CIMKO Lenses User manual

Your Cimko Lens is designed with computer precision and is fully
automatic. The latest optical multi-coating tecirniques are used. This
assures virtually flare{ree photography resulting in crisp, high contrast
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exposure, automation and metering capabilities of the camera on which
they are mounted.
MOUNTING THE LENS
  Your Cimko lens mount is similar in design to that of the standard
automatic lens (50mm, 55mm, etc). lt is mounted and dismounted in the
same manner as the'standard' lens. Consult your camera instruction
manualfor detailed instructions on mounting interchangeable lenses on
your camera.
AUTO DIAPHRAGM-MANUAL CONTROL
  Some lens models have an A-M ring next to the diaphragm ring which
functions as a preview (stop down) mechanism on the lens. For normal
automatic operation the ring sfror:lci 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.
SETTING THE F STOP
  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 indicated by the camera's bu-ilt-in
exosure meter or an independent meter or may be indicated by special
reouirements.
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 your
Cimko auto lens except with the Pentax Universal Screw Mount. Then
metering must be done at shooting apertures only.
EE OPERATION
   Minolta and Canon mount lenses allow automatic aperture selection
when used on cameras having thi'c feature.
  With the Minolta XD-l1 cam-era and Minolta M6unt 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.
  For use with the Canon EF, AE-1, A-1 and F-1lServo EE cameras,
rotate the diaphragm ring to the green mark just beyond the minimum
aperture setting.
CAUTION: Do not attempt to mount a lens on Canon cameras other
than the F-1, A-1, AE-l  , AV-lor EF while the diaphragm ring is set to the
EE position. First turn the diaphragm ring to a manual aperture setting  in
order to retract the EE pin on the rear of the lens.
INFRA.RED FOCUS
   For infra-red photography, cori'ection  of the distance scale is

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necessary because infra-red rays are longer than the light rays of the
               Focusvisual spectrum.                                 first in the                                    manner                                 ordinary                                         and then
exposure              reset                               indicated                   the distance                                   on                                             the focusing                                                                 ring- tobeforetheappropriate- R-index (red lines). For proper exposure and filtration with
infra-red materials, follow the film manufacturers recommendations.
(lnfra-red index lines are not included on all lenses).
DEPTH OF FIELD
  Some lenses are provided with a depth of field scale. On these, depth
of field is indicated for any distance and t 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 finding of your camera and rotate the focusing
ring for 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 desireable 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 PARFOCAL ZOOM LENSES
  The Cimko 80-200mm Macro Zoom Lens is a true oarfocal 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, you may focus 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 before 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 setting: 200mm for the
75-200mm. For largest reproduction ratios turn the zoom control to this
focal setting.

USING ONE.TOUCH ZOOM LENSES
  The compact one-touch zoom lens has oric rotatiflg barrel which
 covers everything; zooming. focusing, and macro-focusirg  (on some
models)with one continued action. This one{ouch zoom lens can be
handled in the same manner as the parfocal zoom lens except that
zooming is done by sliding the barrel back and forth.
USING THE VARI-APERTURE ZOOM LENSES
  Some        wide{ele              zoom lenses                            have                                      variable                                                  design                                            aperture
 lens    speed            continuously                      changes                               as the                                             focal setting                                             on                                                   a zoom- lensthe is
altered. On a 35-'100mm f3.5/4.3 zoom lens, for instance, the lens                          i'
speed of f4.3 is accurate for the focal setting of 35mm and that of f4.3             t-
for 1OOmm. These variations  in the lens speeds are automatically
adjusted for correct exposure by the metering system on your camera.
USING THE VIEW-FINDER WITH TELEPHOTO LENSES
  The effectiveness of different 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 normal camera lenses 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 bv the
size of the camera's mirror which is adequate for the shorter focal
length lenses only. The exposed side or negative  will be unaffected by
this viewing deficiency.                                                                      k
PROPER CARE OF YOUR MC AUTO LENS
  Your Cimko lens should always be capped to protect  it when not in
use.  lt should never be wiped wilh tissue since such tissue may abrade
the surface with any dust which might be on it or on the lens.
  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 exercising 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 Cimko lens.
PREVENTION OF HAND MOVEMENT:
    It is very important to hold the camera stationary especially with long
focal length lenses. In general hold the camera with your right hand and
the lens with your left. The camera should be touching your face slightly. The
higher the shutter speed, the more allowance there is for hand movement
during the exposure. One guideline for deciding upon the slowest shutter
speed is to take the focal length of your lens and divide by 100 (i.e. 250mm
lens use 1/250 sec. shutter speed or faster). lf you desire to use slower
shutter speeds, we recommend the use of a tripod.