oneANT
Established
Its an A5 (no meter and diamond rf) with an Ultron f2 50mm. On the aperture dial is a red dot between f/5.6 and f8. The manual says ...
For snapshots by zone focusing without using the rangefinder the distance scale carries two special marks. When the distance is set at the triangle mark (10 feet) everything between 8 and 15 feet will be sharp; when set at the circle mark (30 feet) the zone of sharp focus extends from 15 feet to 00.
I understand zone focus and dof and I can see the benefit for a quick to use no focus solution for these two lengths but can anyone tell me anything at all about this feature, was it common on cameras of the day for example. Do you use it? Why 10 & 30 feet and why a dot between the apertures, it even has its own click stop.
Ant.
For snapshots by zone focusing without using the rangefinder the distance scale carries two special marks. When the distance is set at the triangle mark (10 feet) everything between 8 and 15 feet will be sharp; when set at the circle mark (30 feet) the zone of sharp focus extends from 15 feet to 00.
I understand zone focus and dof and I can see the benefit for a quick to use no focus solution for these two lengths but can anyone tell me anything at all about this feature, was it common on cameras of the day for example. Do you use it? Why 10 & 30 feet and why a dot between the apertures, it even has its own click stop.
Ant.