The first time I lost the eyecup I was on vacation and taking lots of pictures, many of which were in bright sunshine in the middle of the day. With the sun high in the sky (in was June) I would have to put my hand over my forehead to keep the sun from getting between my eye and the viewfinder. And after trying that a few times, I switched over to my second camera, a Panasonic GH2. I didn't view that as a downgrade, as my plan had been to alternate days with these two cameras.
Two days later I found the eyecup, in the bottom of my camera bag. After losing it again in the camera bag I realized that because the eyecup slides down on two rails on the side of the viewfinder, like a double hung window, it easily snapped up/off if you pull the camera out of your bag with the shoulder strap. The strap would sometimes slide up over the camera body as you pulled and this would snapped the eyecup upward and off its tracks.
Since both times that I lost the eyecup I soon found it, I didn't think much more about this camera "fault" until this winter when I realized that although the eyecup was intact, I had nevertheless lost the rubber gasket that surrounds the eyecup on three sides. This again is a weak design. The rubber gasket was held on with three points of glue. I think the rubber gasket should be designed to surround the eyepiece, else it be torn off easily.
|Eyecup without the rubber gasket. Usable but I don't want|
to scratch my glasses.
|Eyecup slides off with upward motion|
Anyway, I have now replaced the eyecup with a fresh new one, and I have one more in reserve for the next time I (inevitably) lose it.
|Ah, replacement eyecup installed! Thankfully|
Adorama had this item in stock ($10).
By the way, when I called OlympusAmerica they informed me that this was not covered under the warranty and that my problem was not viewed as a manufacturing defect. (Of course, I feel the manufacturing of the part was just fine; the real problem is the engineering).
... I still love this camera.