My logic Roger, is that I can scan old photographs (car and non-car) and however they are stored from then on, they will always list in date order, which is why I have often posted queries on here and have been very grateful for Milan and others, giving the date some certainty.

If the pics are taken by family members for example, then if it is brother Dave, 216_0207_01, becomes 216_0207d_01, which stops it overwriting my own.

Until I have a date, even a rough one, the pics really can't be filed. Very tough with old slides.

There has to be a logic when there are over 50,000 car pics alone plus family and travel pics (and increasing).