before buying the third party lenses
The one thing about the Samyang (AKA Rokinon, Bower, Pro-Optic) 14mm is that it has killer complex mustache distortion - not merely the usual simple barrel distortion, which is easy to correct even if you don't have a lens profile. Not good for architecture. I have found that the user-generated Adobe lens profile on it is good enough for landscape correction. I have not tried the profile on architecture.-- hide signature --
That software is good at correcting lens distortion & curious how good it is with the Samyang lenses, especially with the 10mm getting ready to be released.