I received my Zacuto Z-finder yesterday, so I had to leave my 7D for 24 hours until the mounting frame was securely attached. Today, after getting back home around midnight, I wanted to test it a little before I go to bed. (Note: this is a very quick test) 3x magnification is really nice. A big difference. However, you should know that each pixel on LCD is blown up 3x so it looks sharper WITHOUT..