I have been reading lately that primes are sharper due to the fix reach. I understand that because I know they get soft as you zoom further. The question is why would you want a prime like 200 when you could have a 100-300. I understand the F/stop etc... But what happens when you're out shooting and you have the perfect shot, but because you're lens can't zoom and you can't focus because it's at that right distance, you lose the shot. If you had the zoom lens though, you could have zoomed a bit and gotten the shot. Can you explain why loosing the shot is worth it or any other reasons.