Sure ... first ... Go to [menu]:
"Edit" ---> "General Preferences..." --->"Display Units" to Feet

Then ...
Open the Camera's properties and set yTran to 6.000 (feet).
Double click on the yTran parameter dial to open the Parameter Settings window and set the Min and Max values to 6.000 - then "Use Limits."

cheers,
dr geep
;=]

Remember ... "With Poser, all things are possible, and poseable!"

cheers,

dr geep ... :o]

edited 10/5/2019