When using most anamorphic adapters that mount to the front of your lens, focusing requires matching the distance on the anamorphic adapter and the lens itself; this can cause problems when trying to pull focus. However, when using the Cine Rangefinder, you set both your anamorphic adapter and lens to infinity and pull focus on the rangefinder.
77mm rangefinder adapter (Near/Normal)
Simplifying the process of focusing with SLR Magic anamorphic adapters
Provides a calibrated focus scale, industry standard focus direction, and a cine-style focus gear for your lens set up