SIGMA ART 105MM F/2,8 MACRO DG DN FOR L-MOUNT
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The SIGMA Teleconverter TC-2011 is designed exclusively for the use with SIGMA L-Mount lenses. Mounted between a lens and a camera body, theTC-2011 magnifies the focal length of the camera by 2x.
The superior optical performance of the SIGMA Contemporary, Art and Sports lines of lenses is the result of efforts to pursue the highest levels of image quality. The SIGMA Teleconverter TC-2011 upholds the image quality of the original lens to the utmost, while extending the focal length.
Remarkable optical performance enabled by the latest design to provide a high shooting ratio while upholding the high performance of the original lens.
AF is effective at all aperture and all focal lengths.
Dust- and splash-proof construction comparable to that of the Sports line lenses.
Sigma used to measure lens performance with an MTF measuring system using conventional sensors. However, Sigma now developed their 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 Sigmas quality control inspections. The SIGMA Teleconverter TC-1411 will be checked using this "A1" before they are shipped.
All SIGMA's manufacturing – right down to the molds and parts – is carried out under an integrated production system, entirely in Japan. Sigma are now one of the very few manufacturers whose products are solely "made in Japan".