Lenses & filters
Promaster Automatic Lenses 28 and 80-200mmimportant info on EE lens mounting User manual
User manual for Promaster Automatic Lenses 28 and 80-200mmimportant info on EE lens mounting. 7 pages in English. Read the original PDF, download or print a copy without registration.
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- Brand
- Promaster
- Model / document
- Promaster Automatic Lenses 28 and 80-200mmimportant info on EE lens mounting
- Document type
- User manual
- Language
- English
- Pages
- 7
- File size
- 1.6 MB
- Category
- Lenses & filters
- Document date
- Not specified in catalog
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Page 1 · Read text
www.butkus.us Read the warning on using their lenses on older cameras with the EE set !View original page 1
Page 3 · Read text
Your MC auto Lens is fully automatic and incorporates not
only computer optical design but also the latest optical
multi-coating techniques. The process of multi-coating assures
virtually flare free photographs even under adverse lighting
conditions resulting in crisp, high contrast pictures with full
color fidelity. In addition your MC auto 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 MC auto 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.
KR MOUNT
This is a new program mount for all Pentax "A" series, Pentax
"K", and Ricoh programmed cameras. For use with programmed
cameras, rotate the diaphragm ring to the green "AP" mark be-
yond the smallest aperture by pressing the lock-button.
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 chosen as ,/" indicated by the camera's built-in exposure meter or-rr-
independent meter; or may be dictated by special requirements,
such as controlling the depth of field.
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 MC auto lens. One exception to this is that when
using your MC lenses rvith 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-1 1 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.
For use with the Canon EF, AE-1, A-1 and F-1 cameras, rotate
the diaphragm ring to the green mark just beyond the minimum
aperture setting.
Digitally signed by mike butkus
DN: cn=mike butkus,
o=orphancameras, ou=29,
).itmike butkus email=mike@butkus.org,Date: 2019.08.20 19:05:57c=US-04'00'
.r- ;.- A*View original page 3Page 4 · Read text
www.butkus.us CAUTION: Do not attempt to mount a lens on Canon cameras other than the F-1 , A-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 then - before exposure - reset the distance indicated on thefocusing ring to the appropriate R-index (red lines). For proper exposure and f iltration with inf ra-red materials, follow the f ilm manufacturers recommendations. Inf ra-red index lines are not included on all lenses. DEPTH OF FIELD Some lenses are provided with a depth of field scale. On thgse lenses depth of f ield 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 f or quick, pref ocused shooting. For example, at f 16 the depth of f ield on your 2Bmm lens extends f rom less than 3 feet to inf inity. 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 80-20omm 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 wi ll help you to get more critical focus. Naturally, your len$ 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 before shooting. )View original page 4
Page 5 · Read text
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. Additional scales on the
index barrel indicate the reproduction (Macro) ratios. These
scales indicate the ratio of film image size to object size. The
ratios, turn the zoom control to the largest focal setting, and the
focusing ring to the closest setting.
USING ONE-TOUCH ZOOM LENSES
The Compact One-Touch Zoom Lens has one rotating barrel
which covers everything ... zooming, focusing, and macro-
focusing (on some models) with one continued action. This one-
touch zoom lens can be handled in the same manner as the
parfocal zoom lens except the zooming can be done by sliding
the barrel back and forth.
USING THE VARI.APERTURE ZOOM LENSES
Some wide-tele zoom lenses have variable aperture design. Whatl this means is that the lens speed continuously changes as the
focal setting on a zoom lens is altered. On a 28-80mm f3.5/4.5
zoom lens, for instance, the lens speed of f3.5 is accurate for the
focal setting of 28mm and that of f4.5 for 80mm. These varia-
tions in the lens speeds can automatically adjusted for correct
exposure by metering system oil your camera.
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 wideangle 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 MC auto 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 exercising any pressure. lf repeating the procedure is
necessary, use a new swab.View original page 5Page 6 · Read text
www.butkus.us Ph'rfnc'::nh'r Zoom Ring Zoom(Focal Length) Scal e Index for Diaphragm and Focal I enpth(7or,m) Scale Diaphragm ScaleView original page 6
Page 7 · Read text
Focusing and Zoom Ring Distance Scale Macro Ratio Scale Zoom(Focal Length) Scale R-lndex for Infra-Red Photography Index for Distance and Focal Length(Zoom) Scal e Index for Diaphragm Scal f)i:nhr:om Qn:la"'*H"'View original page 7
From the M. Butkus archive. Original publisher and archive notices are retained.
Check the model and edition against your equipment.
PDF verified 2026-10-10.











