...on my E-M1. I got this camera last year after it had been in production for about two years. I must say I've been concerned about all the internet talk of the rear dial failure. Mines' been working flawlessly but there is a very distinct difference between the two dials. The front dial is very easy to turn with just the slightest effort of my pointing/shutter finger. What is the name of this appendage? Back to the post, the rear dial is much stiffer to turn but my thumb is much stronger than my fingers so it's not a problem. My rear dial always clicks firmly in place and it's motion (based on my thumb) is smooth just as the front dial is smooth. The thing I wonder is do you guys/gals think that maybe Olympus has replaced this part since their early production runs? If your rear dial failed did you notice a different feeling between turning this rear dial compared to the front dial before the failure? I guess I'm hoping for a little reassurance in my main camera. I'm also thankful that for some odd reason I bought a 3 year extended warranty which I normally never do. Maybe my ESP kicked in when I got this gem of a camera.