I bought a used EPL-3 with 14-42mm lens on eBay. Turns out that instead of the Mk II R, which is the kit lens with the EPL-3, the seller sent the first version of the 14-42 lens (Mk I, I guess). Should I care? Other than the fact that the early version is 40.5 diameter and the later ones are 37, are there any significant differences? All I've been able to find on the web are discussions of the differences between the MkII and MkII R (answer: cosmetic only). (Note -- the seller did not specify which version of the lens he/she was sending, so any fault is mine for not looking closely enough at the pictures to see the itty-bitty 40.5 on the front.) Obviously, since I'm fretting about a kit lens, I'm pretty much of a noob in the micro 4/3 world -- just upgrading from a P&S. I have added a 17mm Oly, and I jumped on the recent $99 deal for the 40-150, but I think the 14-42 is the range I'm likely to use most. Thanks!