John Hill 
, Feb 09, 2012; 04:04 a.m.
Andrew, someone just ordered a low light 24x36 print from my Smugmug website. Since it was a larger/more expensive order I was concerned that it was a bit too grainy (older photo taken with a retired D70) and contacted Smugmug about this and to double check their warranty policy if customer was unhappy. They replied back that were more concerned about the darker areas of the photo and suggested that I lighten the waves and reflections in the water. Their reason was: Photos will display 1.5-2 stops brighter, on today's highly backlit monitors, then they will print. And they will also print with much less dynamic range (highlight and shadow detail).
Here is my image after I made the waves and sunset reflections lighter. Hope this works. It is still a little dark, but this is what the customer wants:) http://photo.net/photodb/photo?photo_id=15132972
I had second thoughts but I did leave auto-correct checked. I figured that if there was a problem with the colors, then it would not be all my fault:) They also assured me that their warranty is 100%. I have never had a complaint with over 1,000 images sold through Smugmug. Pretty good track record for them.
I always use EZ Prints when ordering through Smugmug but they also offer Bay Photo for a little more $. Bay Photo offers high-end color correction.
Check out the lab comparison test- http://www.smugmug.com/photos/pro-print-labs-compared/
Hope this helped. John
