<s>
The	O
Pentax	B-Application
645	O
is	O
a	O
medium	O
format	O
single-lens	B-Algorithm
reflex	I-Algorithm
system	O
camera	O
manufactured	O
by	O
Pentax	B-Application
.	O
</s>
<s>
The	O
645NII	O
provides	O
10	O
Pentax	B-Application
Functions	O
 [ PF ] 	O
to	O
set	O
the	O
camera	O
according	O
to	O
the	O
user	O
's	O
preferences	O
.	O
</s>
<s>
pdf	O
of	O
Pentax	B-Algorithm
645NII	I-Algorithm
manual	O
.	O
</s>
<s>
The	O
Pentax	B-Application
645D	O
is	O
a	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
introduced	O
in	O
2010	O
.	O
</s>
<s>
It	O
features	O
a	O
40	O
megapixel	O
CCD	B-Algorithm
sensor	I-Algorithm
manufactured	O
by	O
Kodak	O
.	O
</s>
<s>
The	O
7264×5440	O
pixel	B-Algorithm
sensor	O
measures	O
44mm	O
×	O
33mm	O
,	O
which	O
is	O
less	O
than	O
63%	O
the	O
size	O
of	O
a	O
6×	O
4.5cm	O
film	O
image	O
but	O
over	O
168%	O
of	O
a	O
full-frame	B-Algorithm
DSLR	I-Algorithm
.	O
</s>
<s>
Unlike	O
other	O
medium-format	O
DSLRs	B-Device
,	O
which	O
accept	O
digital	B-Algorithm
camera	I-Algorithm
backs	I-Algorithm
of	O
different	O
resolutions	O
or	O
even	O
manufacturers	O
,	O
the	O
645D	O
has	O
a	O
fixed-back	O
design	O
similar	O
to	O
smaller	O
full-frame	O
and	O
APS-C	B-Algorithm
DSLRs	B-Device
.	O
</s>
<s>
On	O
the	O
5th	O
of	O
February	O
2014	O
Ricoh	O
announced	O
they	O
would	O
exhibit	O
a	O
new	O
model	O
Pentax	B-Application
medium	O
format	O
digital	O
at	O
the	O
CP+	O
2014	O
Camera	O
and	O
Photo	O
Imaging	O
Show	O
,	O
tentatively	O
titled	O
the	O
"	O
645D	O
2014	O
"	O
.	O
</s>
<s>
In	O
April	O
2014	O
the	O
camera	O
was	O
announced	O
as	O
Pentax	B-Application
645Z	O
.	O
</s>
<s>
The	O
Pentax	B-Application
645Z	O
uses	O
a	O
51.4	O
megapixel	O
CMOS	O
sensor	O
and	O
a	O
27-point	O
autofocus	O
system	O
with	O
two	O
SD	O
card	O
slots	O
in	O
a	O
weather	O
sealed	O
body	O
.	O
</s>
<s>
The	O
acronym	O
"	O
smc	O
"	O
stands	O
for	O
super	O
multi-coated	O
,	O
a	O
feature	O
long	O
found	O
on	O
higher-grade	O
Pentax	B-Application
lens	O
.	O
</s>
<s>
Pentax	B-Algorithm
67	I-Algorithm
lenses	O
can	O
be	O
used	O
on	O
the	O
645	O
series	O
with	O
an	O
adapter	O
.	O
</s>
<s>
The	O
Pentax	B-Application
645	O
lens	O
mount	O
has	O
a	O
flange	O
focal	O
distance	O
of	O
70.87mm	O
.	O
</s>
