Simple low light high gain test between these two cameras. XA20, after zoomed in some to match the AC90, aperture at 1.8, the AC90 is open which I believe is 1.6. I did set the AC90's scene file to best match the XA using an external monitor and may have to tweak it some more after seeing the two side by side. Looks like WB will be the hardest thing to get close on these two since the AC only has two K settings 3200 and 5600.

Each camera has its strengths and weakness. If we could take the strengths of each and make one, we would have the ultimate video camera.

http://vimeo.com/akin/xa20vsac90