Originally posted by tvdtvdtvd I wish folk would stop calling FF an upgrade from APS-C. It's not. It's a different format.
In probably most ways that matter to photographers, it's an 'upgrade', in that it provides all the shooting options you had with the smaller format and some new ones the smaller format doesn't provide. **
It provides the potential for less noise, more DR, more DOF control in the majority of shooting situations. How
much of an upgrade it is depends entirely on the photographer and her use cases.
For a lot of people, the level of 'upgrade' it provides for their shooting scenarios isn't worth the cost.
Knowing how to apply equivalence helps you figure that out - helps you manage expectations before you lay down the $$. There's a good example of this with a PF member I can provide.
** and this is without taking the 'upgrades' that the manufacturer may put in the top-line body, like better AF module, bigger VF, other options that go into the flagship.