Panasonic's updated MFT f/2.8 standard zoom — 24-70mm equiv with improved Dual I.S. 2 compatibility.
The Panasonic Lumix G X Vario 12-35mm f/2.8 ASPH Power OIS II (H-HSA12035) was released in 2017 as the second-generation constant f/2.8 standard zoom for Micro Four Thirds, adding Dual I.S. 2.0 compatibility over the original. Fourteen elements in 9 groups. Seven rounded aperture blades. 58mm filter thread. At 305g. 0.25m MFD.
Fourteen elements in 9 groups (4 aspherical + 1 UED + 1 UHR elements). Seven rounded aperture blades. The 58mm filter thread. At 305g the lens is moderate. Minimum focus distance of 0.25m. Power OIS. Dual I.S. 2.0 compatible (enhanced combined IS with compatible bodies). f/2.8 constant aperture. MFT image circle (24-70mm equivalent).
The Version II's primary upgrade over the original H-HS12035 is Dual I.S. 2.0 compatibility: the improved combined stabilisation system coordinates the in-lens Power OIS and in-body IBIS for enhanced stabilisation on compatible Panasonic bodies. The optical formula is unchanged from the original. The 24-70mm equivalent range covers the standard professional zoom perspective.
On the used market the Panasonic G X Vario 12-35mm f/2.8 II is available at mid-range MFT constant f/2.8 zoom pricing. Condition checks: AF response, Power OIS engagement, 58mm front element for marks, zoom ring smoothness. Compatible with all Micro Four Thirds bodies.