spiratone auxiliary

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SPIRATONE
AUXILIARY
"
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OPERATING
INSTRUCTIONS
SPIRATONE
THE
FOR
AUXILIARY
FISH- EYE LENS.
The 5,.UIOIII Auxiliary
Fish-Eye
movie to 8X 10" view!
In conjunction
duces
the typical
circular
Fish-Eye
.$'IUIOII
lens
can be used successfully
with normal
Fish-Eye
has many
format
distinct
focal
with 180·
and unique
with just about any camera
length
lenses,
coverage.
advantages
the
Auxiliary
The afocal
auxiliary
over"prime"Fish-Eye
from 8mm
Fish-Eye
pro-
design
of the
lenses.
Among
them:
*
*
An almost
universal
The ability
resultant
focal
to 7.5mm,
*
to a wide va r i e tyof cameras
with various
length
of .15X
focal length
the prime focal
135mm
is converted
The normal
camera
viewing
locked
out of the way, and focusing
up,
usual
*
adaptability
to function
In conjunction
virtually
8mm
cameras;
and
range
lens ~
16mm,
as
well
as
size
and
regular
single
lens
4X5",
Fish-Eye
5X7".
lens
of circular
longer
speed
too slow),
of circular
than
some
8X10"
oneted
(slip-on
fittings
lenses
with a greatly
vignetting
prime
(both dia-
image
prime
cannot
small).
(resultIng
zoom lenses
and
(result-
too
200mm
image
Fish-Eye
between
size
reflex
is not recom-
image
may be unsatisfactory).
cause
35mm
cameras.
for use with wid e a ng le lenses
lenses
for
subminia-
and
meter
(may
suitable
inclmttTr;r""'"'''''"'''''. ,J.._~
of cameras
2-;\-X2-;\-".
ing diameter
be
focus.
half
The Auxiliary
tance
that
+"
as
finder
and press
which
so
and composing
can
be screwed
are
not
recessed
due
quality
lenses
into
or baysuitable),
front element
to increased
and auxiliary
lens).
dis-
and prime
yielding,
Example:
lenses.
in each particular
50mm
focal
length
co mb ina t io n, a
is converted
and so on.
mount of
as close
T. V. cameras;
cameras;
cameras;
for
is used,
Fish-Eye
Fish-Eye
Super
mended
of the
all types
movie
view
system
objects
into sharp
The Auxiliary
ture
to 20.25mm
with the focusing
lens,
the front
brought
35mm
length.
manner.
the prime
from
lenses,
with
SLR
c arne r a s , the mirror
is done normall~'on
need not be
'the groundglass
in the
I
SPECIF ICA T IONS
Lens construction:
10 elements.
Angle
180·
of View:
6 groups.
maximum:
variable
tion with telephoto
Aperture (resultant
I3.5
f value):
30mm lens),
maximum
50mr.l
Resulting
Circular
Focal Length:
Field
in coniunc-
lenses.
(in conjunction
£/5.6
with
in conjunction with
lens.
O. 15X the prime lens focal length.
Diameter:
O. 427X
the prime
Fixed focus.
Focusing:
lens focal
However,
ment of prime lens brings
close
as
-tinch
length.
focus adjustobjects
as
from front of Fish-
Eye into focus.
,
r,
Aperture gu ide dot
Aperture
scale
Ape-rture setting
ring (5 'stops- cl ick
setting)
@ Guide ring for prime '1ens' focal length
®
Focal
®
Set-Screw
length scale (ot-prime
for orienting
lens)
lens
(Fig.
CALCULA TION
OF DIAMETER
The d i arne tar cf thle- circular
field
multiply the :fu~·a.t:;re'~~ih·,by .427
•
Example:
~
,
is directly
lens
",
to the focal
length of the prime lens.
Simp lv
:~;;..
«p.
"'-'l"
t ..
~ .••.. :;
•
(50X.427)=21.4mm
.. '" (80X.427)=34.4mm
~"(1 00 x .42 7) =42.7
··,'J;OO'fu"i'::_'·tv.~
. ~~.~~~*·i~S,l.mr::'" -,
With normal
proportional
the field size.
"-$- .•.
-.', ••. :···~~~~a.."m.~.
•• ~
Of CIRCULAR FIELD.
to dete~mine
,~f.~,i,5.?mmpr.ime
r••
1)
"'
mm
.....
~(l35x.427)=57.7mm
'''I.:'
50mm lens
With 50mm lens
and
Fish-Eye
With 135mm lens
and Fish-Eye
MOUNTING
THE AUXILIARY FISH-EYE TO THE CAMERA
The Sp i r a to ne Auxiliary
Fish- Eye is sup-
plied with an inte rcha nge a ble rear
Ii tti ng which matches
the front
bayonet
of a specific
camera
choice.
These
fitt ing s
most popular
size
35.5,40.5,
60,62,
43,
and
46,
e
or
r
of your
available
including
in
'34,
48,49,52,55,58,
various
bayonet
s ize f itti ng s ,
screw
rear
fitting
Eye.
Thread
the
onto
Avoid
mounting
on
set
appropriate
the
or
into the front
or
are
67mm. plus
and series
Simply
lens
threads
back
bayonet
the
screw
custom
of the Fishthe
of the camera
Fish- Eye
lens.
