I've uploaded some images below that show that the purple flaring I have in my images is due to the lens. Luckily I had done some trials of different f-stops with the Samyang 35mm last night on the same part of the sky! Four crops at f1.4, f1.8, f2 and f2.8 are shown below via the links. The only problem is that they are not necessarily the same exposures - I hadn't planned on doing this test! - but it still shows the flaring problem. It's most evident at f1.4 and f1.8 but not so evident at f2.8 (even though I managed to move the camera slightly that elongated the stars!).
Crops from images of the Nikon 14-24 at 14mm and the Nikon 80-200 at both 80mm and 200mm below don't show any purple flaring. There is slight blue flaring in both these lenses however when used wide open at f2.8.
Let me know your thoughts.
Wayne
http://www.flickr.com/photos/2900549...ream/lightbox/
Samyang 35mm f1.4 ISO 3200 15sec
http://www.flickr.com/photos/2900549...ream/lightbox/
Samyang 35mm f1.8 ISO 3200 10sec
http://www.flickr.com/photos/2900549...ream/lightbox/
Samyang 35mm f2 ISO 3200 15sec
http://www.flickr.com/photos/2900549...ream/lightbox/
Samyang 35mm f2.8 ISO 1600 15sec
http://www.flickr.com/photos/2900549...ream/lightbox/
Nikon 14-24 at 14mm f2.8 ISO 6400 20sec
http://www.flickr.com/photos/2900549...ream/lightbox/
Nikon 80-200 at 80mm AFS f2.8 ISO Hi1.0?? 5sec (ISO not recorded in EXIF!)
http://www.flickr.com/photos/2900549...ream/lightbox/
Nikon 80-200 at 200mm AFS f2.8 ISO Hi1.0?? 5sec (ISO not recorded in EXIF!)