In two words Hermes, spot on !

The missing ingedient of all mechanical systems is 'reasoning'. Reminds me of when automatic cameras came on the market [yes I was there way back then]. Basicaly the rhetoric was 'it does the thinking for you'. No more exposure problems. However when confronted with a white cat in a black coal mine type situation, what does the automatic brain do, expose for the cat or the coal mine ? Reasoning is why Pro. photographers still use manual cameras and why even though I have a great automatic camera with all the bells and whistles, my old Nikon F1 manual camera and my hand held light meter are the first things I reach for to take a serious photo.

'Systems are great value but their final 'filter' with this punter anyway, will always be reasoning.

Cheers.