Fi s h-Eye
adapters,
tend to be precarious
with s l ips inc ethes
and shift
e
the attach-
ORIENTING
THE FISH-EYE
--Y(the' aperture
centered
loosen
the
[Fig.l.®J
lens
scale
in
the
s e t- screw
of the Fish-Eye
upright
in
of the
Fish-Eye.
to the desired
position
the s e t- screw.
the
is
position,
base
ring
rotate
the
and retighten
...,'
,i~.!?
ment off the optica I axis.
not
e
custom
threads
LENS.
d
I
SETTING THE FOCAL LENGTH SCALE.
Rotate
the focal length scale
focal length of the prime
is set
opposite
the red
mark.
Setting
this
shifts
focal length
be used
length
focal
where
RELA TlONSHlP
Effective f va~e
scale
Focal L:ngth
~-----
indicating
Intermediate -----Value
Indicated----,
with that particular
combination.
of the
FOCAL LENGTH - APERTURE
lens
reference
scale,
the f stops available
settings
dot
focal
the diaphragm
so that the
(camera)
,--
In termediate
Ieng th scale
f 3. 5
f4
f 4.4
may
required.
f5
f
5.6---+----
f6.2
f 6. 4 ---+--f8
- .
f 9.4 ---+----
f9
flO.1
f11--+--f11.8······
f 13.2
fl6---+--f 16. 9
"
30mmor shorter
35
40
45
50
55
58
70
........... 80
85
..···..·······90
100
105
127
135
.
.
150
f 2 0.1 ..
180
f22 ---'----200
VIEWING
AND COMPOSING.
On SLR and other
cameras,
one's
eye-it
with groundglass
lens for actual
It is difficult
ing system.
to visualize
The usual
Eye picture
unless
is available
cameras,
viewing
screens,
can be estimated
the approximate
viewfinder
On twin lens reflex
the lower
field coverage
will indicate
An accessory
..
camera's
the approximate
field covered
viewing
by holding
is direct.
With non-groundglass
the Auxiliary
by the camera
Fish-Eye
with the Fish-Eye
in front
of
attached.
for 35mm cameras·
the Fish-Eye
can be shifted
from the top lens for viewing
and focusing
to
shooting.
the extreme
position
angle of coverage
of tripod
you take special
care
legs,
of the Fish-Eye,even
your hat, or
even your
when using a reflex
own feet
may show
in the
viewFish-
to avoid this.
FOCUSING.
'MIi1e the Auxiliary
Fish-Eye
focu s in g mount
of the prime
We lens.
the prime
With
3 feet to infinity.
1+
feet.
lens
At smaller
With non-reflex
has no focusing
lens is effective
set to infinity,
openings,
cameras,
OPERATING
THE DIAPHRAGM.
Always
diaphragm
set
the
phr agrn control
phr a grn scale
For
ded.
is accurate
optimum de fin ition,
the infinity
setting
of field
should
length
setting
f stop·
setting,
with
to objects
and
infinity
of the Fish-Eye
setting
view
cameras
to only
extends
may extend
aperture(wide
the f stop
and no further
of 2 or 3 stops
SLR
from
the
+"
from
from
about
to as close
as
be used at all times.
lens to its maximum
to the desired
for that focal
an aperture
the depth
own,
focus
depth of field at the infinity
of the camera
ring of the Fi s h-Eye
mount of its
in varying
shown
open).
Rotate
On the
compensation
the
d ia-
Fis h- Eye
d ia-
is required.
below the maximum opening
is r e c omrne n-
EXPOSURE.
Exposure
is determined
Fish-Eye
is set.
exposure
mechanism
meter,it
ness
On cameras
is important
than that
covered
with
is within
reading
within
unless
the total
through-the-lens
the Auxiliary
covers
meter
the subject
at which
all or part
covers
an angle
areas
selected
the
diaphragm
of the
electric
eye, the
of the built-in
exposure
may include
with such exposure
by
means
of a separate
consideraderably
na r r o we r
of g r e a t ly varying
to best record
bright-
the most signifi-
field.
metering
field·.
on the opening
When measuring
the average
and that
measured separately,
the picture
ing the entire
~eters
system,
that integrate
Fish-Eye
is used
care
~hould be taken
the entire
that
groundglass
with 135mm or longer
the
meter
image
lenses
to yield
reading
will give
a false
an image
cover-
film format.
When the Fish-Eye
meter
Fish-Eye,
of the subject
On cameras
area
manually.
to keep in mind that
be
depending
on which the Fish-Eye
must be operated
by the
which should
cant part
in the usual manner,
reading
is used with shorter
cameras,
a separate
than 135mm
exposure
meter
focal
should
length
lenses
On 35mm
be used to establish
through-the-lens
correct
exposure.
CARE OF THE FISH- EYE LENS.
The extreme
storing
times,
curvature
to avoid
except
touching
and exposed
position
and damaging
when actually
shooting.
of tht> front
the glass
Brush
element
surface.
gently
requires
special
Keep the special
to remove
dust
care
in handling
cap on the Fish-Eye
and, if necessary,
wipe
and
at all
the
lens
with as light a touch as po s s i b le,
_
WARRANTY.
The
Spiratone
and workmanship
adjustment
Auxiliary
Fish- Eye lens
for a period
necessitated
is unconditionally
of 90 days
after
by r e a s on of defect
of by us without
charge,
provided
SPIRATONE,
INC.,
135-06
no repair
Northern
date
guaranteed
of purchase;
or as the result
attempts
have
a g a.in s t defects
dur ing
of normal
that period,
in manufacture
any repair
hand ling will be taken
been made on it by any unauthorized
Blvd., Flush ing, New York
or
care
party.
11354.
Pr inted in Japan