let me shoot you a small bit of advice for you, and your new scope I.W. I would just jack it to the highest zoom at first, and then slowly work it into focus. That way you're only kind of having to worry about the focus, and you can spend your time looking at the trichs, if you get me. You should be able to get a nice look at max zoom, and get a real idea of where your plants are. Have fun with your scope brother, they're alot of fun. take er easy everyone. Peace, Light, and love.
EDIT: The best way of describing what a mature trich looks like is, and elongated hair like structure with a full roundish head, and has gone from translucent, to an opaque milky look, but not past into amber. I like em milky, some like em amber, you can debate that all day, I'm not getting into it personally.