New A1 MTF measuring system

Each lens is checked for previously undetectable high-frequency details using 46-megapixel Foveon direct image sensors.

HSM (hypersonic motor)

HSM (hypersonic motor) delivers high AF speed and extremely quiet performance.

Incorporating a Rear Focus system

The lens incorporates a rear focus system that prevents focus-dependent variation in aberration, making high-level image quality possible throughout the entire image.

Flare and ghosting reduction

SIGMA's Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions.

High-precision, rugged brass bayonet mount

Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.

A lens customizable to your needs

Users will be able to connect the lens to a computer with a special SIGMA USB DOCK and use easy-to-operate on-screen controls to create personal lens specifications.

Exclusive SIGMA Optimization Pro software

SIGMA Optimization Pro software that allows the user to update the lens firmware and adjust focus position and other parameters.

Corresponding AF Mounts

SIGMA / SONY / NIKON / PENTAX / CANON

Vignetting will occur if the lens is used with digital cameras with image sensor larger than APS-C size or 35mm SLR, and APS Film SLR cameras.
AF will not function with Pentax ist* series and K100D DSLR cameras that do not support HSM.