<s>
The	O
Olympus	B-Algorithm
E-10	I-Algorithm
is	O
a	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
with	O
a	O
4.0-megapixel	O
CCD	B-Algorithm
image	O
sensor	O
that	O
was	O
introduced	O
in	O
2000	O
.	O
</s>
<s>
Unlike	O
most	O
digital	B-Device
SLRs	I-Device
the	O
camera	O
is	O
not	O
a	O
system	B-Algorithm
camera	I-Algorithm
–	O
its	O
lens	O
is	B-Algorithm
fixed	I-Algorithm
to	I-Algorithm
the	I-Algorithm
body	I-Algorithm
.	O
</s>
<s>
It	O
has	O
a	O
TTL	O
optical	O
viewfinder	O
,	O
and	O
a	O
4×	O
optical	O
zoom	O
lens	O
with	O
lens	O
aperture	B-General_Concept
f/2	O
–	O
2.4	O
.	O
</s>
<s>
Instead	O
of	O
a	O
moving	O
(	O
reflex	O
)	O
mirror	O
a	O
beam	O
splitting	O
fixed	O
(	O
non-reflex	O
)	O
prism	O
is	O
used	O
to	O
split	O
the	O
image	O
between	O
the	O
optical	O
viewfinder	O
and	O
CCD	B-Algorithm
.	O
</s>
<s>
Thus	O
it	O
was	O
possible	O
to	O
have	O
a	O
live	O
view	O
on	O
the	O
LCD	B-Device
and	O
in	O
parallel	O
see	O
the	O
image	O
in	O
the	O
TTL	O
viewfinder	O
.	O
</s>
<s>
It	O
was	O
succeeded	O
by	O
the	O
5-megapixel	O
Olympus	B-Algorithm
E-20	I-Algorithm
,	O
announced	O
in	O
2001	O
.	O
</s>
