Skip the cameras and scopes unless you're really THAT curious. Focus more on the pistils and look of the bud as it flowers. I'd say like 90% of home growers harvest weeks too early. You want the pistils to turn brown, then recede into the bud and even then give it a little longer to fatten. This hobby is a patience game, and if you're impatient, all your hard work will go down the drain.