This is my first post and decided to join here as it seems to be the biggest 4/3 forum available with some very interesting discussions going on! So Hi all! I just bought the E-P5 and am getting back to photography after quite a few shutter-snapless years. I would love the idea about a portable ring flash and http://roundflash.com seems to be right product. What worries be bit is that does it work with lets say, 75mm 1.8 which I'm planning to buy?