<s>
The	O
Canon	B-Algorithm
EOS	I-Algorithm
5D	I-Algorithm
Mark	I-Algorithm
III	I-Algorithm
is	O
a	O
professional-grade	O
22.1	O
megapixels	O
full-frame	B-Algorithm
digital	B-Device
single-lens	I-Device
reflex	I-Device
(	O
DSLR	B-Device
)	O
camera	O
made	O
by	O
Canon	O
.	O
</s>
<s>
Succeeding	O
the	O
EOS	B-Algorithm
5D	I-Algorithm
Mark	I-Algorithm
II	I-Algorithm
,	O
the	O
Mark	O
III	O
was	O
announced	O
on	O
2	O
March	O
2012	O
.	O
</s>
<s>
This	O
date	O
coincided	O
with	O
the	O
25th	O
anniversary	O
of	O
the	O
announcement	O
of	O
the	O
first	O
camera	O
in	O
the	O
EOS	B-Algorithm
line	O
,	O
the	O
EOS	B-Algorithm
650	I-Algorithm
,	O
and	O
was	O
also	O
Canon	O
's	O
75th	O
anniversary	O
.	O
</s>
<s>
On	O
25	O
August	O
2016	O
,	O
Canon	O
announced	O
the	O
camera	O
's	O
successor	O
,	O
the	O
Canon	B-Algorithm
EOS	I-Algorithm
5D	I-Algorithm
Mark	I-Algorithm
IV	I-Algorithm
.	O
</s>
<s>
New	O
features	O
over	O
the	O
EOS	B-Algorithm
5D	I-Algorithm
Mark	I-Algorithm
II	I-Algorithm
are	O
:	O
</s>
<s>
New	O
61-point	O
autofocus	O
(	O
AF	O
)	O
system	O
with	O
41	O
cross-type	O
AF	O
points	O
and	O
five	O
dual	O
cross-type	O
points	O
,	O
High-density	O
Reticular	O
AF	O
,	O
and	O
EOS	B-Algorithm
iTR	O
(	O
Intelligent	O
Tracking	O
and	O
Recognition	O
)	O
–	O
none	O
AF	O
points	O
plus	O
six	O
Assist	O
Points	O
on	O
the	O
5D	B-Algorithm
Mark	I-Algorithm
II	I-Algorithm
.	O
</s>
<s>
The	O
Mark	O
III	O
's	O
autofocus	O
system	O
was	O
inherited	O
from	O
the	O
then	O
recently	O
announced	O
EOS-1D	B-Algorithm
X	I-Algorithm
,	O
and	O
marks	O
the	O
first	O
time	O
since	O
the	O
EOS-3	B-Algorithm
film	O
SLR	O
that	O
Canon	O
has	O
put	O
its	O
top-of-the-line	O
autofocus	O
system	O
in	O
a	O
non-1-series	O
body	O
.	O
</s>
<s>
Larger	O
3.2	O
″	O
(	O
8.1cm	O
)	O
LCD	B-Device
with	O
3:2	O
aspect	O
ratio	O
(	O
3″	O
/7.5cm	O
LCD	B-Device
screen	I-Device
with	O
approx	O
.	O
</s>
<s>
920,000	O
dots	O
resolution	B-General_Concept
,	O
in	O
4:3	O
ratio	O
on	O
the	O
5D	B-Algorithm
Mark	I-Algorithm
II	I-Algorithm
)	O
.	O
</s>
<s>
In	O
turn	O
,	O
this	O
means	O
that	O
the	O
native	O
still	O
images	O
of	O
the	O
Mk	O
III	O
completely	O
fill	O
the	O
screen	O
,	O
while	O
the	O
Mk	O
II	O
's	O
native	O
images	O
are	O
displayed	O
with	O
a	O
black	O
border	O
on	O
the	O
bottom	O
of	O
the	O
LCD	B-Device
.	O
</s>
<s>
Also	O
,	O
while	O
HD	O
video	O
remains	O
letterboxed	O
on	O
