print bitmap on a specific resolution

Question

Hi,

I have several large image files (32bpp, 50 megapixel) that I draw on top of each other, because they are partly transparent. I want to print the images on the PrintPreviewDialog. If I draw directly on the PrintPage the resolution is super but the printdocument is huge (200Mb) If I draw on a bitmap that has the size of the paperformat the size is good but the resolution is terrible.

How can I control the resolution and the size of the resulting printdocument to get a good result?

JosP