are you maybe looking at jpg images which have already been corrected in
camera and now the correction is applied twice?
j.
On Sat, May 4, 2013 at 11:23 AM, David Vincent-Jones
<[email protected]>wrote:
> darktable 1.3+107~g018e4f1 ... 64 bit
>
> I am getting significant 'pincushioning' (negative barrel) with the
> default settings for the
> Sigma 17-70mm. f2.8-4.5 DC Macro.
> With lens correction turned off edge verticals look correct but there is
> a well defined inward bow when the correction is turned on.
>
> Can somebody confirm this problem?
>
> David
>
>
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