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Mamiya RB67 Pro-SD Lenses User manual
User manual for Mamiya RB67 Pro-SD Lenses. 20 pages in English. Read the original PDF, download or print a copy without registration.
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Document details
- Brand
- Mamiya
- Model / document
- Mamiya RB67 Pro-SD Lenses
- Document type
- User manual
- Language
- English
- Pages
- 20
- File size
- 4.2 MB
- Category
- Lenses & filters
- Document date
- Not specified in catalog
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Page 3 · Read text
Momiyo RB67 Pro'SD
as aAn dpochromat lens corrects lateral aberrations may occur
colored light in the red (c), yellow result of changes in light color
(d) and blue (d wavelengths and affect image size.
while a standard photographic RB Pro-SD apochromatic Ienses
lens corrects chromatic aberra- are indispensable in correcting the
tions in the red and blue deteriorated images caused by
wavelengths and focuses them on chromatic aberrations found in
a point. long-focus lenses.
Ideally a lens must have the fol- Mamiya's own in-house optical
lowing three characteristics when technology combined with their
refracting colored wavelengths. ultra low dispersion glass have re-
l. Light rays radiated point- sulted in a new series of advanced
symmetrically should form a apochromatic Apo lenses which
symmetrical image point. have had chromatic aberrations
2. A plane image should form an all but eliminated. When using
image on the plane. infrared, black and white or color
3. Lateral magnification should be film, focal length adjustments are
constant or sirnilar at all points unnecessary after focusing - just
within the field. make exposures regardless of the
These "ideal" characteristics are, film type. All blurring of the image
however, quite difficult to obtain plane from differences in light
due to optical aberration caused color, whether it be in the center
by factors like variations in wave- or the periphery have been elimi-
length, refraction problems and nated thus ensuring sharp detailed
other optical abnormalities. Axial images. An additional striking fea-
chromatic aberrations may, for ture of the negatives produced by
example, occur as wavelengths the Apo lenses is their ability to be
change and the optical axis focal precisely overlapped to produce
point may appear distorted. On exacting vivid color reproduction.
the other hand, magnification orView original page 3Page 5 · Read text
USING THE APO LENS
Mounting the lens can be released by rotating the cock-
tl (2) clockwise until ing pin it stops, the depressing mirror bytr Set the s pressing the same time at the go while far lever (l) as as it willcocking
toward the front of the camera body. shutter cocking pin (6). Never stop the tt
frf| Remove the rear lens cap and cocking pin halfway.
make sure that the lens shutter has Tbeen cocked. Depth-of-field
E If it is not cocked, firmly rotate the 6 Depth-of-field preview
lens cocking pins (2) as far as they l. Set the aperture ring to the desire f- tl
will go toward the red dot or cocking stop and focus the lens. c
index (3). When releasing the pins, 2. Depress the depth-of-field preview A
they will return to the green dot and lever on the lens and you will be able o
the shutter blades will remain open. to check depth-of-field directly on the k
Moving the shutter cocking pins only focusing screen.
as far as the green dot will result in the S
Vshutter being incompletely cocked, so Z Using the depth-of-field scale
be sure they are set properly. l. Check the camera-to-subject dis-
Whenever a lens is removed from tance on the distance scale. f(
the camera body, it is already cocked. 2. Rotate the lens distance scale knob I
B Rotate the bayonet ring until it until the previously noted camera-to- fi
reaches the white dot (4) on the lens subiect distance is aligned with the 2
and it is aligned with the white indi- center index on the depth-of-field V
cator on the lens. scale. 3
O Seat the lens on the camera body 3. Locate the selected aperture on
so that the white indicator on the lens both sides of the depth-of-field scale.
lines up with the red alignment dot (5) 4. The figures on the lens distance
on the camera body. Then, firmly rotate scale, appearing above the selected
the lens bayonet ring clockwise, aperture, indicate the nearest and
securing the lens to the camera body. furthermost limits of sharpness for
that aperture.
