Some owners of the Sony 24-105mm F/4 G have noted a focus shift issue. Essentially, changing the aperture changes the focus depth. As a result, if the lens focuses wide open before stopping down the final image will be out of focus.
My copy is not affected. Overall, it’s a stellar lens. Please feel free to see my Sony 24-105 review for further information.
Sony is now offering to repair the affected lenses at this link.
I assume new copies of the Sony 24-105mm will be unaffected. Please consider supporting this site and using this Amazon link to purchase the lens if you are interested in it:
I’ve also purchased these ND filters to use on the 24-105mm:
6 Stop Filter: ICE 77mm ND64
10 Stop ND filter: ICE 77mm ND1000 Filter Neutral Density