It all depends on who was taking the original shots - there is no way to really tell otherwise.

The majority of fashion snappers have now gone over to digital but there are still quite a number who still use film.

Same with product shots - a lot of it will be done on Large Format which will still be film but those using mf will probably now be using digital - whichever is used the post processing will be digital these days.

Hiryuu - not strictly true. I know snappers who still shoot on film (myself included) sometimes. Sure the post processing is done after the film is scanned and digitised but the originals are still film.