[andy153]

Hi there -
as some may have noticed I am playing around with a Sigma 12-24 mm DG lens - this is the full frame version and it's on a Full Frame camera - so 12-24 IS 12-24. Previously I have been using similar lenses but in DX frame versions so a 12-24 is really an 18-36 where distortion is barely noticeable. I notice that people in the shots so far are quite badly distorted -

Can I ask at what stage of post processing do others correct lens distortion - is it the first thing you do? Also is there any recommended Mac software for this or does the lens correction in Photoshop do the job satisfactorily? Thanks - Andy