I just had an interesting revelation in a lab. The operator let me have a\nlook at the edit software that queues the files ready to print, it also has\nan auto correct function. While I was looking at my already corrected in\nLightroom files going through I noticed that it was auto correcting them and\ndoing a mighty bad job, blown highlights, blocked shadows, colour changes,\nnightmare. I asked the tech what was going on and he said that in his\nexperience that the files that were from Lightroom, Canon DPP, or anything\nother than Photoshop, they were auto corrected and IT CAN"T BE TURNED OFF,\nEVEN WHEN IT WAS UN-TICKED IN THE PREFERENCES. As I was getting 200 9x6 inch\nprints and it was 2/3rds of the way through I asked him to stop. Then we\nexperimented and it appears that Photoshop saves the file with an icon and\nthe others don't, we couldn't see any other obvious differences so the\nFrontier printer must make adjustment to files without an icon. Bizarre but\ntrue. I am going to go to a lab with a Noritsu printer and I'll take two\nidentical files, one saved in Photoshop and the other from Lightroom and see\nif it does the same thing. You have been warned. If any one has any other\nexplanation I would be glad to hear from you.