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Hi John.
I have the same setup as you. I also have an F/6.3 reducer.
The reducer can be used, but to use it with a camera, the optical train needs to be shortened, in order to reach focus. Pretty much the same as visual, I guess.
I use a Canon 50D with mine, and the only setup that works with the reducer is this one:
telescope>reducer>2-inch adapter>t-ring>camera
Anything else, and focus can't be reached.
You don't need the reducer at all if doing deep sky. The reducer will give you a wider field of view, at the expense of zoom. The same item at f/10 is a lot "closer" in the image/eyepiece than at f/6.3.
One thing I have noticed with my reducer (which is not a corrector)... due to the fact that the ACF optics are flat to the edge of the field, having the reducer on for imaging, causes vignetting of stars at the edge of the images.
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