Sigma TC-1401 1.4x Teleconverter for Nikon

Equipped with 1 SLD (Special Low Dispersion) glass element for maximum image quality, the new Sigma Global Vision teleconverters utilize a splash and dust proof construction for long lasting durability. Created exclusively for the Global Vision lenses, these teleconverters ensure the utmost in compatibility, even for large diameter lenses. With effective AF at F8 and 1.4x the reach, get the most out of your Sigma lens.

High standard tele converter that is perfect for new product lines
SIGMA TELE CONVERTER: renewal for new concepts and better image quality

The SIGMA TELE CONVERTER is developed exclusively for the new lens lines. By mounting it in between a telephoto lens and a camera, the offered magnification of focal length of TC-1401 is 1.4 times times respectively. 
TC-1401 incorporates SLD (Special Low Dispersion) glass elements that offer excellent aberration correction. It is exceptional for a lens accessory to use one of the best glass materials, yet this is because SIGMA is seeking for the best image quality, and it is necessary to meet the new "SGV" standards. 
It is suitable for professional use since its durable construction is dust and splash-proof. It is compact and light, and provides easy extension of focal range.

Incorporating SLD glass elements for better image quality

TC-1401 incorporates 1 SLD (Special Low Dispersion) glass element. By minimizing chromatic aberration effectively, it has achieved very good optical performance, thus it is possible to maintain the optical quality of the original lens.

Compatible with lenses of large diameter

Its power distribution is designed for lenses of large diameter. Without affecting the lens performance, it offers stable image quality until corners. The rich peripheral brightness enables shooting quality images at every focal length.

The durable dust and splash-proof construction is suitable for professional use

It is dust and splash-proof, and designed for higher durability. SIGMA 150-600mm F5-6.3 GD OS HSM |Sports and other telephoto lenses are able to meet the demands that professional photographers would require in severe shooting conditions, such as in the rain.

AF is effective up to F8

When the new SIGMA TELE CONVERTER is attached to cameras that are compatible with AF at F8, it is possible to shoot with AF.
* When shooting subjects with low contrast or luminosity value, focus may not be spot on the subject.

Evaluation with SIGMA's own MTF measuring system "A1"

We used to measure lens performance with an MTF measuring system using conventional sensors. However, we've now developed our own proprietary MTF (modulation transfer function) measuring system (A1) using 46-megapixel Foveon direct image sensors. Even previously undetectable high-frequency details are now within the scope of our quality control inspections. The SIGMA TELE CONVERTER TC-1401 and TC-2001 will all be checked using this "A1" before they are shipped.

Ease of use

A rubber part is attached to where it mounts with the original lens, and it prevents the devices from scratching each other. It has the same materials and finishing for integrated design as the lenses from the new product lines.
* There is difference in the specification from mount to mount.

"Made in Japan" with the best craftsmanship

All SIGMA's manufacturing – right down to the molds and parts – is carried out under an integrated production system, entirely in Japan. We are now one of the very few manufacturers whose products are solely "made in Japan". We like to think our products are somehow imbued with the essence of our homeland, blessed as it is with clean air and water, and focused, hard-working people. We pride ourselves on the authentic quality of SIGMA products, born of a marriage between highly attuned expertise and intelligent, advanced technology. Our sophisticated products have satisfied professionals and lovers of photography all over the world, because our manufacturing is based on genuine craftsmanship, underpinned by the passion and pride of our experts.

Compability Chart

Compatibly of the SIGMA TELE CONVERTER TC-1401 and TC-2001

• Dedicated tele converters for use with only those SIGMA GLOBAL VISION lenses listed in the above chart and cannot be used with any other lenses.
• Cannot be attached to a camera and lens whose mount is different.
• Cannot be used in combination with another SIGMA TELE CONVERTER or other manufacturer’s converter. Only one tele converter can be used at one time.

Notes

• Please attach the TELE CONVERTER to the master lens first then attach the combined TELE CONVERTER and lens to the camera body. Attaching to SIGMA TELE CONVERTER to the camera body first may cause a malfunction and accurate operation is not guaranteed.
• Using the SIGMA TELE CONVERTER decreases the effective aperture by one F-stop (with 1.4x Tele Converter) or by two F-stops (with 2x Tele Converter). 
  Although the exposure becomes lower, the operation is optimized.
• If using a lens which has in the list, the camera's display will indicate the converted exposure information.
• Auto focus can be used for the lens with AF mark in the chart.
  For those with MF mark, only manual focus can be used.
  Although the lens has MF mark in the chart, some lens can be used with auto focus but accurate operation is not guaranteed. Also, it may cause damage to the lens. Therefore, please use such lenses in MF mode when TELE CONVERTER is attached.

*1 Requires firmware update to version 1.01 or later.
*2 Requires firmware update to version 1.02 or later.
*3 Requires firmware update to version 1.03 or later.
*4 In cameras with F8-compatible autofocus, SIGMA TELECONVERTER can be used with AF, but blurry images may result of subjects of low contrast or luminance.