Nodal Point HelpYes, I know, this question again. But I know many of you love challenges and enjoy teaching others.
I have been creating 360 panos since last fall with the following set up- Realviz Stitcher, Canon Digital Rebel with stock lens, and a Kaidan QuickPan system with Spherical Bracket.
However I just got my Sigma 8mm Fisheye this week and I have been playing with it for the past day and a half. I love it and I found Panoweaver to be very easy to use.
I have been doing some experimenting trying to find the nodal point for this lens and I feel I might be missing something. I have create a series of images from several points on my set and they all seem to produce some offsetting of the tripod head stitch. Anyone interested in taking a look and letting me know which setting seems the closest?
The images are at: http://www.uvm.edu/~khytten/nodal_pt/
They start with Testing_63-R1765
And end with Testing_80-R1765
The numbers 63 and 80 correspond to points on my bracket, 65 is forward and 80 is back. The R number is the radius of the circle, I altered that a little because of something I read in another post that Dave did regarding nodal point adjustment. I have looked at Daves nodal info at 360texas and I had tried using the gold ring on the Sigma as the nodal adjustment. It seems the series of images I have taken are slightly ahead of center and back.
Thanks for the help!