I just asked this on an other picture, here is the answer.
I used Cornerfix with the CV12mm on the M9. I used a milky plastic and held it directly in front of the lens under an all gray sky and it worked great! Making a profile shot from a gray surface/wall with these super wides is not easy, as you always get a shadow into the picture:-)
I did not try my M-Hologon on the NEX6 or 7 as I had the impression, that the lens was touching the body somehow?
dierk
I used Cornerfix with the CV12mm on the M9. I used a milky plastic and held it directly in front of the lens under an all gray sky and it worked great! Making a profile shot from a gray surface/wall with these super wides is not easy, as you always get a shadow into the picture:-)
I did not try my M-Hologon on the NEX6 or 7 as I had the impression, that the lens was touching the body somehow?
dierk