There should be a moody index as well. I had a couple of minolta aslr cameras that were very fast, when they were happy. But if they thought all the settings were not perfect, they would just refuse to take the picture. I hated those cameras...

All my digitals are this way, they get pissy and refuse to take pictures if all is not perfect. I would love a camera that just takes the shot when I push the shutter button, correct settings or not.