Just been searching everywhere for software in the past 24 hours...
Celtx has a basic free mode which may suit? Attaches to your script and whatnot, so while basic, it's well integrated at least.
But if you want professional boards... I think FrameForge...and if you can draw - Toon Boom is supposed to be good.
Storyboard Quick, and storyboard artist are exxxy and reviews state definitely not worth the money.
Personally nothing has impressed me enough for the coin - so I'm going to use an artist again.
I've used FrameForge before, but I'm starting to wonder if there's value in just using floor plan views to show actor blocking, camera setup/fov, camera motion, and leaving the details of set design, locations, textures, etc out of the equation at that point? I just see so many different skill sets at play (and crew positions) to make an accurate storyboard.
I guess the answer to my question depends on the ultimate use of the process.
Good if you have a watcom and can minimally draw. When you draw (as opposed to when you model 3D), you focus on what's important in a story board, which isn't about getting the light reflection right.
FrameForge. Very Powerful. In fact, maybe TOO powerful. You can do so much with it, that it's very easy to get carried away with planning every detail of every shot when you may not need to. For some, like me, the planning is the fun part. So, if you're detail oriented, it's awesome! If you're not, it's still awesome, as long as you know when to stop planning and start shooting! In fact, I started just using the "tweening" feature and making full-on animations.
I posted them here:
http://www.youtube.com/user/MajorKeyframage?ob=5
Oddly enough, for my latest "Spare Parts", I actually storyboarded with pen and paper and used the storyboarding software to animate the story. I know, kind of defeats the purpose.
Sketchup - AFAIK - doesn't have any tools to integrate with writing apps but it's free, has accurate lens settings, basic lighting and is very, very easy to learn.
Hey, if you have an iphone (or an ipad), Cinemek Storyboard Composer is pretty great. It works really well if you have access to your locations or even something similar... you can show up with the actors or some stand-ins (they also have digital stand-ins in program) and time out/block your shots. As far as instant feedback, quick touch based editing, and ease-of-use, nothing beats it.
I LOVE Frameforge but it is very easy to get carried away. The last thing I did, I literally nearly recreated the entire neighborhood where it was taking place... the con is that it was time-consuming, the pro is that it gave me new ideas as far as camera and told me that some weren't such a great idea. However, I did a short on 35mm with a very low budget (hence, not a lot of film/takes to work with) and we wound up with almost exactly what was in the boards, give or take a few improv scenes. But the major action was covered in the same way. When you're just starting out, I'd say that having good boards helps everyone on set believe that there's a plan... it even helps with the money people. The same can be said for some good illustrations of major props, sets, characters, etc.