Sun 09-Dec-12 11:50 PM | edited Mon 10-Dec-12 01:37 AM by LMMiller9
Of course, this is just my two sense: but, I think you are making a mistake in changing how you focus so often. You are maximizing the potential for human error. You don't need to be on AF-C auto and manually moving the focus point is very likely to lead to having the focus point in the wrong place on the following shot.
Simplify things. Complexity leads to error. Try just using single point, single focus, and use the center point (locked so you don't move it) and focus and reframe. I think the simplicity of that process will eliminate many of your bad shots if not all of them.
I also think you will do better leaving the camera on auto ISO. And, I would set a minimum 1/100sec speed. I think that will also increase the ratio of good to bad shots.
I think part of your problem may be that you are relying too much on your brain rather than the computer in the camera. Don't take this as an insult, but the camera can calculate all the variables of light, iso, speed, aperture and focus one hundred times faster than you can. That is why 90% of the time I have my camera on P mode. I focus on the picture, the subject, the composition itself, and let the camera calculate all that other stuff, which it can almost always do better than I can. Only when lighting is unique in some way, or when shoot fast moving birds, cars, etc., do I deviate from that. I think that is a lot of the reason I love the camera.
About the advice for higher shutter speeds: I think that advice is valid when handholding. If using a tripod you can slow down to your hearts content. But, the high pixel count does increase the effect of hand movement.
Also, do you find that you get more in focus shots with your VR lenses? I suspect that you do.