In this small review http://www.aps-photo.com/2014/04/rokinon-12mm-f2-0-for-x-mount-a-first-look/ , just above "Conclusions", there are two shots taken with Fuji 10-24mm and Samyang 12mm. They provide absolutely different color rendition, while fuji is perfectly balanced the one by Samyang looks too vivid. Never thought that the lens itself can change the colors this way.