Thanks Stan. That's very useful information regarding AF-C function. At the moment I'm using mainly AF-S but I need to think about that more bearing in mind what you've just said. At the moment I've got the Fn button allocated to Bracketing Burst and I've also just set the Preview button for Bracketing burst as well. This latter allocation for the Preview button has only been done today as a result of me receiving (today) a Meike Battery Grip. I've found that in the portrait position the Preview button falls to hand for Bracketing burst better than the Fn button. As to the AE-L function... I'm shooting exclusively in manual so resetting of exposure isn't a problem but again, thanks for the advice.