‘Sorry Theo, that won’t work, smart objects are not a magic shortcut to prevent degradation when scaling up, if your original content lacks the necessary resolution it will show when you scale it up.’
David, I think you misunderstood the point. The question was not how you can increase the resolution of a picture. That would ofcourse not be done with smart objects.
But the question was how to work easily with large files. And therefore I suggested the smart object. So that Milton can do all the effects on low sized images and at the end bring everything back to the final output size. (and this is something complete different from increasing the resolution of original footage).
Theo