I would like to buy a second body with full HD video capability to use alongside my Sony EX1. As a secondary purpose, the new body will be a backup for my D700 stills body. I have a range of FX lenses to fit the new body. Any recommendations for a second body regarding the quality of the video of the above options? I have tested the D800 video but don't need that high a spec camera. I just need the video to be as good as it can be - all other features are basically irrelevant.
Jaco, I don't know much about the video specs of these cameras but I would consider one with an interval self timing feature, in case you would like to build time lapses with stills. I have realized that I will keep my D7000 body in the future for timelapsing even if I have a new body like D800. Just in case..
I just got the 3100 because the video spec is the same for all of the cameras, so I might as well go for the cheapest. It has no intervalometer, unfortunately, but I shoot time lapses on the EX anyway, and have a time lapse dolley that uses a shoot-move-shoot controller to drive a stills camera - an external intervalometer, so to speak.