DA70 Limited, FA77 Limited, and A*85 are of the Same Gene

First, have a look on these optical construction:

DA70/2.4:


FA77/1.8:


A*85/1.4:


So, the optical design of FA77 and A*85 are very close enough, with the same 7 elements in 6 group configuration. It is quite obvious that the FA77 is a miniature of the A*85, only with some minor modifications. And then the DA70 is yet another simplified version of the FA77, with one close-to-rear element