I have an e-pl1. I also have m.zuiko 40-150mm but feel like I need something longer. I found adapted OM lens which is 300mm f4.5 on ebay. It will be alot cheaper than 100-300mm panasonic lens. As of right now I do not have the funds to spend on the panasonic lens. What do you think? OM 300mm f4.5 lens or panasonic 100-300mm?