<s>
iISO	B-Algorithm
(	O
intelligent	O
ISO	O
)	O
flash	B-Algorithm
shoe	I-Algorithm
(	O
aka	O
"	O
reversed	O
"	O
hotshoe	B-Algorithm
)	O
is	O
the	O
unofficial	O
name	O
for	O
the	O
proprietary	O
accessory	O
flash	O
attachment	O
and	O
control	O
interface	O
used	O
on	O
Minolta	O
cameras	O
since	O
the	O
i-series	O
introduced	O
in	O
1988	O
,	O
and	O
subsequently	O
Konica	O
Minolta	O
and	O
later	O
Sony	B-Algorithm
α	I-Algorithm
DSLRs	B-Device
and	O
NEX-7	B-Device
up	O
to	O
2012	O
.	O
</s>
<s>
Sony	O
called	O
it	O
the	O
Auto-lock	B-Algorithm
Accessory	I-Algorithm
Shoe	I-Algorithm
(	O
AAS	O
)	O
.	O
</s>
<s>
In	O
order	O
to	O
speed	O
up	O
and	O
enhance	O
attachment	O
,	O
detachment	O
and	O
latching	O
,	O
it	O
departs	O
from	O
the	O
conventional	O
circa-1913	O
mechanical	O
design	O
that	O
is	O
now	O
standardized	O
as	O
ISO	O
518:2006	O
and	O
used	O
by	O
other	O
camera	O
systems	O
,	O
including	O
Canon	O
,	O
Nikon	B-Algorithm
,	O
Pentax	B-Application
,	O
Olympus	O
,	O
and	O
Leica	O
.	O
</s>
<s>
The	O
mechanical	O
design	O
of	O
the	O
accessory	B-Algorithm
shoe	I-Algorithm
now	O
common	O
on	O
most	O
cameras	O
dates	O
back	O
to	O
1913	O
,	O
when	O
Oskar	O
Barnack	O
,	O
the	O
inventor	O
of	O
the	O
Leica	O
,	O
devised	O
it	O
for	O
attaching	O
an	O
accessory	O
viewfinder	O
.	O
</s>
<s>
By	O
the	O
1940s	O
,	O
with	O
the	O
addition	O
of	O
the	O
central	O
contact	O
,	O
the	O
design	O
became	O
commonly	O
used	O
for	O
attaching	O
and	O
triggering	O
accessory	O
flashes	O
and	O
known	O
as	O
the	O
"	B-Algorithm
hot-shoe	I-Algorithm
"	I-Algorithm
.	O
</s>
<s>
Prior	O
to	O
1988	O
,	O
Minolta	O
has	O
used	O
that	O
familiar	O
,	O
common	O
hot-shoe	B-Algorithm
design	O
,	O
adding	O
,	O
just	O
like	O
the	O
other	O
makers	O
,	O
its	O
own	O
proprietary	O
contacts	O
for	O
enhanced	O
control	O
.	O
</s>
<s>
In	O
1988	O
,	O
Minolta	O
introduced	O
the	O
iISO	B-Algorithm
flash	I-Algorithm
shoe	I-Algorithm
in	O
its	O
new	O
i	B-Algorithm
series	I-Algorithm
of	O
cameras	O
.	O
</s>
<s>
Reportedly	O
conceived	O
with	O
the	O
input	O
from	O
Herbert	O
Keppler	O
in	O
1987	O
,	O
the	O
new	O
Minolta	O
patented	O
design	O
featured	O
a	B-Application
push-button	O
latching	O
mechanism	O
,	O
for	O
the	O
purpose	O
of	O
easier	O
and	O
faster	O
flash	O
attachment	O
and	O
removal	O
and	O
a	B-Application
more	O
secure	O
hold	O
.	O
</s>
<s>
On	O
12	O
September	O
2012	O
,	O
Sony	O
introduced	O
a	B-Application
new	O
21+	O
3-pin	O
metal-based	O
hotshoe	B-Algorithm
with	O
mechanical	O
