JC Penny Lens instructions User manual

Your JCPenney Lens is fully automatic and incorporates not
only computer optical design but also the latest optical
multi-coating techniques. The process of multicoating assures
virtually flare free photographs even under adverse lighting
conditions resulting in crisp, high contrast pictures with full
color fidelity. In addition the JCPenney lenses are designed to
retain the full range of exposure automation and metering
capabilities of the camera on which they are mounted.
MOUNTING THE LENS
Your JCPenney automatic lens mount is similar in design to that
of the standard automatic lens (50mm, 55mm, etc.) with which
your camera is equipped, and is mounted and dismounted in the
same manner as the 'standard' lens. consult your camera
instruction manual for detailed instructions on mounting inter-
changeable lenses on your camera.
AUTO DIAPHRAGM _ MANUAL CONTROL
Some lens models have an A-M ring next to the diaphragm ring.
This functions as a preview (stop down) mechanism on the lens
itself . For normal automatic operation the ring should be set to
"A" Only to preview the depth of field or to meter the scene at
the shooting aperture should it be moved to the "M" position.
Many cameras have a built-in stop down switch and do not
require use of the A-M ring feature.

Rotate the diaphragm ring to set the desired F stop at the index
mark on the lens barrel. The diaphragm can be set to full stops
or to any position in-between. Proper F stop is chosen as
indicated by the camera's built-in exposure meter or an
independent meter; or may be dictated by special requirements,
such as controlling the depth of field.
METER COUPLING
Meter coupling of the lens to the camera is done automatically as
the lens is mounted on the camera body. Full aperture metering
of the original standard lens will, in most cases, be retained when
using the JCPenney lens. One exception to this is that when
using JCPenney lenses with the Pentax Universal Screw Mount,
metering must be done at shooting apertures only.

Minolta and Canon mount lenses allow automatic aperture
selection when used on cameras having this feature.
With the Minolta XD-l1 camera and Minolta Mount lenses, to
use the shutter priority mode, set the diaphragm to the
minimum aperture setting (marked in green) and set the camera
controls as indicated in the camera instruction manual.

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For use with the Canon EF, AE-l, A-1 and F-llServo EE
cameras, rotate the diaphragm ring to the green EE mark just
beyond the minimum aperture setting.
CAUTION: Do not attempt to mount a lens on Canon cameras
other than the F-1, AE-1, AV-1 or EF while the diaphragm ring
is set to the EE position. First turn the diaphram ring to a
manual aperture setting in order to retract the EE pin on the rear
of the lens.
INFRA.RED FOCUS
For infrared photography, correction of the distance scale  is
necessary because the infra-red rays are longer than the light rays
of the visual spectrum. Focus first in the ordinary manner and
                                                               the              exposure                                                indicated                               the distance                                         onthen -  before                          -  reset                                                         proper                              R-index                                             Forfocusing                                          (red lines).                the appropriate          ring to
exposure and filtration with infra-red materials, follow the film
manufacturers recommendations. Infra-red index lines are not
included on all lenses.
DEPTH OF F IE LD
Some lenses are provided with a depth of field scale. On these
lenses depth of field is indicated for any distance and f stop
setting on the double scale of f   numbers engraved on both                                   -sides of the center reference line. The distance settings opposite
the f   number being used (shown on the left and right hand      -parts of the depth of field scale) indicate the range of sharpness
at that distance and f stop.
FOCUSING THE LENS
Look through the view finder of your camera and rotate the
focusing ring to get a sharp and clear image in the view finder.
Due to the wider depth of field, it is more difficult to see the
image 'snap' into focus with wide-angle lenses or wide-angle
settings of zoom lenses than it is with telephoto lenses or
settings. This depth of field makes wide-angle focal lengths
desirable for quick, prefocused shooting. For example, at  f 16 the
depth of field on your 28mm lens extends from less than 3 feet
to infinity. The distance scale indicates the distance between the
focused subject and the film plane. The scale is necessary for
checking the depth of field, exposure with flash and infra-red
photography.
USING VARIFOCAL ZOOM LENSES
The JCPenney 35-105mm and 28-80mm Compact Zoom
Lenses have varifocal design. What this means is that for all
distances other than infinity, the focus setting must be changed
whenever the focal length is altered. For sharpest focusing first
frame your picture using the zoom control  . Some initial rough
focusing may be necessary to see the image clearly. When your
picture is composed as desired, adjust the focus control to give
the sharpest image in the view  f inder. Refocusing should be done
whenever the zoom control setting or subject distance changes.

USING PARFOCAL ZOOM LENSES
The 80-200mm Compact Macro Zoom Lens is a true parfocal
zoom lens. This means that focusing can be done at any focal
length and proper focusing will be maintained as the zoom
control is changed to compose your picture. For most critical
focus with these lenses, your lens should first be set to the
longest focal length of the zoom range, focused for the sharpest
image in the view finder and then zoomed back for the desired
composition. The larger image and shallower depth of field at
the longest focal setting in the zoom range will help you to get
more critical focus. Naturally, your lens may be focused at any
point within the zoom range, but focusing at the shortest focal
setting and zooming up should be avoided unless focus is
re-checked  bef ore shooting.
HOW TO USE THE MACRO.FOCUSING SYSTEM
Convenient close focusing capability has been provided on the
compact macro zoom lenses by having extended focusing range
at close distances. Focusing at close distances with these lenses is
done with the focusing ring in the same manner previously
described for conventional focusing. An additional scale on the
focusing ring indicates the reproduction (Macro) ratio. This scale
indicates the ratio of film image size to object size. The ratio
varies with focal length and the scale will be accurate for only
one focal settingr 200mm for tl'  80-200mm Compact Zoom
and the shortest focal settings for the varifocal zoom lenses. For
largest reproduction  ratios turn the zoom control to this focal
setti ng.

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USING THE VIEW.FINDER WITH TELEPHOTO LENSES
The effectiveness of different types of focusing screens varies
with the focal length and maximum aperture of the lens. The
range finder or microgrid prisms built into the ground glass do
not work as well with longer focal length lenses as they do with
the normal camera lens and most wide-angle  lenses, and may
blackout partially or fully. When such a condition exists,
focusing is best done on the ground glass portion of the viewing
screen. On some SLR cameras, long telephoto lenses appear to
produce a cut-off image in the upper corners or along the entire
upper edge of the view finder. Actually such viewing cut-off  is
caused by the size of the camera's mirror which is adequate for
the shorter focal length lenses only. The exposed slide or
negative will be unaffected by this viewing deficiency.

Your JCPenney lens should always be capped to protect it when
not in use. Like other precision optics, it should never be simply
wiped with tissue since such tissue may abrade the surface with
any dust which might be on it or on the lens.
Any accumulated dust should occasionally be blown off with a
syringe or one of the available pressurized air products. To
remove a fingerprint or smear, shred the edge of a lens tissue and
roll it to make a swab; dampen it with a lens cleaner specially
made for photographic optics and gently wipe the surface
without exercisi ng any pressure.  lf repeating the procedure  is
necessary, use a new swab.
Close examination of any multi-coated lens may reveal some
minor coating defects or a small bubble in an interior lens
element. These will in no way affect the performance of your
JCPenney lens.