Technical information

The printed labels Ai - Ei are pictured below. Note that the midpoint of each scale is about

twice the minimum focus distance. Although the ring can be chosen to cover the entire

focus range of the lens, it is often advantageous to choose the ring which covers the

minimum focus required for the actual shooting.

For example the Summilux 18mm lens has an 18” near focus, matching the Bi ring.

However if the closest distance required is 3’, only half of the knobs rotation would be

used. Choosing the Di ring instead would make the entire rotation of the focus knob

available and double the spread of distances, dramatically improving the precision.

Note that

any focus ring can be used with any calibrated lens.

7. The Operating Mode is changed by using the Nav key to select Mode and then

pressing Choose. The three modes are:

 Normal

 Snorkel

 Custom

The Normal mode means that each of the motor channels is controlled by the

corresponding channel of the Hand Unit (the focus knob controls the focus motor, etc.)

The Snorkel mode is used to implement the pan and horizon functions of the Revolution

snorkel (or similar lenses) that require synchronizing horizon rotation to the pan rotation

with a ratio of 1:2. This mode is indicated by the letter S (fig. 7.4) in the main screen to

the left of the radio channel indication. When the system is in this mode,

neither the iris

nor the zoom motor will calibrate

. This is because the Snorkel lens doesn’t have

mechanical stops on the pan and horizon axes.

Fig.23 Increasing the “throw” of the focus knob by choosing focus ring

minimum focus.

Fig. 7.1 Fig. 7.2