Hi, I'm just trying to get some half decent prints with some photos I've taken on my 400d, desaturated and edited in Aperture, exported 8bit tiff files, then placed in a layout in inDesign cs5. Then exported to pdf to print from in my uni print room. But when I print them the parts of the images which are meant to be the darkest are green, the rest of the image is decent. I've tried using loads of settings when printing but cant find anything thats resolved it and its using up so much money and card! The printer is a HP laser printer, pretty new I believe. I've tried printing in grey scale and obviously it only uses the black cartridge and comes out relatively washed out. Does anyone know much about this issue or how I can get round it? I also tried opening the pdf in photoshop (rasterising it) and then printing but it gave the same results. Luke.