Ursa mini sdi

Hi guys I have the ursa mini 4K am trying to do live stream with the ursa mini 4K and Lumix Gh3 as a B-Camera there's a huge difference in the quality the ursa mini doesn't look as sharp as the Gh3. But the image on monitor if the ursa looks great. I don't know if am doing something wrong. The lumix GH3 by far looks way better than the ursa.
How can I improve the quality on the ursa. I need help.
Thanks
Dan


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