> As long as only YOU render a scene, then, it's ok.
> If you create your scene and you plan to have it rendered at various 
> aspect ratio, then it's also workable. You made it so that it's complete 
> even if parts are not visible, and it's modeled outside the visible area.

Sure.

> If you create a scene using a specific aspect ratio and publish it, then 
> it's not ok anymore.

The problem is though the alternative is also not ok (but in a different 
way).  In extreme cases it's obvious, but if someone renders a 1280x1024 
desktop wallpaper at 1600x1200 it might not be obvious things are a little 
distorted.  Currently as scene-author you need to decide which behaviour you 
prefer when your scene gets rendered at a different aspect ratio (even if 
you're rendering it yourself, eg for different monitors).

As has been discussed many times here before, it would be nice for the scene 
author to have a little more control over the aspect ratio the scene gets 
rendered at, and for the person starting the render to choose what to do in 
case of a mismatch.

BTW the point in the FAQ about the "angle" keyword is clutching at straws, 
if you're already using the image_width and image_height variables, then 
just use them in the angle statement as well if you want to control the FOV 
differently.

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