[ptx] Re: post 0.5 "mapping" tab

[Carl von Einem]

There are even real world lenses that exceed 180 degrees, eg. the Nikkor 
6 mm fisheye covers 220 degrees. You can also use a stitched 
equirectangular file as input image to get rid of a wavy horizon.

Carl

From: "Philippe Gac" <tech at ediphi.org>
> 
> btw, it would be nice to have some restrictions on values
> - allowed range -90<pitch<90 (convert to pitch-180 and roll-180)
> - allowed range 1 < len_fov < 180 (not hugin dependent, alas)