Originally Posted by venchka
You need an M body!
I should have posted this question on the CV Bessa forum.
Yes, I need a M body. Great minds think the same.
In the first phase, I would like to buy some old Leica lens first.
After buying the DR, the first phase is completed.
(a 2nd version 35mm summicron and a late version 50mm summicron DR)
Actually, I have read the DR page at CamxxxQuest,
as well as how others try to remove the black screw.
HOWEVER, I also find a web showing photos taken by Bessa R2 + DR.
So, I suspect that the combo works with some limitations.
Anyway, if it doesn't work well on a Bessa R2.
I will keep the DR for a while until I get a M6 body.