Last month, Sigma announced that it is releasing Sony E-mount versions of its Art lens line to accompany the Canon, Nikon and Sigma camera mount versions. While we’ve been able to use Sigma lenses on Sony’s A7 series thanks to the Sigma MC-11 adapter, the performance is still lacking because it is not a native connection for the Sony A7 lens mount.

Now, Sony users have a native E-mount for the A7 series, as well as other E-mount cameras. However, due to the fact that the identical optics are used for the Sony version, the lenses are substantially larger to accomodate the flange distance for the Sony camera.

Above, the Sigma 24mm f/1.4 Art lens is shown in Sony (left) and Nikon (right) mounts. Essentially, this is the same barrel length increase as using the adapter on the EF-mount lenses. [Read more…]