Sony have released a firmware update for the 18-105mm lens that is available as a package with the FS5. The update addresses some of the focus tracking issues that some lenses appear to have. To update the lens firmware you need to go to the support page of Sony consumer: http://www.sony.co.uk/support/en/product/SELP18105G
and download the update package. You will need to have the lens mounted on a camera and the camera connected to a Mac or PC. Full install instructions are provided after you click on the Mac or PC download link buttons.
If you like what you read here, please also visit and subscribe to my YouTube Channel by clicking here. Thanks.
This does not address the problem for FS7 users who also have this lens.
I was hoping it would and after updating the lens can confirm zero improvement when using on the FS7. Bummer
I found the focus now tracks through the zoom range much better on all of my E-Mount cameras after the update.
Phillip,
What is the problem with this lens and the FS7?