Canon FPD-400D Operation Manual page 17

(NOTE) :
STANDARD Mode (switch at left side) : Standard characteristics where the
FAR Mode (switch at right side)
FAR
NEAR
This operation cannot be used for "A" type lens when
the focus demand FPD-400D is connected. (See §2.
MOUNTING and CONNECTING.)
However, this operation can be used when the focus
positional servo module is connected. Follow the
connection procedure for the "R" type lens.
FAR Mode
focus lens group moves linearly when
the knob is rotated.
: Curve characteristics where the focus
lens group exhibits less movement as
it approaches the FAR end when the
knob is rotated. This mode makes it
easy to perform fine adjustment at the
FAR end.
STANDARD Mode
Knob Position
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