i don't know for sure, as I don't have this lens, but i wouldn't think so. I personally have the panasonic leica 25mm f/1.4, and the Zuiko 45mm. The wider the lens, the more you may run into that problem, but i believe it's contained to fish eye type lenses. The 17mm f/1.8n got some pretty good reviews on Amazon. I liked the mention of fast auto focus, and the all-metal build. I'm definitely a prime lens guy, and now I've got my eye on the Zuiko 75mm! Gotta save up some moolah for that one.
The olympus 45mm lens, if you can afford it, will take magnificent close up to medium distance shots. It's the perfect portrait lens, giving fantastic bokei. The 14mm or 20mm panasonic will give you great panoramic views and will also take interesting close ups. From a medium distance they can take a shot of a deer, for example, and the surrounding landscape. From a longer distance though, the deer will seem too far in the distance. If you're just planning on zooming into wildlife from a fair distance away, the 70 - 300 will probably work just fine on it's own.
Certainly. What you need is this adapter http://goo.gl/sx8VsR. It sits between your OM-D and your OM lens. I ordered one cheaper and I received the OM lens to 4/3 camera adapter. What I needed was the OM to micro 4/3 adapter. Didn't try to return it because I live overseas and it's more expensive than ordering the right one again. I have an Evolt E500 so the adapter received by mistake probably will work on it, but I haven't had the time to test. It you get the right adapter, an OM to micro 4/3, being Olympus or another cheaper, you will be able to use your old OM lenses on the new OM-D cameras, but be aware that the camera won't be able to control the lens. You'll have to focus and to close the aperture manually before pushing the shutter. Small price to pay for being able to use those wonderful pieces of art.