Features
This
is
a fine
super-telephoto
lens
with
a
maximum
aperture
of
F4.5.
Pentax
has
succeeded
in
overcoming
the
many
problems
of design
that
arise
with
these
long
lenses:
distortion
has
been practically
eliminated,
image
quality
and
resolution
are
high,
and the F4.5
brightness
is
ideal
for long-range
color
photography.
Since
the focal
length
of
this
lens
is
10 times
that of
a standard
lens,
it is equipped
with
a sighting
system
for
ease
of
operation.
A sturdy tripod is
necessary
as this
lens is
44cm
long
and weighs
3.5kg,
but
attachment
to
the
camera
body
is
simple
since
the rear
part
of
the barrel
is
removable.
By
loosening
the ring,
the
lens
can be
twisted
through
90·
and
clicks
into
position
for
horizontal
or
vertical
camera
position.
A lenshood
is
built
in and
filters
(49mm)
can
be
fitted
to the
rear
of
the
lens.
Main
uses
This
lens
combines super-telephoto
power
with
brightness,
and
is therefore
ideal
for night
sports
shots, press
photography,
wild
animal
studies
and many
other fields.
