Ok managed to get to 2 nodes
1) set back to origin in translate (easy)
2) invert rotate order and negate rotation
Howard
>________________________________
>From: Howard Jones <mrhowardjo...@yahoo.com>
>To: Nuke user discussion <nuke-users@support.thefoundry.co.uk>
>Sent: Thursday, 11 August 2011, 12:59
>Subject: [Nuke-users] Zeroing a camera position
>
>
>Hi
>
>
>Easy when you know how I expect,
>
>but is there an easy way to null/zero a moving camera at a specific frame,
>like a reference frame in a tracker.
>
>
>At the moment I am using 4 axis to
>
>1) set back to origin in translate (easy)
>2) rotate Z back
>3) rotate Y back
>4) rotate X back.
>
>
>I then end up with a zero'd camera at that frame so I can add another axis to
>match the position of another camera.
>
>
>I've tried this in one node but cant do it and tried reversing transform/
>rotate orders, but couldn't get it to work (yet)
>
>
>The above works but seems awkward and makes me feel thick. (but is the 3D
>equivalent of how I would invert a serise of tranforms pre the invert button)
>Howard
>
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>
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