great!

Now we do understand the Dolly cam a bit better, can somerun run similar tests for the Revolving cam? 

That's a good idea! I gave up trying to work out an exact value for the inherent offset value for orbiting cams ( http://www.renderosity.com/mod/forumpro/?thread_id=2880985  - roughly 1.2 Poser Units along the +Z axis was as far as I got.) But using the same test as the dolly cam (i.e. a 90 degree FOV, the diagonal stripes, and butting adjacent renders together) and the assumption of 1 inch sensor size, then a bit of trial and error with the +Z offset might be worth a try...

I may give it a go sometime over the next week (and I'll be reading your stuff on the revolving cams too!  :)  )

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The 3Dcheapskate* occasionally posts sensible stuff. Usually by accident. And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU or something else.
*soon only to be available in two flavours -  DAZ and Renderosity