Ernie Aubert I use the ef 200f2.8L, in fact all my ef lenses. The 400f5.6 gives me a 35mm equivalent 800mm which is handy on occasions. I also have the adapter with the inbuilt adapter. It works well with the lenses that have their rear element closest to the sensor. Otherwise it does vignette a lot.
Panny 25mm f1.4 in the rain. Only just got this lens, as yet not been able to have a good run out with it. I did find today that it was very quick focusing on the OM-D which is great.
