Its fair enough not to be able to access zoom settings through a 'C' button for example, but you would have thought it would be possible to put it into a 'Fn' setting. Customising is a personal thing; perhaps the zoom settings aren't high on most users priorities.
It seems odd that one can program a whole load of what I'd term useless things into the Fn, like "smiling face"??? but not the zoom function. Oh well, I only found out this digital zoom existed yesterday!🙄
