I generally favor lens hoods as much for protection as for contrast improvement, but I just bought an Oly 12mm that I expect to use primarily for interior shots while traveling. My 9-18mm and my 14-140mm lenses will be my outdoor lenses. So, the Oly 12mm will see a lot of jacket pocket time and I don't want unnecessary bulk. Has anyone actually compared the performance of this lens with and without the OEM style hood? Indoors? Outdoors? I can see where it might be more desirable outdoors or even necessary but I wonder if the hood will have any effect on contrast indoors even where there is normal church/museum/cave, etc. lighting. No speculation or theories please. While I love theories and can waste hours discussing them, I am really looking for someone who has experimental facts. Without buying a hood I may not need, I can't conduct the experiments myself. TIA.