Pentax 6x7 - Rear Lens Filter Attachment; Built-in Filters on Fish-Eye Takumar

have to be unscrewed and removed (Photo
below left).
Bayonet mounting filters: Align the white dot
of the filter adaptor ring shown in the middle
photo with the dot on the filter and give the
filter a 1 1 6th turn to the right until it bayonets
in place.
Screw-in filters: Simply screw the
filter into the threads of the adapter ring.
After you have attached the filter to the
ring, screw the ring back into position at the
rear of the lens.
NOTE:
Slight focal adjustments may be re-
quired due
to the addition of the rear filter.
Built- in Filters
SMC Fish-Eye Takumar : The SMC Fish-Eye
Takumar
67 lens features four built-in filters
(UV, Y2,
02 and R2). The filter of your choice
may be
employed by turning the filter dial on
the front rim of the lens. Gelatine filters may
also be employed in conjunction with this lens
for additional filter applications. Cut gelatine
filters to the appropriate size and insert them
into the gelatine filter clip at the rear of the
lens.