"JUMPER•CAM" script will help you to replace all scene cameras (different types) with the single 'free' camera.
By barigazy at 2011-12-02
• Support variety types of cameras > (Standard, VRayPhysicalCamera, FinalRenderCamera, BrazilCamera)
• Transfer camera animation > (position, rotation, fov)
• Manual adjustments > (fov, target distance, shutter speed, aperture [f-stop], film speed [iso])
• Manipulate the animation in 'full screen' mode
• Different Grid/Info types
• Read/Write camera notes
• And many more features...
Written and tested on 3dsMax 2011 x64 and 3dsMax 2012 x64, but it may work in older version.
UPDATE (v1.1) -> fixed some bugs and added installer support for 2013+