EspenW wrote in post #2598987
Bought my first SLR a month back....
... I still have probems to understand everything about the differences between FF and 1.6 sensors and lenses.
Don't get bogged down with this. It's too soon to worry if a lens you don't own would perform differently on a body you don't own. Go with what you've got. In fact, you can pretty much forget "FF" and "1.6" altogether. If you must, come back and ask the question when you've taken 5,000 or 10,000 frames 
These are just benchmark terms for those of us old timers who are moving from film, to give us a rough idea how our old film lenses will perform on a digital camera. Since you never used a film SLR, you don't have (nor do you need) that point of reference. As Olympus might say, you have no "legacy issues"- be grateful!
The whole beauty of SLR's is that you don't need benchmarks, yardsticks or formulas to compose your picture - what you see is what you get.