"Nicolas Alvarez" <nic### [at] gmailcom> wrote in message 
news:495566c2@news.povray.org...
> All your images (especially the top one in the first message) have way too
> many JPEG artifacts :(
>

I did use a very high jpg compression because these are the images that went 
into the online documentation at 
http://lib.povray.org/collection/blockwall/chrisb%201.0/blockwall.html, 
where there are quite a lot of different examples, so I was conscious of the 
total dsplay time. Anyway, here's an 800x600 AA0.3 with a 90% jpg quality 
setting.

Also, when you download the object you can readily regenerate all of the 
images artifact free at whatever resolution you want using animation options 
+kfi0 +kff20 and by setting Example=frame_number at the top of the scene 
file. It takes about 15 minutes to generate the 19 images at 800x600 AA0.3 
using 3.7 on a 4 way machine (images 11 and 16 are blank).

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