In article <3ca75d03@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

> > +a0.1 at a higher resolution simulates a minimum depth of anti-aliasing,
> > without forcing full depth for all pixels.
> 
>   Yes, but rendering at higher resolution forces povray to shoot more rays
> even though it wouldn't be necessary.

+a0.0 forces it to shoot all the rays for every pixel. Rendering at a 
higher resolution and resizing lets you control the minimum sampling 
density (making your objects more likely to be visible) while still 
taking advantage of adaptive sampling for faster rendering.
An additional "minimum samples" control would do the same thing, without 
the additional external step of reducing the final image in size, which 
will give different results with different programs.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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