Outstanding optical performance
Remarkable optical performance enabled by the latest design to provide a high shooting ratio while upholding the high performance of the original lens
Compatible with autofocus
AF is effective at all aperture settings and all focal lengths
Dust- and splash-proof
Dust- and splash-proof construction comparable to that of the Sports line lenses.
Every single converter undergoes SIGMA's proprietary MTF measuring system "A1"
Made in Japan" craftsmanship