As glasses Trager I always had the problem that I could see the viewfinder of the 60D incomplete. The Extender should there be an improvement. And in fact, this part increases the comfort considerably, now I see the whole viewfinder image. These results as a pleasant side effect that the nose now has more space. Unfortunately, due to the physics the viewfinder image clearly smaller. The first is so uncomfortable and unfamiliar, that I had the part sent back almost. I habs but then trying times, and lo and behold, after a while a fall is no longer on, you just get used to it. Meanwhile, I am very satisfied and would recommend to try it so that eyeglass wearers well. At 15 the risk is indeed manageable (and Canon accessories is unusually cheap). I take a star off for the small viewfinder image for the part actually technique requires nothing can, but this is indeed a subjective review ;-). Otherwise: all good!
