Had the lens for a few days now. Haven't had the time to do serious shooting with it yet but I just wanted to share my first thoughts on it with you all. At first sight, this lens looks beautiful! The looks give that instant certainty that its a high quality lens. I found the large front element just so wonderful to look at. The lens feels good in the hand and build quality is top class! The metal barrel and metallic silver finish feels just as good as the 12mm f2.0, if not better. In fact, I think the paint finish is better than that on my E-M5! It weighs in at 305 grams and for me, the size to weight ratio is well balanced. It's not heavy considering the amount of optics and metal that are in this lens and it feels well balanced on the E-M5 with the horizontal grip attached. Without the grip, it will be tiring after a while's use. Auto focus is accurate, fast and silent. The manual focus ring is smooth but I would probably like a bit more resistance to it, similar to the resistance on the 12mm f2.0. Wide open the lens is very sharp and colors are well rendered. The bokeh is creamy and pleasing. Subject isolation is excellent! And the 75mm f1.8 does this better than the 45mm f1.8. The problem with using it wide open (not the lens problem) is that on a bright sunny day, the shutter speed exceeds 1/4000th second (the limit on the E-M5). The obvious solution is to use a ND filter but that means having to spend money on another filter. So far, I'm very pleased with the performance of this lens and find the focal length not that difficult to use. I think the FL is very dependent on the user and with some thought, we can find situations and subjects where the FL will be very useful. Here are some photos to show the performance of this great lens! All casually taken wide open with the E-M5, natural setting and are OOC JPEGS (no PP or cropping).