All I have right now is the kit lens with the epl-5 and I've been going through the Rokinon image thread lately, and love what people have shot there. I love the fish eye effect, it makes some interesting photos. I also really like what I've seen of the Sigma. The only thing is, I could buy the Sigma and get LR4 for the price of the Rokinon but that lens seems like so much fun! Any thoughts?