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If the lens now focuses closer than before, it means when you put it back together you wound up with the front of the lens further from the camera's sensor than before. Is it possible you flipped a part with an offset meant to place the front of the lens further back? And by flipping it you would have wound up with the front of the lens further forward?

It might also be possible you didn't screw the front element group completely back into the filter ring. If the washer is also threaded (It's hard to tell from the service manual) be sure the washer is flat against the front group unit when you screw both into the filter ring together.

If the lens now focuses closer than before, it means when you put it back together you wound up with the front of the lens further from the camera's sensor than before. Is it possible you flipped a part with an offset meant to place the front of the lens further back? And by flipping it you would have wound up with the front of the lens further forward?

If the lens now focuses closer than before, it means when you put it back together you wound up with the front of the lens further from the camera's sensor than before. Is it possible you flipped a part with an offset meant to place the front of the lens further back? And by flipping it you would have wound up with the front of the lens further forward?

It might also be possible you didn't screw the front element group completely back into the filter ring. If the washer is also threaded (It's hard to tell from the service manual) be sure the washer is flat against the front group unit when you screw both into the filter ring together.

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source | link

If the lens now focuses closer than before, it means when you put it back together you wound up with the front of the lens further from the camera's sensor than before. Is it possible you flipped a part with an offset meant to place the front of the lens further back? And by flipping it you would have wound up with the front of the lens further forward?