Sigma

Sigma 870956 2.0x Teleconverter TC-2001 Lens

4.0 (449 reviews)

Extend Your Reach with Enhanced Telephoto CapabilityIntroducing the Sigma 2.0x Teleconverter TC-2001, designed for Sigma lenses. This teleconverter doubles the focal length of your lens while maintaining optical quality, featuring SLD glass and a dust and splash-proof design. Magnification: 2.0...

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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Extend Your Reach with Enhanced Telephoto Capability

Introducing the Sigma 2.0x Teleconverter TC-2001, designed for Sigma lenses. This teleconverter doubles the focal length of your lens while maintaining optical quality, featuring SLD glass and a dust and splash-proof design.

  • Magnification: 2.0x
  • Glass Elements: SLD Glass
  • Durability: Dust and splash-proof construction

Key Features

SLD Glass

Best Glass

Dust and splash proof

Specifications

Magnification
2.0x
Glass Type
SLD Glass, Best Glass
Environmental Resistance
Dust and splash proof

Pros & Cons

👍 Pros

  • Increases the effective focal length of compatible lenses by 2.0x, allowing you to capture subjects at greater distances.
  • Utilizes SLD (Special Low Dispersion) Glass, which is beneficial for reducing chromatic aberrations and enhancing image clarity.
  • Constructed with what is described as "Best Glass," suggesting a focus on high optical performance.
  • Features a dust and splash-proof design, providing enhanced durability and reliability for outdoor or challenging shooting environments.
  • The 2.0x magnification is ideal for photographers needing significant focal length extension without carrying multiple large lenses.

👎 Cons

  • The 2.0x magnification typically results in a loss of two stops of light, potentially impacting low-light performance or requiring higher ISO settings.
  • This teleconverter requires specific compatible lenses to function, meaning it may not work with all existing camera gear.
  • While "Best Glass" is mentioned, detailed specifications of the optical design are not provided to fully assess its quality.
  • The dust and splash-proof feature, while beneficial, does not imply full waterproofing or protection from heavy immersion.
  • No specific mention of camera mount compatibility is made in the provided features, which is critical for a teleconverter.

Frequently Asked Questions

The Sigma 2.0x Teleconverter TC-2001 is designed to extend the focal length of compatible lenses by a factor of two.
This teleconverter incorporates SLD (Special Low Dispersion) Glass and is noted for using "Best Glass" to ensure optical quality.
Yes, it features a dust and splash-proof design, offering enhanced protection for shooting in various outdoor conditions.
Teleconverters like the Sigma TC-2001 are generally designed to work with a specific range of compatible lenses, typically from the same manufacturer.
Yes, using a 2.0x teleconverter typically reduces the effective aperture by two stops, meaning less light reaches the sensor.