I don't have a great deal of experience with photography other than set it on auto point and shoot; hence the purchase of the cheat sheets. I thought I would try the nature and architectural settings yesterday while I had some spare time. I found when I had all the recommended settings the camera would not select Auto ISO. The camera gives the message "this option is not available at current settings or in the cameras current state" when the settings are displayed on the LCD screen the letters ISO-A and ? are flashing. Am I doing something wrong or is the normal?