Very poor results from a test with a Hoya 46mm +1 diopter. Even after removing 3 shims from the rear of the lens, the focus would not reach to infinity.
Using the Optosigma 2000 lens however gives very good results. Removing 2 shims wasn't enough but with 3 shims out the focus reaches past infinity and gives a MFD of 7"! This is an unexpected bonus.
The only downside is no hard stop for infinity.
I used both a Techart and Hawk's adapter to check for infinity results on an A7Rii
With the Hawk's adapter you will be able to adjust the perfect hard infinity for the modded lens.
Yes, that's right! Thanks for pointing this out. The lens is perfectly usable to infinity with a later-model adjusted Hawk's adapter.
