<s>
A	O
reflex	B-Algorithm
camera	I-Algorithm
is	O
a	O
camera	O
that	O
permits	O
the	O
photographer	O
to	O
view	O
the	O
image	O
that	O
will	O
be	O
seen	O
through	O
the	O
lens	O
,	O
and	O
therefore	O
to	O
see	O
exactly	O
what	O
will	O
be	O
captured	O
,	O
contrary	O
to	O
viewfinder	O
cameras	O
where	O
the	O
image	O
could	O
be	O
significantly	O
different	O
from	O
what	O
will	O
be	O
captured	O
.	O
</s>
<s>
A	O
single-lens	B-Algorithm
reflex	I-Algorithm
camera	I-Algorithm
typically	O
uses	O
a	O
mirror	O
and	O
prism	O
system	O
(	O
hence	O
"	O
reflex	O
"	O
,	O
from	O
the	O
mirror	O
's	O
reflection	O
)	O
to	O
accomplish	O
this	O
.	O
</s>
<s>
The	O
mirrorless	B-Device
interchangeable-lens	I-Device
camera	I-Device
achieves	O
the	O
same	O
result	O
by	O
providing	O
the	O
photographer	O
with	O
a	O
digitally	O
captured	O
image	O
.	O
</s>
<s>
The	O
twin-lens	B-Algorithm
reflex	I-Algorithm
camera	I-Algorithm
provides	O
both	O
a	O
viewfinder	O
image	O
by	O
reflecting	O
the	O
image	O
onto	O
ground	O
glass	O
and	O
an	O
image	O
through	O
another	O
lens	O
to	O
the	O
film	O
.	O
</s>
