PanoTools:
PTLens parameter interpolation
Gerard Winkelmuller 2005-Mar-31 15:48:21
If I now the PTLens parameter a,b,c,d for a given lens and for a full
frame sensor, it is possible to compute the parametre A,B,C,D for an
APS-C sensor.
I found following relation between A,B,C,D and a,b,c,d:
if s is the sensor factor (example s=1.6 for canon D20)
A = a/(f s^2) B = b/(f s) C = c/f D = s d / f
with f = a/s^2 + b/s + c + s d
are these relations true and are the full frame parameters enough
accurate to do this transformation.
thanks
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