Went out for a stroll on Saturday and found a few things that I thought would make some good B&W shots. I had my camera on a tripod and it set to A mode. I figured that I would use the MLU to keep the camera completely still. However the camera fired and then locked up. I figured that the camera was reading the scene through the stopped down aperture. I had to release the mirror to shut the shutter. So I went to manual mode and it worked like a charm. SO is the MLU just not usable in A mode or am I missing something.?