Nick, Keith, Sean -
Thanks for helping me out - I hope my 'system' now works all the time!
Rob C (Happy Chappie).
P.S. One thing about that image, using Kodachrome (any tranny material, really) and the incident light metering system where you expose for the highlights certainly did hold the highlights in the white cloth pretty well. I realise this isn't news to pro viewers, but might help anybody else not used to incident light metering.