Instruction manual
!
• Wide-angle projection lens F1.4 20mm
•
Conversion lens
•
Zoom converter
This
wide
-angle lens
is
designed
for
projection
in a small room.
This
attachment
lens converts the
focal length
of
the
projection
lens
to
either
xO.8
or
x1.25,
i.e.,
the
standard
50mm
lens plus
this
accessory serves
as
a
40mm
wide-
angle lens
or
by
reversing
it
a
63mm
telep
hoto
lens.
You
can
make
use
of
it
when
the
projected
image
is
too
small
or
large .
When
this
converter
is
used
with
the
projection
lens,
the
focal
length
is
converted cont in'
uously
from
xO
.8
to
x 1.
25.
Using
it
,
you can vary
the
size
of
the
pro-
jected image w i
thou
t c
ha
nging
th
e
projector-to-screen distance.
PROJECTION
DISTANCE
AND
IMAGE
SIZE
The
projection
distance
refer
s
to
the
dist
a
nce
between
the
film pla
ne
and
the
sc
reen
.
In
meter
. In
feet
. (L:
Length,
W:
Width)
3
5
10
15
20
~
30
40
50
60
10
15
20
30
50
70
90
110 130
160
1
90
---~-
e---
~~-
Stan dard
le
ns
L
0.4
0.7
1.
0
1.4
2~
I 2.9
3.6
4
~
3
5.B
1.4
2~
I
2.9
4.3
7.2
10. 1
13
.0
15.B
I
B.7
(F
I.
2,50
mm)
IV
0.6 0.9
1.3
1.9 2.9
3.B
4.B
5.B
7
~
7
1.9
2.9
3.B
5.B
9.6
13~5
17.4
2
1.
2
25.1
Sta
nd
a
rd
le
ns
L
0.5 0.9
1.2
I.B
2.7 3.6
4
.5
5.4
I.B
2.7
3.6
5.4 9.0
12.6
16.2
19 .5
with
Co
nv. lens
(x 0 .8)
IV
0~
7
1.2 1.7
2.4
3.6
4
.B
6.0
7
.2
2.4
3.6
4.S 7.2
12.0
16.9
2
1.
7 26.5
Sta
nd
;;u
d lens
L 0.3
0~
6
O
.B
1.
1
1.
7
2.3 2.9
3.4
4.6
5
~6
1.1
1.7
2.3
3.4
5.B
B.I
IDA
12.7 15.0
IS.4
with Co
ny
. lens
(x
1.
25)
IV
0.4
0.
8
1.1
1.5
2.3
3.1
3.B
4.6
6
~
2
7.5
1.
5
2~3
3. 1
4.6
7.7 10.8
13.9
17
.0
20
~
I
24 .7
Standard
le
ns
L 0.4
0
~
7
9~9
1.4
2.
1 2.9
3.6
4.3
5.S
1
.4
2~
I
2.9
4.3
7.2
10.0
13~0
15~S
I
B.
7
with Elmo
scope lens
IV
1.1
1.
9
2~7
3~B
5.B
7.7
9.6
11
.5
15.4
3.S
5~B
7.7
11.5 19.3
27.0
3
4
~7
42.4
50
.1
Tele p
hoto
lens
L
0.3 0
.5
0
~7
0
~9
1
.4
1.9
2
.4
2.9
3~B
4.B
5~B
0.9
1
.4
1.9
2.9
4.B
6.7
B~6
1O~6
12.5
15 .4 I
B.3
(F
I.
B,75
mm)
IV
0
.4
0
~
6
0~9
1.3
1.9
2.6
3.2
3.B
5.1
6.4
7.7
1.3
1.
9
2.6
3.B
6.4
9~0
II
~6
1
4~
1
16.7
20.6
24
.4
Wide·angle lens
L
1.1
I.B 2.5
3.6
5.4
~
5.
~
7.2 10.B
I
B.
O
t--
(F I
.4,20mm
)
IV
1.
5 2.4
3.4
4
.B
7.2
4.B
7
~2
19.3
14.5
24 .1
23