Optically I was really surprised by how well the Samyang performed, as good or better than the 16-35mm however I found the manual focus very touchy making it more of a guessing game.
Greg I think it was you that planted the Zeiss seed in my head
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Yes that's right. It should be an AWESOME lens. I have seen some comparisons with Nikon 14-24 which is the usual standard widefield lenses are compared to. It was better in most regards and probably most importantly to us with regards to distortion and coma and wideopen performance in the corners. So if it beats the Nikon 14-24 it must be hot as that lens has now been around for sometime now without any real challengers.
I look forward to your results.
Greg.