the	O
Mk	O
III	O
LCD	B-Device
,	O
as	O
on	O
the	O
Mk	O
II	O
,	O
the	O
3:2	O
ratio	O
allows	O
more	O
of	O
the	O
screen	O
to	O
be	O
used	O
for	O
video	O
display	O
.	O
</s>
<s>
Dual	O
card	O
slots	O
:	O
one	O
CompactFlash	B-Device
(	O
CF	B-Device
)	O
with	O
full	O
UDMA	O
support	O
,	O
and	O
one	O
SD	B-Device
(	O
including	O
SDHC	O
and	O
SDXC	O
cards	O
,	O
but	O
does	O
not	O
exploit	O
the	O
UHS-I	O
bus	O
)	O
–	O
the	O
Mark	O
II	O
has	O
only	O
one	O
CF	B-Device
slot	O
.	O
</s>
<s>
As	O
with	O
the	O
5D	B-Algorithm
Mark	I-Algorithm
II	I-Algorithm
,	O
the	O
shutter	O
life	O
is	O
rated	O
at	O
150,000	O
cycles	O
.	O
</s>
<s>
Canon	O
issued	O
a	O
product	O
advisory	O
indicating	O
that	O
the	O
camera	O
's	O
LCD	B-Device
panel	I-Device
,	O
when	O
illuminated	O
in	O
extremely	O
dark	O
environments	O
,	O
may	O
impact	O
the	O
camera	O
's	O
light	O
metering	O
when	O
shooting	O
.	O
</s>
<s>
Firmware	O
1.2.1	O
was	O
released	O
on	O
30	O
April	O
2013	O
to	O
allow	O
the	O
camera	O
to	O
output	O
uncompressed	B-Device
video	I-Device
via	O
HDMI	B-Protocol
and	O
permit	O
autofocus	O
ability	O
up	O
to	O
f/8	O
.	O
</s>
<s>
Firmware	O
1.3.3	O
was	O
released	O
on	O
29	O
January	O
2015	O
,	O
fixing	O
minor	O
menu	O
issues	O
and	O
improved	O
AF	O
control-ability	O
when	O
shooting	O
in	O
Live	B-Device
View	I-Device
mode	O
with	O
a	O
wide-angle	O
lens	O
.	O
</s>
<s>
Firmware	O
1.3.4	O
was	O
released	O
on	O
14	O
November	O
2016	O
,	O
it	O
corrects	O
a	O
phenomenon	O
in	O
which	O
when	O
using	O
the	O
camera	O
with	O
the	O
EF	B-Application
70-300mm	O
f/4	O
-5.6	O
IS	O
II	O
USM	O
lens	O
,	O
even	O
if	O
lens	O
aberration	O
correction	O
is	O
set	O
to	O
"	O
Enable	O
"	O
,	O
correction	O
will	O
not	O
be	O
applied	O
.	O
</s>
<s>
Firmware	O
1.3.5	O
was	O
released	O
on	O
29	O
November	O
2017	O
,	O
it	O
corrects	O
a	O
phenomenon	O
in	O
which	O
standard	O
exposure	O
may	O
not	O
be	O
obtained	O
,	O
or	O
an	O
irregular	O
exposure	O
may	O
result	O
,	O
when	O
Silent	O
LV	O
(	O
Live	B-Device
View	I-Device
)	O
shooting	O
with	O
the	O
following	O
TS-E	O
lenses	O
:	O
TS-E	O
50mm	O
f/2.8L	O
MACRO	O
,	O
TS-E	O
90mm	O
f/2.8L	O
MACRO	O
,	O
or	O
TS-E	O
135mm	O
f/4L	O
MACRO	O
.	O
</s>
<s>
In	O
July	O
2020	O
an	O
attempt	O
was	O
made	O
to	O
launch	O
a	O
cubesat	O
named	O
CE-SAT	O
1B	O
equipped	O
with	O
a	O
5DIII	B-Algorithm
sensor	B-Algorithm
on	O
an	O
Electron	O
rocket	O
.	O
</s>
