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Question: Video Quality of JVC-GRD850 Camcorder

1) Hows the overall Video Quality, low-light video quality say in dimly lit environments, is it free from substantial noise?
2) Hows the White Balance, Aperture settings, any Gain Control options for low lighht shooting?
3) Hows the Image Stabilization when fully Zooming out?
Thanks,, Kaushik