[magick-users] Barrel / pincushion distortion

[Wolfgang Hugemann]

Playing arount with the "new" -distortion option, I was surprised that 
it doesn't support barrel / pincushion distortion. Wouldn't that be easy 
to involve?

There are astonishingly few programs on the market that perform this 
sort of transformation / correction. Recently, I have been experimenting 
with PTlens and found its results in short focal length correction 
surprising. (Or, to put it the other way round: I was surprised by the 
extend of distortion that normal digital cameras produce at short focal 
lenghts.)

The good thing about PTlens is that the correction factors for most 
digital cameras are already in its database and that it readily extracts 
the focal length from the EXIF data and corrects the photo accordingly. 
(And that it allows batch processing.)

I instantly thought that this could also be done with IM (without having 
to use the -fx operator). But it can't at the moment -- right?

Greetings from Germany
Wolfgang Hugemann