If we skip over the cost, size, weight, and range trade-offs between prime lenses and the 2.8 zooms, where is the image quality trade off today. From the "olden days," I remember that primes produced better quality prints than zooms. But, just how much better are the primes today. Is there some simple answer? I hope for something like "If I want to use a YY mm equivalent lens and print at size XXX or larger then I should use a prime lens."
Robert M. Poston: D4, D810, V3, 14-24 F2.8, 24-70 f2.8, 70-200 f2.8, 80-400, 105 macro.