Builth Wells An enthusiastic amateur photographer
- High quality
Published on: 23 July 2020
The Sigma 1.4x Tele-Converter (TC-1401) magnifies the focal length of lenses by 1.4 times. The converter features SLD (Special Low Dispersion) glass elements that offer excellent aberration correction, boasts a durable construction and is dust and splash-proof.
1. Incorporating SLD glass elements for better image quality
TC-1401 incorporates 1 SLD (Special Low Dispersion) glass element and TC-2001 carries 2. By minimizing chromatic aberration effectively, it has achieved excellent optical performance, thus it is possible to maintain the optical quality of the original lens.
2. 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 even to the corners. The rich peripheral brightness enables shooting quality images at every focal length.
3. 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 DG 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.
4. 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.
5. 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.
SIGMA TELE CONVERTER TC-1401
Lens Construction: 7 elements in 5 groups | Shooting Range and Shooting Ratio: 1.4 times of magnification from original lens | Dimensions (Diameter x Length): ø 69.8mm x 25.0mm/2.7in. x 1.0in. | Weight: 190g/6.7oz.
|Ease of use|
|Value for money|
|Scores 9.0 out of 10 based on 2 reviews|
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