Ricci (Utube) did a great comparison of the Z24-70 f2.8 and primes between 24 and 70mm. The 24-70 f2.8 is terrific. Unless you "have to have" and spend lots of $$ for primes, the Z 24-70 f 2.8 really does it all. Actually all the Z zooms are amazing. The primes are for specific occasions where you only want that focal length.
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