Module 9? I'm not sure that really applies to what I was referring to. I'm uploading one image which could be bought by someone printing an 8x10 and then someone else wanting the same image as large as 60x40.
I shoot mostly landscape, nature, etc. and will be selling my prints online. Since there are various sizes and media to be printed on, should I still sharpen - even if it's not as much as I normally do - before uploading the image?