Removing the lens For example, when the 2l0mm lens is focused at 5m and stopped Push the cocking lever of the down to f/4.5, everything from approx-
camera body completely down, setting imately 4m to 7m will be in focus.
the mirror and cocking the lens shutter. Since one side of the lens distance
Rotate the bayonet ring of the lens scale is in feet and the other in meterscounterclockwise until the white dot simply rotate l80o to calculate depth-on the bayonet ring aligns with the of-field in either value.white indicator on lens and then
remove it. Shutter speed
lf you try to rotate the bayonet ring Use the shutter speed dial to set
counterclockwise without first depres- speeds between l/400 seconds and 8
sing the cocking lever on the camera seconds, or at T (Time).
body, the movement of the ring will
not function, making lens removal Sittt t' tltt' lt'tts is litr';rrlisttlt'rl lo
impossible. ir :1rt'r'itit tt'tttlrct,rlltt.t' i ottsl;rtrt.
E If the lens is not used for a long Irt' stttl to t onlitrtt,rllr lot tts tlrt'
time, it is advisable to release the Ilr)s t'ttttulrt'tr tl ls ()n 7- ('\('n til)
shutter. Io tltt' III()nr('nl irt'fott' 1rrt'ssittq The shutter on a lens which has i llrt sltttlllt lr'lr',rsl lrttllrrtl. ibeen removed from the camera body :___iView original page 5Page 6 · Read text
www.butkus.us
The bulb (B) unit is used to close ing lever about 30"
the shutter when the shutter speed o Do not move the shutter cockingscale is set on Time (T). Press the but- lever until just before closing theton on the bulb or insert the cable shutter.
release after releasing the shutter. o When the shutter is closed by the
Time (T) exposures shutter cocking lever, the light baf-
E Io make a time exposure, first set fle in the camera body drops down slightly; however no foging occurs.the shutter speed ring to T and screw a
cable release into the bulb socket. When the shutter is closed by the
After doing so, the shutter will remain shutter cocking lever, the lever is
open upon depressing the shutter re- locked by the reverse motion stopper
lease button. and does not return to its original pos-
The shutter will be closed by pres- ition. when the shutter is cocked by
sing the plunger of the cable release further depressing the lever, the lever
without giving any shock to the camera. returns to its original position.
The shutter can also be closed by
following procedures. When using Apo KL lenses
(2lOmm, 250mm,350mm) with the RB
L depressing the bulb socket (7) by Pro-S, remove the lens mount adapter
finger ring.
2. turning the shutter speed ring to-
ward lsec. o The APO 500mm f/6 lens (15.6/5001)
3. pressing down on the shutter cock- cannot be used with the RB Pro-S.
Reading the focal length scale and exposure cornpensaiion clunirg
close-up photography
In the case of the Apo 350mm and 2lOmm lenses, use the focal length scale
and exposure correction scale on the camera body as follows:
Apo 350mm f/5.6
Focal length scale Use scale indication for 360mm
Exposure correction scale Read correcterd value for 360mm
Apo 210mm f/4.5
Use intermediate scale indication between Focallength scale l80mm and 250mm
Exposure correction scale Read corrected value for 250mm
t itull()lt.
When an Apo lens is used with Auto Extension Tubes, poor peripheral
light tansmission or vignetting may occur depending on the extent to which
the body bellows are extended. So when used in any of those combina-
tions, it is suggested that a test be carried out with say polaroid film.
a\,rllr,ttl, \,t''1r" ,,,.. ''
l l) i( |\View original page 6Page 7 · Read text
K]210mm ll4.5L
By combining two lenses which use ultra low
dispersion glass with one that uses anomalous
dispersion glass, the utmost in chromatic aber-
ration correction has been achieved. Since
spherical aberration is negligible, halo or aber-
ration flare has been eliminated while coma and
astigmatism have also been corrected to a
significant extent. Chromatic aberration free, the
2lOmm assures high contrast image quality over
the entire plane at open aperture. Even when
stopped down to small apertures, resolving
power and contrast remain almost unchanged.
