This is a very good question. There is not right answer or a specific timetable. On average a photograph that I take in during my travels can take anywhere from 15 minutes to "give it my Mojo" or years. I have learned, very recently," that a photograph has no timetable for when its ready. I would like to be able to process it rather quickly, but that may not happen. For example, I took a series of photographs in January of 2010. I knew they were good, but until I actually had the skills necessary, I was unable to process them correctly. Yes it was frustrating, but I didnt know what skills were needed. In the future, I might have to reprocess them again, depending upon my skill set. In other words, there is actually no timetable. I might be able to show my vision or what I saw in the camera, quickly or it might take years!