Hermann
Well-known member
Hm, I don't have the EDF or their Docter successor at hand but my experience with 7x bins (soviet ZOMZ 7x50 and Fujinon M22 - the latter are IF) is that the depth of field is so huge, that I don't need to change focus from 20m on to infinity ...
The trouble is that you need a range of something like 3m to infinity at such sites. And you need to be able to focus quickly from infinity to below 10m and back all the time.
Hermann