Insight through the eye cup perfectly. Round rotation for ground-level shots. Bright and clear image, which is adjustable by the Dioptienausgleich on the eye. This setting is, unfortunately, very smooth and therefore easy to adjust the Händling. The included case is quite tight. Magnification switch and adapter are 1A Canon quality.
In summary: a very useful tool for the ground-level macro shots but also his (Canon usual) price has