I processed 24 pictures through Lightroom the other day and uploaded them to WalMart's photo lab for 4X6 prints. I cropped and sized all the pictures to 4X6 aspect ratio, and after making all adjustments I wanted I saved them as sRGB, 300 dpi jpegs with 0% compression. The pictures look good on my 2 monitors, and on the monitors of 2 other computers. Colour is nice, brightness is good. One of the photos can be found in my gallery: http://www.photo.net/photo/6613446 so you can see what they look like. Anyhoo, the pictures came back terrible. Way way too dark. I called to ask WalMart if I had done something wrong on my end but the salesperson was lost at "sRGB" and couldn't offer any advice other than "don't edit them on the web". I was wondering, is there something I am missing? I suspect that had I sent them pictures straight from the camera they might have printed fine, and that the PP somehow caused a problem for their printers - is this possible? Any advice on anything I have missed in sending Lightroom/Photoshop edited pictures to WalMart (causing unsatisfactory prints) would be appreciated. Thank you.