Fujinon ENG LensesFujinon 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.
- For Fujinon PL Mount Cabrio series lenses, use the Fujinon 16 bit cable: SA-206D-005. In cases where the Cabrio lens does not receive power from the camera body, use SA-206D-005 combined with Fujinon SA-206R-R16P (Fujinon RED One, RED Epic, Canon C300, Early Alexa, Etc. 20P Preson Fiz Cable and P-Tap PWR). This combo allows for power to the lens as well as data pass-through to Previzion.
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:
Broadcast and Communications Products Division
2621 Manhattan Beach Blvd.
Redondo Beach, CA
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.
Previzion ConnectionTo 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 lens.
Activating Fujinon Data For PrevizionOn some instances, Previzion either received “stuck” values that don’t match the lens zoom/focus position or it does not detect the lens as being connected. The 16 bit encoded lenses use internal encoders instead of potentiometers, so they may need to move the lens from lock to lock to zero the encoders correctly with the lens set to “servo”.
The proper startup sequence is:
- power on the lens (re-plug the lens to the camera or power on the camera) with the toggles underneath the lens focus and zoom set to servo mode;
- move zoom from lock to lock;
- check that data is properly detected in Previzion; and
- switch the focus and/or zoom over to manual mode as needed.