Almost all of my photos on A.net are scanned by my photo lab using a technology called ImageCD (still saving for my own film scanner). Note ImageCD is not Kodak Photo CD or Picture CD, nor is it a Fuji format CD. The scans at the highest resolution need to be reduced in size and can even be compressed at bit for uploading.
Click for large version
Photo © Ian Moy
I've never had one of these scans rejected due to poor image quality. Only problem is they are quite expensive to do here in Australia.