Sony has issued updates to its FE 100-400 mm G Master and FE 70-200 mm f/2.8 GM OSS lenses plus a notice regarding its Planar T* FE 50mm f/1.4 ZA lens.

The firmware updates to the two lenses aim to improve continuous autofocus performance during zoom operation when shooting with a Sony α9 camera body. The updates only apply to the α9 camera. To download the updates for the SEL100400GM lens, visit

The SEL70200GM update is available at

Sony has also issued a notice to owners of the Planar T* FE 50mm f/1.4 ZA interchangeable lens, advising that some units may be vulnerable to internal fogging. The company is planning to offer free of charge repairs for the affected lenses. To determine whether your lens is affected click  here  to validate the serial number. For further advice, contact the Sony Customer Contact Centre on 1300 137 669.