You never know with a handheld photograph. Will it be sharp? Or will it be a smear. But for this week's Shooting Challenge, we shared a simple trick to make sure your shots come out great, no matter the camera.

Ever take a handheld photo that you thought was amazing, only to see it larger and realize that you totally blew it by shaking the tiniest bit? Well, you can limit these mistakes using a simple rule.

F-stop is to photography beginners what inorganic chemistry is to an MFA graduate: some kind of black magic that only makes sense to experts. That said, I'm sure plenty of seasoned photographers use f-stop numbers without knowing what they really mean, too. But no more, because this video explains the concept in a…

Lenses. They're your most powerful photographic tool, if you know how to harness their mighty power (and manage not to shatter them). And you know what? Chances are that even if you think you're a lensmaster, you've still got a lot to learn. And these guys are going to teach you.

So you want to snap some detailed shots of the moon's surface, but you're over 200,000 miles away and lack any sort of telescope. No problem! At least if you have a bevy of focal length extenders. Improvised astronomy!