Well, I've had a lot of problems with a printing shop, because they had a 
plotter, but the girl that knew how to use it wasn't there (she was outside 
for holidays).
So Slime's problem is very usual, at least for me. The formats is another 
problem too. I don't why, but some shops want a .tiff, others a .PSD...

The last year, I needed the print a poster for a congress and I put as a 
background a scene with a sky and clouds and I did all the images using 
POV-Ray. I decided to give the poster to the printer service from my 
university because our project only paid that service. The problem was that 
when I saw the poster was awful, all the colors were changed, there were 
extrange shadows... And the person from the service said that was my image, 
then I printed the image in a shop and, of course, paying the costs from my 
pocket and the poster was OK, like on the PC screen.

Regards,
Oleguer


news:430e9362$1@news.povray.org...
>> In summary: A pixel is just a color information you can interpret to have
>> any width and any height you like.  And that is what is referred to as
>> resolution.
>
>
> Good explanation; sadly it seems to be necessary to explain this a little
> too frequently.
>
> I've heard of print shops recieving images (must have been in PSD format 
> or
> something else that records dpi) and refusing to accept them, saying, 
> "this
> image is only 72 dpi, we can't print this." Change the dpi recorded in the
> image file to 300 (without actually changing the image data), and they
> accept it.
>
> - Slime
> [ http://www.slimeland.com/ ]
>
>

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