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page 18 of 120
5.2.2.3. Pre-marked focus rings
K2.0019834 cPRO pre-marked focus
ring imperial set
K2.0019835 cPRO pre-marked focus
ring metric set
In order to save time marking your focus rings for each lens, the cPRO / cPRO PLUS and
cPRO ONE hand units are compatible with ve imperial and ve metric pre-marked rings.
Each ring is engraved with a scale from innity to one of ve close focus values and can
be used with a wide range of lenses from wide angle to telelphoto. For more information
please refer to section “6.2.3.2.1.4. Pre-marked rings” on page 49 in this manual.
5.2.2.4. Datum line
The datum line is the reference mark on the knob. It illuminates with the knob scale
illumination. Its brightness can be controlled in the “Knob brightness” menu.
5.2.2.5. Knob illumination and status LEDs
The knob scale can be illuminated individually through the “Knob brightness” menu.
The status LEDs for the knob are built into the scale illumination, which gives you direct
feedback of the status for the knob axis.
LED status Meaning
o no axis assigned to knob / knob illumina-
tion o
solid white motor ready, no warnings /knob illumina-
tion on
green/yellow ashing calibration request
yellow ashing motor calibration
solid yellow calibration time out
solid red knob locked / no motor control / AF
red ashing no motor connected
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