Visualizer for Sketchup is one of the newest render programs to come to Sketchup. If you've ever looked at rendering programs for Sketchup, you'll know there are a lot. Visualizer isn't going to win as the renderer for the next Avatar, but it certainly wins for being the easiest, most fun, and fastest I've used, by a lot.
Once it's installed, all you do is is just start it up, frame your shot by moving around in Sketchup, and let it run. Most renders take just a minute or two. Below is a gallery if a few that I just did in the past few weeks.
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You may notice that some of the foreground and backgrounds of these renders are blurred. There is no post processing done here, it's all happening inside Visualizer. Just like a normal camera, Visualizer has a "depth of field" adjustment. This is much like an aperture adjustment in a camera. To adjust this, all you do is drag the depth of field slider, and then drag the target to what you want in focus:
Here I have the closest tube in focus. I did this just by adding a little depth of field and setting the target to the front.
In this one I've done the same trick but put the focus on one of the middle tubes.
I love Visualizer, it's fast and downright fun to use. Most renders take just a minute or two. It's my new "screenshot" for Sketchup. At $20 bucks it's a bargain of a renderer. I definitely recommend checking it out.