Theoretical question: If you had the prime lenses such as the 12, 17, 25, the lens tests and sample images get released and the lens produces great sharpness and overall IQ. Will you ditch the primes for the zoom? Would you mind losing about 1.1 stops on average? I personally would lose the 12/2 and the 17 1.8, but keep the 25 1.4 for my Nifty Fifty as I overall love and use the lens too much to give up. but of course what me and most others are wishing for is a wide angle prime or zoom from olympus so i could get my dream setup of 7-14 , 25 & 75 now lets hear your opinions..