![]() The model name may be "none", "pa", or "acm". The library will interpolate the parameters for between the sample points if necessary. This kind of calibration requires relatively many sample points since it depends on three variables. The model name may be "none", "linear", "pol圓", or "acm". The library will interpolate the parameters for intermediate focal lengths. ![]() The model name may be "none", "pol圓", "poly5", "ptlens", or "acm". Distortion is specific for every focal length in mmso you can declare multiple distortion entries with different focal values the library will interpolate the parameters for intermediate focal lengths. Typically, they are the result of the very same parameter optimisation. The real focal length must correspond to the distortion coefficients. However, Hugin's results need to be rectified. The images must overlap by at least half an image width. It uses the nominal focal length as a fallback. ![]() ![]() Lensfun itself needs the real focal length for lens type transformations. Especially for fisheye lenses, both values can differ significantly. ![]()
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