I am newish to Lightroom and want to send my pictures to a friend who wants to print them in various sizes. In image sizing what should I select as I don't know the exact size of the image they will print ? Thanks
Agreeing with JoeKostoss, in this method, you send your friend every pixel in the image, and let him worry about changing the size of the image. If you do anything else, the quality of the image could be reduced by the time he does the print.