Not quite at the same level, the only niggle for me is the f5.6. I will either go for the f4EFL or the f5.6 PF... Going to Costa Rica in March and Scotland, neither renowned for their light, so f4 holds great appeal for me. I've used both G and E f4s and liked them both, the E benefitting from newer tech and being 20% lighter than the G but now considering the f5.6. Decision complicated by the fact I have the 200-500 which is great but not prime level of IQ.