Comment 4 for bug 696091

I see something slightly different, firstly there are odd distortions with 'tops' or 'bots' > 0 in some photos but not all photos, similiar to 'over amplification'.

But there is actually another severe bug: which is that negative numbers have the same effect as positive numbers. The intention with these General Pannini parameters is that you can use them to both 'stretch' and 'compress' the top and bottom of the image, with Hugin as it is now you can only 'stretch'.