On the Long Lens Head what is the difference between the indexable and non-indexable clamp?
The indexable clamp allows you to rotate the clamp in 90 degree increments and rotate the clamp in the radiused slot simply by loosening a rubberized knob. This allows cameras without lenses that have tripod collars to be used easily in this head. The non-indexable clamp is fastened with an Allen screw and can only be rotated by loosening the screw with an Allen wrench. The non-indexable clamp provides a more rigid connection and is slightly lighter but, it is less convenient to use if you are using it with anything other than a long lens with a tripod collar.
