47312Re: [PanoToolsNG] Re: What is the actual Field of View?
- Jan 7, 2011On 2011-01-06 7:27 PM, panovrx wrote:
> Some lenses eg. the 10.5mm Nikkor on full frame can give you a good stitch with a fairly wide range of fov because of the magnification effects of a, b and c eg. from 190 to 200. So I usually force the optimizer to accept a fov of 196 and an a of -0.16 until towards the end of the optimisation process. Only after I iterate point pair elimination and get the error average down to 3 or 4 pixels do I start to optimise fov and a, b and c generally. But for many purposes a wide fov range of values might look ok with that lens.Because of the way radial distortion maintains the FoV on the shortest
dimension, if your images were rotated to portrait mode then I suspect the FoV
would be more constant regardless of radial correction values.
See recent discussion on Hugin's list.
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