The E1s have a separate focus eye-piece. The FFII you focus by turning the whole ocular bell.
I've owned a number of E1s. They had good glass and etched reticles. But there some disparity in them. On some, I could turn the power ring with a finger. On others, it was so tight I thought I would twist the scope in the rings trying to move it. Same with the ocular focus. In the end, I sold them all. I still have a 2-7X that I tried on a springer air gun. That pretty much ruined it. It won't even hold zero now on a .22 auto for more than 10 rounds or so. I just wanders off zero.
