Not too difficult to make a nice screenshot once you have an idea how to navigate within the film viewer.
First, you get the film viewer paused at a good spot and visualize how you want the shot to look.
Then navigate with the arrow keys, num pad, and page up and down keys from the Internal view with Pan selected. You are able to completely control your position, except for roll. Get a bit of distance from the planes and zoom in on them with the Z button and adjust with the [ ] buttons. Zooming gets rid of the fish eye look and makes the planes appear closer together.
Then hit the print screen button and paste it into your favorite image editor.
