Zonlai released a teaser for their new affordable Leica style square lens hoods which look really nice and feature Sony cameras. The hoods attach via filter threads so the 49mm hood designed for the Zonlai 35mm f/1.6 should fit several Sony lenses like the Sony FE 28mm f/2, Sony Sonnar T* FE 35mm f/2.8 ZA, Sony Sonnar T* FE 55mm f/1.8 ZA, and many NEX lenses (APS-C).
The 46mm that is designed for the Zonlai 22mm f/1.8 should fit on the Sigma 19mm f/2.8 EX DN (both versions) and Sigma 30mm F/2.8 EX DN, which are NEX lenses (APS-C).
The hoods should be available soon on Amazon for around $25 when they become available in the US
via FujiAddict