Olympus has updated firmware for three of its Zuiko Digital lenses. The changes made are to improve the accuracy of contrast-detection autofocus when used on the Panasonic Lumix DMC-L10. Updated: firmware changes to Olympus or Panasonic lenses can only be conducted using the lens manufacturer's cameras.

Panasonic Europe has said that an Olympus camera is required in order to update the firmware on the lenses, and advises that owners may wish to contact Olympus's customer support center. In order for an upgraded lens to work, L10 users will need to update their camera's firmware. An updated version of the firmware (V1.3), will be available from Panasonic on 22 April from 0400 GMT. This download page should, at that time, also provide a link to the Olympus customer support center.

The lenses with improved imager (contrast-detect), autofocus on the Panasonic L10 are:

Zuiko Digital 25mm f/2.8

Zuiko Digital ED 14-42mm f/3.5-5.6

Zuiko Digital ED 40-150mm f/4.0-5.6

More details of the lens firmware can be found here

Conversely, we are told that Olympus E-420 users wishing to use the Panasonic L-X025 lens (Leica D Summilux 25mm / F1.4 ASPH), with contrast-detect autofocus will need to update the lens firmware to V2. Unfortunately, the lens firmware can only be upgraded using a Panasonic DMC-L10. Olympus camera owners wishing to use the Panasonic lens will need to contact Panasonic customer support center. Again, the contact details should appear on the download site.

This rather peculiar state of affairs does make us question just how standardized the 'Four Thirds Standard,' actually is, if you need access to another manufacturer's cameras to get the most out their lenses on your chosen camera.