Hi Rich,
Yes, I understand, but an iteration count/pixel is just another "image", with each pixel being a 16-bit value, right? This involves taking a PNG image and storing the iteration count as another PNG image inside a custom chunk.
OK I understand. I see where you are coming from. Would we use the fRAc chunk for this? We need to define a few standards before we go in too deep. Any comments? Thanks, Paul. ---------------------------------------------------------- Paul de Leeuw Computers Central Coast Australia Email: pdeleeuw@deleeuw.com.au www: http://www.deleeuw.com.au ABN 72 360 822 562 ----------------------------------------------------------