Me too. That's what 6x4 will always means to me -- standard sized prints. As for the wording of the options, in maths terms, I never think in terms of 'so many

Me too. That's what 6x4 will always means to me -- standard sized prints. As for the wording of the options, in maths terms, I never think in terms of 'so many lots of something' -- it's just 6 times 4 (well, I guess that's semantically the same as 4 lots of 6, but I'd never think of it in those words).