Fujinon ENG Lenses
Fujinon ENG lenses provide a built-in encoder that can be read directly through a port on the lens marked “Serial”. There are two ports: 10 pin (13 bit encoding), and 20 pin (16 bit lens encoding).
For Fujinon standard ENG type lenses w/10 pin Hirose connectors use Fujinon part #: SA-206A-005. This is an DB9 female to Hirose male plug adapter cable.
For Fujinon 16 bit encoded ENG lenses w/20 pin Hirose connectors, use Fujinon part #: SA-206D-005. This is a DB9 female to Hirose male plug adapter cable.
To identify which kind of encoding your lens has, you may either look closely at the bottom data port of the lens itself or by model number. A 13-bit encoded lens often has an ending model number like -S58 and a 16-bit encoded lens often has an ending model number like -T5DD.
Both cables are available from B&H (search with the part #), or from Fujinon’s L.A. office:Fujinon Inc.
Broadcast and Communications Products Division
2621 Manhattan Beach Blvd.
Redondo Beach, CA 90278
13 bit encoding is marginal — some lenses will work fine, but others will display a slight oscillation in the zoom output, as the potentiometer inside jumps back and forth between readings.
For reliable, high quality encoding, use the 16 bit encoding option.
To connect any of these to Previzion, you will also need a pass-through DB9 M/F RS232 cable that is the same length as the rest of the tether. This connects from the Fujinon adapter cable to the RS232 DB9 input marked Lens on the Previzion system.
Fujinon Cine Lenses
For Fujinon 2/3″ cine-type lenses, use the Fujinon cine 16 bit lens encoder # FP314A. This uses incremental encoders, and thus requires setting the min and max positions of the lens manually at the far point of the lens barrel travel.
Alternatively, the Preston controller can be used with the Fujinon cine-type lenses, as with any other cine lense.
The 16 bit encoded lenses use internal encoders instead of potentiometers, so they need to move the lens from lock to lock to zero the encoders correctly. This can be done by starting the lens focus up in servo mode, letting it go lock to lock, and then switching over to manual mode if needed.