gregjohn <pte### [at] yahoocom> wrote:
> i) no mention of how +W and +H affect the camera.

  Perhaps because those parameters don't affect the camera in any way?

  (Ok, there's an exception: If you use image_width or image_height for
defining anything in the camera block, then they do affect it. But that's
not all that relevant.)

> What if it automatically gave you circular-cross-section spheres regardless of
> the pixel ratio?  How many people *want* elliptical-looking spheres when they
> change the pixel ratio?

  What happens when you *want* to render the image for a resolution with
non-square pixels?

  (Yes, there are such situations, and they are pretty common. Search for
"anamorphic" if you don't believe me.)

  And if the aspect ratio of the pixels were always assumed to be 1:1 when
changing the resolution of the rendered image, which dimension or the camera
should change when the aspect ratio of the image changes?

-- 
                                                          - Warp

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