The Nikon D40 has an option in one part of the menu that lets you choose how much you see in another part. If you are never going to use all the options in the menu this could be a good thing, but if you are trying to set the ISO to auto you will have a problem.
To see all your options in the Custom Settings Menu, follow these steps:
- Press "Menu" on the back of the camera
- Navigate to the "Setup Menu" (the wrench)
- Select "CSM/Setup menu" and change it to "full."
This will expand the options you can see in the CSM menu. And now you will be able to see "10 ISO auto."
