I've been asked to provide some high resolution images for a glossy magazine.
I know how to softproof an image in CS3 and I know about tweaking it to match the pre-softproofed image (as described by Jeff Schewe) for printing with my printer.
But what printer/paper profile do I use if I'm producing a final image to send off for a magazine? Does it even matter? - After all, all those competition winners we see in photo magazines haven't optimised their image by softproofing. Should I ask the magazine editor for their printer/paper profile? Or is this something I need to ask the magazine's publisher.
Finally, I normally work on ProPhotoRGB. Should I keep the images in that colourspace, or convert them to AdobeRGB before sending?
Any advice from those with first hand experience would be appreciated.