LostArk wrote in post #16465973
No one "absolutely requires" anything. f/1.4 gives a magical look to portraits. If you're going to use a boring and slow midrange zoom, why not just use a G15 and call it a day? With the high IQ of compacts these days I'm not sure why people still buy midrange zooms.
Because some people need versatility to be able to change focal length on the spot. Not everybody has the ability to walk back and forth framing images with primes. I use my 17-40 and 24-70 II very often, and the 24-70 II is like having a 24mm, 35mm, 50mm and 70mm prime all in one (and all inbetween). The IQ is superior to almost every prime I have used at comparable apertures (f/2.8 and smaller).
I love primes, don't get me wrong. I simply love f/1.2, f/1.4 and f/2 apertures but for much of the work I do, the set focal length becomes a hassle. With the high ISO ability of the 5D3, I can use f/2.8 zooms and be perfectly fine.
Different strokes for different folks...