Panasonic Lumix DMW-STC20 2x Teleconverter, L-Mount

The DMW-STC20 is a 2x teleconverter for LUMIX S Series telephoto lenses. It mounts between an L-Mount body and a compatible lens and multiplies the focal length by 2x, so a LUMIX S Pro 70-200mm F4 (S-R70200) reaches 400mm at the long end.

Optics run to 8 elements in 4 groups in a full-frame L-Mount barrel measuring 65.3mm max diameter x approx. 41.6mm length, and the unit weighs approx. 230g. Autofocus stays on the camera's phase hybrid system, so tracking behaviour does not change when the converter is fitted.