I use canon 8-15 fisheye lens , What should I write in nodal in t&c panorama control?
ThereÂ´s nothing to write into the T&C about the Nodal-point which would be vital. In the configuration program - when you store lenses and camera - you can put in the NPP-info. But thatÂ´s only a reminder for yourself.
You donÂ´t need it. ItÂ´s not related to any calculations. I guess you know how to find the NPP for your combination?
To get informations about the position of the NPP at which focal-length you must contact Canon. The position changes with focal-setting and aperture.
I use a 15mm Canon fisheye - here itÂ´s 4,5cm from the lenseÂ´s base to the front-lens @f8/11.