Gentlemen. I have a couple of lenses for my Olympus E510. 14-42mm, 40-150mm and 35mm macro. Among the things I'd like to do is get some good close ups of insects, reasonable landscapes and hopefully a decent moon shot. I'm good for landscapes but just can't get close enough for insects or moon (the thousands of miles from the moon tends to be a hindrance!). What's the trick with these?