01-17-2011, 03:54 AM
[quote name='Rainer' timestamp='1295175978' post='5571']
Well, to be called "rectilinear corrected", the projection used in the lens
must follow the formula
FOV (rectilinear) = 2 * arctan (frame size/(focal length * 2))
as good as possible ... since it is this projection formula that
keeps the straight lines you see straight on the image you take.
So, yes, the better the correction of the lens, the more accurate it
will follow this formula.
[/quote]
Thanks and that's good news. Because DXO has a correction for the volumetric distortions from wide rectilinears, so it's good to know that at least there's only one type of rectilinear projection for them to attempt to fix.
GTW
Well, to be called "rectilinear corrected", the projection used in the lens
must follow the formula
FOV (rectilinear) = 2 * arctan (frame size/(focal length * 2))
as good as possible ... since it is this projection formula that
keeps the straight lines you see straight on the image you take.
So, yes, the better the correction of the lens, the more accurate it
will follow this formula.
[/quote]
Thanks and that's good news. Because DXO has a correction for the volumetric distortions from wide rectilinears, so it's good to know that at least there's only one type of rectilinear projection for them to attempt to fix.
GTW