Olympus has issued a firmware update for its OM-D and PEN cameras that improves AF performance with the recently-released M.Zuiko Digital ED 40-150mm f/2.8 PRO lens.

The new firmware is available for the E-M1, E-M5 and E-M10 cameras in the OM-D range and the PEN E-P5, E-P3, E-PL7, E-PL6, E-PL5, E-PL3, E-PM2 and E-PM1 cameras. It can be downloaded free of charge from http://www.olympus.co.jp/en/support/imsg/digicamera/download/software/firm/e1/. Full installation instructions are provided.