… there is an offset applied if the target curve is set, the camera is placed below the curve. Please look at the example file.
Best-
Micha
Camera Bug 2PointPerspektive.3dm (94.9 KB)
When I use the Camera command on Perspective View of your example model, I cannot see anything to be wrong.
Can you please discribe exactly what it is faulty?
I used Bongo 2.0 in Rhino 8.0
Luc
You don’t see it but it is at your screenshot to see. 
(The target marker should be placed on the target curve.)
OK. Now I see. How unseeing can one be?
It’s a weird thing this 2 Point Perspective. The term alone gives me the creeps. It is a hideous simplification of perspective projection that inevitably pops up in ‘Perspective for dummies’ literature.
Nevertheless, I dug into it. In Rhino’s ‘2 Point Perspective’ the projection plane is forced to be vertical in order to get something that approaches the function of a technical camera which often used for architectural photography of architecture.
The basic idea is to keep vertical elements parallel in the image. The resulting image is fine as long as the main line of sight (the line camera point to target) is not too different from horizontal.
And yes indeed, Bongo does not keep the projection plane vertical when the target or the camera-point is animated via a constraint. Nor is the target positioned correctly. I made an issue on the buglist.
For the Parallel and the Parallel Reflected Views all Constraint animations are disabled. So why not for 2 Point Perspective?
Luc
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