<s>
The	O
Eyemo	B-Algorithm
is	O
a	O
35	O
mm	O
motion	B-Application
picture	I-Application
film	I-Application
camera	I-Application
which	O
was	O
manufactured	O
by	O
the	O
Bell	O
&	O
Howell	O
Co	O
.	O
of	O
Chicago	O
.	O
</s>
<s>
Designed	O
and	O
first	O
manufactured	O
in	O
1925	O
,	O
it	O
was	O
for	O
many	O
years	O
the	O
most	O
compact	O
35mm	O
motion	B-Application
picture	I-Application
film	I-Application
camera	I-Application
,	O
having	O
a	O
100-foot	O
film	O
capacity	O
.	O
</s>
<s>
The	O
Eyemo	B-Algorithm
is	O
still	O
in	O
use	O
by	O
some	O
filmmakers	O
.	O
</s>
<s>
The	O
Eyemo	B-Algorithm
is	O
a	O
non-reflex	O
camera	O
:	O
viewing	O
while	O
filming	O
is	O
through	O
an	O
optical	O
viewfinder	O
incorporated	O
into	O
the	O
camera	O
lid	O
.	O
</s>
<s>
In	O
1929	O
there	O
was	O
the	O
first	O
three-port	O
Eyemo	B-Algorithm
,	O
while	O
the	O
"	O
spider	O
model	O
"	O
features	O
a	O
rotating	O
three-lens	O
turret	O
and	O
a	O
"	O
focusing	O
viewfinder	O
"	O
on	O
the	O
side	O
opposite	O
the	O
optical	O
viewfinder	O
.	O
</s>
<s>
Eyemos	O
feature	O
a	O
1½	O
"	O
diameter	O
lens	B-Algorithm
mount	I-Algorithm
except	O
the	O
71-k	O
model	O
,	O
which	O
is	O
slightly	O
different	O
.	O
</s>
<s>
Eyemos	O
feature	O
a	O
built-in	O
clockwork	B-Application
(	O
spring	O
wind	O
)	O
motor	O
which	O
,	O
when	O
wound	O
by	O
a	O
ratchet	O
key	O
,	O
can	O
shoot	O
about	O
20	O
seconds	O
of	O
film	O
per	O
winding	O
at	O
standard	O
24	O
fps	O
(	O
frames	O
per	O
second	O
)	O
speed	O
,	O
and	O
also	O
runs	O
at	O
speeds	O
of	O
four	O
through	O
64	O
fps	O
,	O
depending	O
on	O
the	O
model	O
.	O
</s>
<s>
The	O
Eyemo	B-Algorithm
takes	O
an	O
internal	O
load	O
of	O
100	O
feet	O
(	O
30	O
,	O
5	O
m	O
)	O
of	O
film	O
,	O
which	O
lasts	O
for	O
slightly	O
over	O
one	O
minute	O
when	O
filming	O
at	O
24	O
fps	O
.	O
</s>
<s>
When	O
used	O
with	O
a	O
400	O
ft	O
magazine	O
,	O
the	O
Eyemo	B-Algorithm
is	O
cumbersome	O
(	O
but	O
not	O
impossible	O
)	O
to	O
operate	O
without	O
the	O
use	O
of	O
a	O
tripod	O
,	O
while	O
the	O
use	O
of	O
a	O
1000-ft	O
magazine	O
requires	O
tripod	O
support	O
.	O
</s>
<s>
Some	O
camera	O
shops	O
have	O
modified	O
Eyemos	O
for	O
reflex	O
viewing	O
,	O
attached	O
video	O
taps	O
and	O
motors	O
to	O
them	O
,	O
and	O
modified	O
the	O
proprietary	O
lens	B-Algorithm
mount	I-Algorithm
to	O
allow	O
the	O
camera	O
to	O
use	O
different	O
optics	O
(	O
such	O
as	O
lenses	O
made	O
for	O
still	O
Nikon	B-Algorithm
cameras	O
)	O
.	O
</s>
<s>
Bell	O
&	O
Howell	O
also	O
built	O
the	O
successful	O
16	O
mm	O
"	O
Filmo	B-Algorithm
"	O
which	O
became	O
first	O
available	O
at	O
the	O
end	O
of	O
1923	O
.	O
</s>
<s>
In	O
the	O
1930s	O
,	O
this	O
camera	O
was	O
marketed	O
as	O
a	O
'	O
semi	O
professional	O
 '	O
camera	O
while	O
the	O
Filmo	B-Algorithm
127	O
was	O
introduced	O
as	O
an	O
amateur	O
camera	O
using	O
8	O
mm	O
film	O
.	O
</s>
