I recently bought a Dallmeyer 3b lens, and I'm unsure about the soft focus adjustment. As you can see in the photo, the barrel has an arrow and the instruction "turn for soft focus". However, nothing will turn unless a small screw is removed from the bottom of the barrel allowing the barrel to be unscrewed from the rear elements. I don't know if that's how it's meant to turn, but I doubt it...
Near the rear of the lens, there is a small band with another arrow pointing down the lens barrel. The band doesn't turn, and has nothing to grip to make it turn, so I don't know whether that's the adjustment or not.
The 1931 Dallmeyer instructions at cameraeccentric.com aren't very specific.
Anybody got a B series Dallmeyer and know what is supposed to turn? Thanks muchly!
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