@MarkL: the air ionizing tip is useful, I will look around how it works and how much it costs for it.
@Louoates: yes thanks, the paths are made for every image as selective correction need to be carefully applied. I often use to fill the background with black and recreate the shadow but it's always better to have a correct reflection on the shot you show to the client on set, so in camera is really better.
@Lightsmith: I used the tent some time ago but for small objects, never liked it anyway, thanks!
Kind regards to all for the help!
Rob