I'm hoping to capture great pictures in a helicopter in Kauai. I'm a beginner. I may not be able to change lens in flight so I may have to pick one. I've heard about and seen online the purple spots when using the Pan. 7-14mm . Will this occur if using on the Pen E-PL2? The helicopter trip will be in the daytime and I may have direct sunlight. (Also, another question: Are filters not used on these wide angles? Also if using this carefully and not during windy times on beaches, am I safe just using the hood? ) I also have the Panasonic 14-140mm (but this baby is heavy) as well as the standard Olympus 14-42mm. I'm learning to manual focus and enjoy doing that when there is ample time for me to play with it; but in the helicopter, I'm assuming auto focus. Obviously you can tell by my questions, I'm pretty green here so any suggestions will be appreciated. Please note I may not understand advanced photography jargon, so if you could keep it real simple for me, that would be super. Thank you very much for any help!