maranatha wrote:
I have sony A35. Using minolta 35/105 lens does same with two other lens both sigma. When switched lenses twitch short quick turns does contacts need cleaning thanks in advance love all your beautiful pictures
Some lenses when turned off do a total retraction and then when turned on go to a default position. Especially zooms. It is more common in fixed lens cameras but some interchangable zooms also do it. It may be zooming or it may be the AF, it depends on the lens.