Here the shutter lock is in the unlocked position. What you might find surprising (I did ;-) was the way the whole shutter front plate then rotated once this lock had been undone. If you compare this picture to the one above you will notice that the speed setting ring appears to be 30 or so degrees further clockwise round. However it is actually just the shutter front plate which has moved 30 degrees in the opposite (anti or counter clockwise) direction. This can be confirmed by noticing that the relation of the shutter speed ring to the 2nd element lens notches has stayed the same.
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