The Canon Eyecup EB is significantly larger than the standard eye cup, it occurred to me the same as a very, very pleasant. The cushion rubber that closes the eye is much higher and wider than the standard, which was mounted on the camera. He offers through its soft rubber compound a very pleasant eye contact. This size difference struck me immediately very positive. I can now look even better through the viewfinder and perceive the visual field better.
The perceived quality is Canon's typical high quality, which I did not expect anything else. The assembly is done in a few seconds, the eye cup is mounted only by a horizontal sliding.
All in all: A very small, but all the more meaningful accessory for Canon D-SLR. Wonderful.