<s>
The	O
Pentax	B-Algorithm
MZ-D	I-Algorithm
,	O
also	O
known	O
by	O
its	O
internal	O
code	O
name	O
of	O
MR-52	O
,	O
was	O
a	O
prototype	O
digital	B-Device
single-lens	I-Device
reflex	I-Device
camera	I-Device
from	O
Pentax	B-Application
of	O
Japan	O
.	O
</s>
<s>
The	O
MZ-D	O
was	O
derived	O
from	O
the	O
top-of-the-line	O
Pentax	B-Application
film	O
camera	O
of	O
the	O
time	O
,	O
the	O
MZ-S	B-Algorithm
.	O
To	O
give	O
space	O
for	O
the	O
extra	O
circuitry	O
and	O
battery	O
power	O
required	O
for	O
a	O
digital	O
camera	O
,	O
the	O
MZ-D	O
shape	O
incorporated	O
the	O
size	O
and	O
shape	O
of	O
the	O
MZ-S	B-Algorithm
'	O
optional	O
battery	B-Algorithm
booster	I-Algorithm
and	I-Algorithm
vertical	I-Algorithm
grip	I-Algorithm
.	O
</s>
<s>
It	O
also	O
shared	O
the	O
Pentax	B-Application
KAF2	O
lens	B-Algorithm
mount	I-Algorithm
.	O
</s>
<s>
The	O
MZ-D	O
was	O
to	O
use	O
the	O
same	O
6	O
megapixel	O
(	O
3072×2048	O
)	O
full	O
135	O
film	O
frame	O
sized	O
(	O
24×36mm	O
)	O
CCD	B-Algorithm
(	O
model	O
FTF3020-C	O
)	O
from	O
Philips	O
that	O
was	O
used	O
by	O
the	O
Contax	B-Algorithm
N	I-Algorithm
Digital	I-Algorithm
.	O
</s>
<s>
The	O
lack	O
of	O
success	O
of	O
that	O
camera	O
and	O
the	O
image	O
quality	O
problems	O
it	O
displayed	O
suggest	O
to	O
some	O
that	O
Pentax	B-Application
may	O
have	O
had	O
other	O
reasons	O
than	O
cost	O
to	O
cancel	O
the	O
MZ-D	O
project	O
.	O
</s>
<s>
Michael	O
Reichmann	O
of	O
The	O
Luminous	O
Landscape	O
stated	O
,	O
"	O
For	O
whatever	O
their	O
reasons	O
Pentax	B-Application
decided	O
that	O
they	O
could	O
n't	O
build	O
a	O
camera	O
with	O
this	O
chip	O
,	O
while	O
Contax	O
decided	O
to	O
forge	O
ahead	O
.	O
</s>
<s>
In	O
2003	O
,	O
Pentax	B-Application
released	O
a	O
different	O
design	O
6	O
MP	O
APS-C	O
sensor	O
size	O
DSLR	B-Device
,	O
the	O
Pentax	B-Algorithm
*	I-Algorithm
istD	I-Algorithm
.	O
</s>
