Canon EF 200-400mm f4L IS USM Extender 1.4x - Manual (Page 23)

ENG-22
17. Drop-In Filters
A 52(WII)-series drop-in gelatin filter holder with
a glass filter is included with the lens. The drop-
in filter holder can be used fitted with a gelatin
filter (sold separately).
14mm
14mm
47mm
47mm
To remove the drop-in filter, press in the left
and right lock buttons and pull the filter holder
straight up out of the slot.
To install the drop-in filter, push the filter holder
straight down into the slot until it clicks into place.
● ● The filter holder can be installed facing either
forwards or backwards.
The Drop-In Screw-Type Filter Holder 52(WII) and
Drop-In Circular Polarizing Filter PL-C52(WII) are
also available (sold separately).
Because the lens optics are designed to include a
glass filter, you must always install the filter holder,
even if no gelatin filter is fitted.
Lift up the holder’s retaining plate.
Cut the gelatin filter as shown and mount it in
the holder.
Return the retaining plate to its closed
position.
COP
Y