You probably were wondering what I was talking about. I messed myself up and it was due to the focal length change and the flash. Separate issues. Even without the flash on, if I had been paying attention to the shutter speed between shots I would have seen the difference in shutter speeds.
Once I set up my first shot I never checked the second or third one. I thought because I was in spot it should have been the same but spot metering is not pin point and I was changing focal lengths due lens creep while chimping. I have always known as soon as you move your camera over even a bit and press the shutter button the shutter speed changes.
Then I started wondering what was my camera was doing? I thought it was making adjustments on me during exposure. When I set up in AV and let\'s say it is F 5.6 and the shutter is 400 I never check to see if it recorded those numbers I had seen in the viewfinder. I just check the histogram. Viewing them at home I was expecting the shutter speeds to be the same and they were not so it threw me off.
Someone pointed out this NEVEC to me which probably did not help.