New to the M4/3 World and considering purchasing an OMD. I believe i have decided on using an adapter on an OLY 14-54. Its a hard decision to go with the larger size or the kit lens, but i think i really need the performance of the nicer lens. To the main question --- When you use a full frame lens on a crop sensor (APSC) body the lens is multiplied by the crop factor. When using a 4/3 Lens on a M4/3 Body is there any crop factor? Is 4/3 the same sensor size as M4/3? If i buy the 12-50 kit. The effective 35mm range is 22-100. Is the same true for the 14-54 i.e 28-1058? Thanks for your help. Any opinions on if the 14-54 is worth the added size and weight would be appreciated. Thanks!