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You are going to get motion blue with fireworks. In fact that is what you want to capture. I actually should have used a longer shutter speed. I was shooting f22 so the depth of field was ok. I could have changed to ISO 100 and that would have increased my shutter speed. I was shooting with a tripod and a cable release. I put it on continuous the the released locked and the camera just kept shooting.

I agree to have longer shutter speed. Fireworks shooting is like light painting.

Yes exactly. Only with fireworks you only get one chance per year unless go disney or something.