|Posted: Tue Apr 17, 2018 8:36 am Post subject:
thank you for your reply and I apologize for my late one.
Actually, my CZJena 180/2,8 has these same chrome "buttons": from the round window, it appears the "22" value, but I cannot understand how to operate on the mentioned buttons to change the set value. Besides that, my lens works perfectly, and gives excellent results (even enhanced if I don't forget to mount a sun-shade).
All the best,