<s>
The	O
Canon	B-Algorithm
EOS-3	I-Algorithm
is	O
a	O
35mm	O
film	O
single-lens	B-Algorithm
reflex	I-Algorithm
camera	I-Algorithm
for	O
professionals	O
and	O
advanced	O
amateurs	O
built	O
by	O
Canon	O
of	O
Japan	O
.	O
</s>
<s>
The	O
camera	O
is	O
the	O
successor	O
to	O
the	O
EOS-5	B-Algorithm
but	O
has	O
a	O
lot	O
in	O
common	O
with	O
the	O
canon	O
EOS-1n	O
such	O
as	O
the	O
operation	O
of	O
the	O
camera	O
controls	O
and	O
the	O
environmental	O
sealing	O
,	O
whereas	O
the	O
EOS-5	B-Algorithm
has	O
none	O
.	O
</s>
<s>
The	O
EOS-3	O
introduced	O
the	O
45-point	O
autofocus	O
system	O
later	O
used	O
in	O
the	O
EOS-1v	B-Algorithm
,	O
EOS-1D	B-Algorithm
and	O
subsequent	O
Canon	O
professional	O
SLRs	B-Algorithm
.	O
</s>
<s>
It	O
was	O
the	O
last	O
camera	O
outside	O
the	O
1-series	O
,	O
either	O
film	O
or	O
digital	O
,	O
to	O
receive	O
Canon	O
's	O
top-of-the-line	O
AF	O
system	O
until	O
the	O
March	O
2012	O
announcement	O
of	O
the	O
EOS	B-Algorithm
5D	I-Algorithm
Mark	I-Algorithm
III	I-Algorithm
.	O
</s>
<s>
The	O
EOS-3	O
inherited	O
a	O
refined	O
version	O
of	O
the	O
Eye-Control	O
system	O
of	O
the	O
EOS-5	B-Algorithm
.	O
</s>
<s>
The	O
shutter	O
unit	O
of	O
the	O
EOS-3	O
passed	O
Canon	O
's	O
standard	O
endurance	O
tests	O
of	O
100,000	O
shutter	O
cycles	O
whereas	O
the	O
EOS-1v	B-Algorithm
was	O
specified	O
to	O
withstand	O
at	O
least	O
150,000	O
shutter	O
cycles	O
.	O
</s>
