<s>
PENTAX	B-Algorithm
*	I-Algorithm
ist	I-Algorithm
DS	I-Algorithm
is	O
a	O
digital	B-Device
SLR	I-Device
camera	I-Device
produced	O
by	O
Pentax	B-Application
.	O
</s>
<s>
The	O
*	O
ist	O
DS	O
was	O
a	O
lower-prices	O
follow-on	O
to	O
the	O
Pentax	B-Algorithm
*	I-Algorithm
ist	I-Algorithm
D	I-Algorithm
.	O
In	O
September	O
2005	O
the	O
Digital	O
Imaging	O
Websites	O
Association	O
(	O
DIWA	O
)	O
,	O
a	O
worldwide	O
organization	O
of	O
collaborating	O
websites	O
,	O
announced	O
that	O
Pentax	B-Application
had	O
received	O
their	O
first	O
DIWA	O
Award	O
for	O
a	O
DSLR	B-Device
camera	I-Device
.	O
</s>
<s>
As	O
with	O
other	O
Pentax	B-Application
DSLRs	B-Device
,	O
the	O
*	O
ist	O
DS	O
uses	O
the	O
Pentax	B-Algorithm
KAF	I-Algorithm
bayonet	I-Algorithm
mount	I-Algorithm
and	O
can	O
use	O
older	O
lenses	O
using	O
the	O
KA-mount	O
without	O
limitations	O
.	O
</s>
<s>
Original	O
K	B-Algorithm
mount	I-Algorithm
lenses	O
and	O
,	O
with	O
adapter	O
also	O
M42	O
screw-mount	O
lenses	O
,	O
can	O
be	O
used	O
in	O
manual	O
mode	O
by	O
selecting	O
a	O
menu	O
option	O
.	O
</s>
<s>
Along	O
with	O
the	O
other	O
D-series	O
Pentax	B-Application
DSLRs	B-Device
,	O
the	O
Pentax	B-Algorithm
*	I-Algorithm
ist	I-Algorithm
DS	I-Algorithm
,	O
Pentax	B-Device
*	I-Device
ist	I-Device
DS2	I-Device
,	O
and	O
Pentax	B-Algorithm
*	I-Algorithm
ist	I-Algorithm
D	I-Algorithm
have	O
TTL-mode	O
(	O
not	O
only	O
P-TTL	O
)	O
for	O
external	O
flash	O
.	O
</s>
<s>
This	O
allows	O
the	O
photographer	O
to	O
use	O
cheaper	O
TTL	O
flashes	O
rather	O
than	O
the	O
current	O
offerings	O
from	O
Pentax	B-Application
and	O
Samsung	O
with	O
'	O
pre-flash	O
'	O
operation	O
,	O
which	O
can	O
cause	O
some	O
subjects	O
to	O
blink	O
.	O
</s>
<s>
Introduced	O
in	O
2005	O
,	O
the	O
Pentax	B-Device
*	I-Device
ist	I-Device
DS2	I-Device
is	O
a	O
minor	O
upgrade	O
to	O
the	O
original	O
model	O
that	O
increased	O
the	O
size	O
of	O
the	O
rear	O
LCD	O
from	O
2.0	O
"	O
to	O
2.5	O
"	O
.	O
</s>
