<s>
The	O
Tenax	B-Algorithm
I	I-Algorithm
is	O
a	O
24x24	O
mm	O
fixed	O
lens	O
camera	O
by	O
Zeiss	O
Ikon	O
launched	O
in	O
1939	O
.	O
</s>
<s>
The	O
Tenax	B-Algorithm
I	I-Algorithm
was	O
actually	O
launched	O
after	O
the	O
Tenax	B-Algorithm
II	I-Algorithm
.	O
</s>
<s>
Like	O
the	O
Tenax	B-Algorithm
II	I-Algorithm
,	O
it	O
is	O
a	O
24×24mm	O
square-format	O
camera	O
taking	O
over	O
50	O
exposures	O
on	O
a	O
standard	O
135	O
film	O
(	O
35mm	O
)	O
,	O
with	O
a	O
rapid-advance	O
lever	O
next	O
to	O
the	O
lens	O
.	O
</s>
