ISO question Pentax K-x user had my camera for four years suddenly can't change ISO to 200 only 400
I thought I used to be able to get ISO 200 on my Pentax K-x digital SLR. Now only auto ISO 400 shows as lowest number. I can't seem to change. I must have pushed the wrong button one day to set the camera to this but have no idea what I did or how to change it.