimal Light Loss: Approximately one stop of exposure, predictable for metering.

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Sigma Tele Converter TC-1401, Original Lens to Canon EF Mount for 1.4 Times of Magnification Factor Overview

Description

The Sigma TC-1401 is a 1.4× teleconverter for Canon EF mount systems that extends the effective focal length of compatible lenses by 40 percent while preserving optical quality. Engineered with an SLD glass element and a dust and splash resistant mechanical design, it offers a compact, lightweight option to reach farther without buying a new lens.

Purpose-built for photographers who need extra reach on the move, the TC-1401 keeps autofocus working in many real-world camera and lens combinations up to an effective f/8, and introduces roughly one stop of light loss. It is a practical, value-driven way to widen your framing options for wildlife, sports, and travel photography.

Applications

Wildlife and birding: Add reach to telephoto lenses for tighter framing in the field.
Sports and events: Capture closer action from the sidelines without swapping lenses.
Travel and landscape detail: Extend reach for distant subjects while keeping kit compact.

Benefits

Cost effective reach: Gain 40 percent more focal length without purchasing a new tele lens.
Preserves image quality: SLD optics minimize chromatic aberration and help retain sharpness.
Field-ready reliability: Dust and splash resistance makes the TC-1401 suitable for outdoor use.
Maintains shooting workflow: Autofocus remains functional in many setups up to effective f/8.
Compact portability: Low weight and small footprint keep travel kits light and flexible.

Compatibility

The TC-1401 is designed for use with select lenses in the Sigma Global Vision lineup and other compatible Canon EF lenses. Compatibility, autofocus behavior, and recommended pairings vary by lens model and camera body. Consult the official Sigma compatibility document for a definitive, lens-by-lens table when planning combinations.

Specifications

Model / Variant	Sigma TC-1401, Canon EF mount, MFR 879101
Product Type	Teleconverter, 1.4 focal length extender
Category / Sub-Category	Camera accessory, Teleconverter
Dimensions (W H D)	69.8 mm 25.0 mm (2.7 in 1.0 in)
Weight	190 g (6.7 oz)
Materials / Finish	Optical construction with one SLD element, metal mount
Performance / Capacity	Magnification 1.4, effective light loss approx. 1 stop
Mount / Interface	Canon EF mount (this SKU)
Environmental / Compliance	Dust and splash resistant construction
Warranty	Region and retailer dependent, consult warranty card

Brand	Sigma
Manufacturer SKU	879101
UPC	85126879549

What’s included

1- Tele Converter TC-1401, Canon EF-Mount
1- Front Cap
1- Rear Cap
1- Soft Carrying Case

Compatibility

Sigma 120-300mm F2.8 DG OS HSM Sports	Sigma 150-600mm F5-6.3 DG OS HSM Contemporary	Sigma 150-600mm F5-6.3 DG OS HSM Sports	Sigma 70-200mm F2.8 DG OS HSM Sports	Sigma 85mm F1.4 DG HSM Art
Sigma 100-400mm F5-6.3 DG OS HSM Contemporary

FAQ

What does the Sigma TC-1401 do?

The TC-1401 increases a lens's focal length by 1.4, effectively adding 40 percent reach while introducing approximately one stop of light loss.

Will autofocus still work with the TC-1401?

Autofocus is retained in many camera and lens combinations, with practical AF operation possible up to an effective aperture of f/8, depending on the body and lens used.

Does the TC-1401 affect image sharpness?

Sigma uses an SLD glass element to minimize chromatic aberration and preserve image quality; some minor optical compromise versus a native longer lens is expected but generally controlled.

How much light will I lose when using the teleconverter?

The TC-1401 introduces roughly one stop of light loss, so allow for that in exposure and low light planning.

Is the TC-1401 weather-sealed?

The TC-1401 features dust and splash resistant construction, designed for reliable use in outdoor conditions.

Which mounts are available for the TC-1401?

The TC-1401 is offered in Canon EF, Nikon F, and Sigma SA mount variants; this listing is for the Canon EF mount SKU MFR 879101.

Can I use the TC-1401 on any lens?

Compatibility varies by lens design and mount. Refer to Sigma's official compatibility table to confirm which lenses are supported and how AF behaves with specific camera bodies.

Will using the TC-1401 void my lens warranty?

Using manufacturer-intended teleconverters with compatible lenses generally does not void warranties, but check your lens and teleconverter warranty terms and retailer policies for specifics.

Is the TC-1401 a good alternative to buying a longer lens?

The TC-1401 is a cost effective and portable way to gain reach, though dedicated long lenses can offer better maximum aperture and potentially superior absolute image quality.

What is included in the box with the TC-1401?

Included items typically are the TC-1401 teleconverter, front and rear caps, a soft pouch, and warranty documentation; included accessories may vary by retailer.