Wider option for A7RII in Photography Gear and Technique Posted July 21, 2019 Thank you all, as usual, this conversation is very informative and helpful. For the most part, I-m inclined to go with the 170 after the points made above, but the possibility of adding a wide rectilinear option in the future with the 230 sure has some appeal. But can somebody point me in the right direction about the removable shades? The folks at Bluewater tell me that neither the 170 nor the 230 has removable shades, and looking in the Zen website, they don't say one way or the other. I don't see in the pictures the external O-ring that allows for shade removal on the 100mm. Is there a newer model of these and if so, does anybody have a link? Thank you again for everybody's help!