cin19 said:
Are you sure you try to in the C.Fn section? Here is from the manual: " If C.Fn II-3 [hignlight tone priority] is set to [1: Enable}, the settable ISO speed range will be ISO 200-1600. (p164)" "With C. Fn I-3 [Set ISO speed range], the ISO speed range can be extended to ISO 50(L) to 3200 (H). (p158) "
The manual is always your friend.
.......I have tried that, i was happily using ISO 100 and L for the past few weeks, now it wont dial down, I have been thru the manual and wondered f it was a common glitch