07-01-2016, 11:02 AM
(This post was last modified: 07-01-2016, 12:14 PM by chrismiller.)
they are fine on the a7s, Colour shifts are present on the a7 and a7r. Admittedly the cost saving on the older 15mm is offset by the premium the a7s commands over the a7.
eg: http://www.stevehuffphoto.com/2014/06/20/quick-test-sony-a7s-and-the-voigtlander-15-heliar/
eg: http://www.stevehuffphoto.com/2014/06/20/quick-test-sony-a7s-and-the-voigtlander-15-heliar/