When I received the lens Samyang 8mm lens of Sony E-Mount version, I found it so small, perfect to go with the Sony A7r. EXIF between the lens and the camera are not transmitted, it makes assembling a little more difficult, but it is not catastrophic. However, are the panoramas will be good? The answer is YES, beautiful picture, okay, not the best in the test, but a very good end result, I am convinced. The Sony A7r - Samyang 8mm will not leave, I keep it.