Is Vray physical camera 100% accurate?

[joecharon]

Hi. I have a question to Chaos group. Here are 3 images
of camera matched geometry. First one is from matching
software - everything fits perfectly.
Second one is 3ds max standard camera created from
imported data from matching software - everything fits perfectly.
Third image shows Vray camera converted from standard
camera and matching is not good now.
Vray camera is rotated slightly - about 0,4°.
Where is the problem?

http://img149.imageshack.us/img149/2352/camera1xs2.jpg
http://img84.imageshack.us/img84/2213/camera2xh0.jpg
http://img88.imageshack.us/img88/4695/camera3li0.jpg

[dcullipher]

Wondering if the Vray Cam is targeted. That has caused me grief.

[jujubee]

Slight camera correction applied possibly???

[vlado]

Nothing in computer graphics is 100% accurate to begin with; but for camera matching in particular, matching software is designed for a "standard" camera. If not specifically adjusted, the VRayPhysicalCamera will differ slightly from a standard one - e.g. the FOV might be slightly different depending on where you have the camera focused.

Best regards,
Vlado