X-E1 AE-L and Auto ISO
Is it normal for the ISO to change even AE-Lock is set when the camera is set to Auto-ISO? I tested it by setting the AE-L to a darker object, then recomposed to a brighter area. The ISO changed from 3200 to 640, even when AE-L was set. The shutter speed and aperture did not change as expected. I thought this defeats the purpose of AE-L if the camera adjusts the ISO after exposure is locked. I tested it with manual ISO and it worked as expected, i.e., ISO, shutter speed and aperture did not change after I recompose to a brighter area.
I could not find anything in the manual that explains it.