At f/l l, however, there may be an indication of
some deterioration in quality due to diffraction.
The spherical aberrations and fluctuations that
result from the curvature of the field in close-
up or short distance photography have also
been eliminated. Pincushion distortion is less
than l%0.
Optical construction: 7 elements in 5 groups
Diaphragm: Automatic
Minimum aperture: 45
Minimum focusing distance: 1,155mm
(from the front of the lens rim)
Area covered: 256 x 318mm
Filter size: 77mm
Lens hood: Attached to lens: Screw in
Dimensions/weight: 114 (long) x 97.2mm
(outside diameter)/1,0209View original page 7Page 9 · Read text
KL250mm ll4.5L
Similar to the 2l0mm f/4.5, the 250mm f/4.5
combines two lenses which use ultra low
dispersion glass with one that uses anomalous
dispersion glass, thus producing similar image
quality, with less chromatic aberrations.
The 250mm also features high contrast and
resolving power. Spherical aberrations and
fluctuations fo cuMure of the field during short
distance photography have been remedied,
preventing image deterioration. Pincushion
distortion is less than l%0.
Optical construction: 7 elements in 5 groups
Diaphragm: Automatic
Minimum aperture: 45
Minimum locusing distance: 1,564mm
(from the front of the lens rim)
Area covered: 298 x 370mm
Filter size: 77mm
Lens hood: Attached to lens; screw in
Dimensions/weight: 137.8 (long) x 97.2mm
(outside diameter)/1,3709View original page 9Page 11 · Read text
KL350mm f6.61
The 350mm f/5.6 combines two lenses that use
ultra low dispersion glass with four out of the
remaining five lenses using anoma lous disper-
sion glass, and is corrected for a wide range of
chromatic aberrations from 400nm to 1,000nm.
All longitudinal distortions, such as spherical
aberration, astigmatism and curvature of the
field, have been corrected to less than 0.lmm:
coma and flare have been eliminated. Due to
high contrast and reduced curvature of the field,
fluctuations and/or deterioration in picture
qualig are negligible. Pincushion distoriton is
less than l%0.
Opticalconstruction: 7 elements in 6 groups
Diaphragm: Automatic
Minimum aperture: 45
Minimum focusing distance: 3,081mm
(from the front of the lens rim)
Area covered: 42O x 521mm
Filter size: 77mm
Lens hood: Attached to lens; screw in
DimensionJweight: 184.2 (long) x 97.2mm
(outside diameter)/1,21409View original page 11Page 13 · Read text
L500mm l/61
When the total length of a telephoto lens is shortened,
aberrations tend to increase so that it has been considered
optically very difficult to produce a compact lens free of
aberrations. Mamiya's own optical technology has been
able to surmount those design perplexities and the 500mm
f/6 is proof of that innbvation. It is 20.5mm shorter than the
RB500mm and like the 350mm, combines two lenses that
use ultra low dispersion glass with four that use anomalous
dispersion glass: all chromatic aberrations within the 400 to
l,000nm range have been eliminated. In addition, all
longitudinal distortions in the form of spherical aberra-
tions, astigmatism and curvature of the field, have been
corrected to less than 0.lmm: coma and flare are a thing of
the past. Thus, crystal sharp, high contrast, high resolution
images are generated. Picture deterioration due to distor-
tion caused by spherical aberration and curvature of the
field in short distance photography have been rectified and
likewise are a thing of the past. Pincushion distortion is
less than l%0.
Optical construction: 7 elements in 7 groups
Diaphragm: Automatic
Minimum aperture: 45
Minimum focusing distance: 6,064mm
(from the front of the lens rim)
Area covered: 597 x 740mm
Filter size: 105mm
Lens hood: Attached to lens; screw in
Dimensions/weight: 271.5(long) x 108mm
(outside diameter)/2,3609View original page 13From the M. Butkus archive. Original publisher and archive notices are retained.
Check the model and edition against your equipment.
PDF verified 2026-10-10.