<s>
The	O
Mamiya	B-Algorithm
RZ67	I-Algorithm
is	O
a	O
professional	O
medium	O
format	O
single-lens	B-Algorithm
reflex	I-Algorithm
system	O
camera	O
manufactured	O
by	O
Mamiya	O
.	O
</s>
<s>
There	O
are	O
three	O
successive	O
models	O
:	O
the	O
RZ67	B-Algorithm
Professional	O
(	O
first	O
model	O
released	O
in	O
1982	O
)	O
,	O
RZ67	B-Algorithm
Professional	O
II	O
(	O
released	O
in	O
1993	O
)	O
and	O
RZ67	B-Algorithm
Professional	O
IID	O
(	O
released	O
in	O
2004	O
)	O
.	O
</s>
<s>
The	O
RZ67	B-Algorithm
name	O
is	O
adopted	O
from	O
the	O
model	O
name	O
of	O
the	O
Mamiya	B-Algorithm
RB67	I-Algorithm
,	O
which	O
was	O
first	O
introduced	O
in	O
1970	O
.	O
</s>
<s>
The	O
RZ67	B-Algorithm
is	O
a	O
modular	O
camera	O
system	O
,	O
meaning	O
lenses	O
,	O
viewfinders	O
,	O
ground	O
glasses	O
,	O
film	O
winders	O
and	O
film	O
backs	O
are	O
all	O
interchangeable	O
.	O
</s>
<s>
The	O
RZ67	B-Algorithm
Sekor	O
lenses	O
have	O
built-in	O
electronic	O
leaf	O
shutters	O
which	O
are	O
cocked	O
and	O
triggered	O
from	O
the	O
body	O
.	O
</s>
<s>
Mamiya	B-Algorithm
RB67	I-Algorithm
backs	O
are	O
also	O
supported	O
via	O
the	O
G-Adapter	O
.	O
</s>
<s>
The	O
RZ67	B-Algorithm
operates	O
on	O
one	O
6	O
V	O
silver	B-Device
oxide	I-Device
4SR44	I-Device
battery	I-Device
,	O
or	O
6	O
V	O
4LR44	B-Algorithm
alkaline	I-Algorithm
battery	I-Algorithm
.	O
</s>
<s>
The	O
body	O
has	O
one	O
standard	O
flash	O
hot	B-Algorithm
shoe	I-Algorithm
on	O
its	O
left	O
side	O
,	O
one	O
plug	O
for	O
a	O
standard	O
remote	O
shutter	O
cable	O
release	O
,	O
and	O
a	O
socket	O
for	O
an	O
electronic	O
shutter	O
trigger	O
.	O
</s>
<s>
The	O
RZ67	B-Algorithm
measures	O
104mm	O
(	O
W	O
)	O
×	O
133.5mm	O
(	O
H	O
)	O
×	O
211.5mm	O
(	O
L	O
)	O
with	O
the	O
110mm	O
lens	O
,	O
and	O
weighs	O
approximately	O
2.4kg	O
(	O
5.29lbs	O
)	O
.	O
</s>
<s>
The	O
RZ67	B-Algorithm
name	O
is	O
adopted	O
from	O
the	O
model	O
name	O
of	O
the	O
Mamiya	B-Algorithm
RB67	I-Algorithm
(	O
in	O
which	O
RB	O
stands	O
for	O
"	O
Revolving	O
Back	O
"	O
)	O
,	O
which	O
was	O
first	O
introduced	O
in	O
1970	O
,	O
thus	O
the	O
RZ67	B-Algorithm
also	O
takes	O
backs	O
which	O
can	O
be	O
rotated	O
90	O
degrees	O
to	O
provide	O
a	O
horizontal	O
or	O
vertical	O
composition	O
.	O
</s>
<s>
In	O
addition	O
to	O
manual	O
operation	O
(	O
photographer	O
chooses	O
aperture	B-General_Concept
and	O
shutter	O
speed	O
)	O
,	O
the	O
RZ67	B-Algorithm
is	O
able	O
to	O
operate	O
in	O
AEF	O
mode	O
with	O
an	O
AE	O
viewfinder	O
(	O
AE	O
being	O
an	O
abbreviation	O
for	O
automatic	O
exposure	O
)	O
,	O
which	O
transmits	O
exposure	O
information	O
directly	O
to	O
the	O
body	O
.	O
</s>
<s>
In	O
RBL	O
compatibility	O
mode	O
,	O
the	O
RZ67	B-Algorithm
is	O
able	O
to	O
use	O
RB67	O
lenses	O
.	O
</s>
<s>
The	O
biggest	O
difference	O
between	O
RB67	O
and	O
RZ67	B-Algorithm
is	O
that	O
the	O
RB67	O
is	O
completely	O
mechanical	O
.	O
</s>
<s>
The	O
RZ67	B-Algorithm
has	O
also	O
mechanical	O
couplings	O
between	O
the	O
parts	O
,	O
but	O
the	O
shutter	O
is	O
electronic	O
,	O
and	O
parts	O
are	O
able	O
to	O
transmit	O
exposure	O
information	O
with	O
electronic	O
couplings	O
.	O
</s>
<s>
In	O
addition	O
,	O
the	O
RZ67	B-Algorithm
has	O
plastic	O
exterior	O
body	O
,	O
which	O
makes	O
it	O
somewhat	O
lighter	O
.	O
</s>
<s>
Original	O
RZ67	B-Algorithm
Professional	O
(	O
RZ67	B-Algorithm
Pro	O
I	O
)	O
:	O
</s>
<s>
RZ67	B-Algorithm
Professional	O
II	O
(	O
RZ67	B-Algorithm
Pro	O
II	O
)	O
:	O
</s>
<s>
RZ67	B-Algorithm
Professional	O
IID	O
(	O
RZ67	B-Algorithm
Pro	O
IID	O
)	O
:	O
</s>
<s>
There	O
are	O
a	O
wide	O
variety	O
of	O
lenses	O
available	O
for	O
the	O
RZ67	B-Algorithm
:	O
</s>
<s>
90	O
mm	O
,	O
with	O
extension	O
tubes	O
1	O
and	O
2	O
has	O
the	O
largest	O
magnification	O
of	O
all	O
RZ67	B-Algorithm
lenses	O
,	O
able	O
to	O
shoot	O
1.92:1	O
.	O
</s>
<s>
All	O
lenses	O
have	O
internal	O
electronic	O
Seiko	O
#1	O
shutters	O
with	O
a	O
maximum	O
1/400	O
sec	O
speed	O
,	O
PC-type	O
X	O
flash	O
sync	O
plug	O
,	O
T-switch	O
for	O
long	O
exposures	O
,	O
a	O
plug	O
for	O
standard	O
remote	O
cable	O
release	O
for	O
B	O
exposures	O
,	O
depth	O
of	O
field	O
preview	O
lever	O
,	O
distance	O
scale	O
,	O
aperture	B-General_Concept
adjust	O
ring	O
.	O
</s>
<s>
In	O
"	O
B	O
"	O
mode	O
,	O
the	O
RZ67	B-Algorithm
models	O
will	O
expose	O
up	O
to	O
30	O
seconds	O
(	O
a	O
warning	O
beep	O
will	O
sound	O
for	O
the	O
last	O
10	O
seconds	O
)	O
.	O
</s>
<s>
Arguably	O
the	O
most	O
famous	O
photo	O
taken	O
with	O
this	O
camera	O
is	O
the	O
"	O
Bliss	O
"	O
photo	O
used	O
as	O
the	O
default	O
background	O
for	O
Microsoft	B-Application
Windows	I-Application
XP	I-Application
.	O
</s>