quick	O
locking	O
mechanism	O
,	O
called	O
Multi	B-Algorithm
Interface	I-Algorithm
Shoe	I-Algorithm
.	O
</s>
<s>
At	O
first	O
sight	O
it	O
resembles	O
a	B-Application
standard	O
ISO	B-Algorithm
518	I-Algorithm
hotshoe	B-Algorithm
with	O
just	O
the	O
middle	O
contact	O
and	O
chassis	O
and	O
without	O
any	O
vendor-specific	O
extra	O
contacts	O
,	O
but	O
additional	O
contacts	O
are	O
hidden	O
under	O
the	O
front	O
of	O
the	O
hotshoe	B-Algorithm
.	O
</s>
<s>
The	O
new	O
hotshoe	B-Algorithm
is	O
mechanically	O
incompatible	O
with	O
the	O
iISO	B-Algorithm
hotshoe	I-Algorithm
,	O
but	O
electrically	O
backwards	O
compatible	O
.	O
</s>
<s>
The	O
first	O
cameras	O
to	O
use	O
the	O
new	O
hotshoe	B-Algorithm
are	O
the	O
SLT-A99	B-Algorithm
,	O
NEX-6	B-Algorithm
,	O
NEX-VG900	O
,	O
NEX-VG30	O
and	O
DSC-RX1	B-Algorithm
.	O
</s>
<s>
An	O
ADP-MAA	B-Algorithm
adapter	O
to	O
the	O
iISO	B-Algorithm
flash	I-Algorithm
shoe	I-Algorithm
is	O
however	O
provided	O
with	O
the	O
Sony	B-Algorithm
SLT-A99	I-Algorithm
,	O
and	O
the	O
newest	O
flash	O
Sony	O
HVL-F60M	O
,	O
which	O
uses	O
the	O
new	O
hotshoe	B-Algorithm
comes	O
with	O
a	B-Application
reverse	O
adapter	O
ADP-AMA	O
for	O
older	O
Sony	O
and	O
Minolta	O
cameras	O
.	O
</s>
<s>
The	O
last	O
cameras	O
introduced	O
utilizing	O
the	O
iISO	B-Algorithm
hotshoe	I-Algorithm
in	O
2012	O
were	O
the	O
SLT-A37	B-Algorithm
and	O
NEX-7	B-Device
as	O
well	O
as	O
the	O
Hasselblad	O
Lunar	O
.	O
</s>
<s>
The	O
use	O
of	O
the	O
button-operated	O
latch	O
,	O
besides	O
facilitating	O
a	B-Application
quick	O
,	O
one-handed	O
flash	O
attachment	O
and	O
detachment	O
,	O
also	O
eliminates	O
the	O
possibility	O
of	O
the	O
flash	O
gradually	O
working	O
itself	O
loose	O
and	O
shifting	O
in	O
the	O
shoe	O
,	O
which	O
on	O
camera	O
systems	O
using	O
the	O
ISO518	B-Algorithm
hot-shoe	B-Algorithm
can	O
lead	O
to	O
certain	O
contacts	O
being	O
broken	O
,	O
contacts	O
with	O
the	O
wrong	O
pins	O
being	O
made	O
,	O
or	O
in	O
extreme	O
cases	O
the	O
flash	O
sliding	O
off	O
the	O
hot-shoe	B-Algorithm
entirely	O
.	O
</s>
<s>
When	O
the	O
flash	O
is	O
fully	O
inserted	O
,	O
a	B-Application
spring-loaded	O
latch	O
on	O
the	O
flash	O
locks	O
into	O
the	O
indentation	O
in	O
the	O
middle	O
of	O
the	O
flash	B-Algorithm
shoe	I-Algorithm
.	O
</s>
<s>
DetachmentThe	O
user	O
presses	O
the	O
unlock	O
button	O
on	O
the	O
flash	O
body	O
,	O
which	O
,	O
by	O
means	O
of	O
a	B-Application
lever	O
or	O
a	B-Application
wedge	O
mechanism	O
disengages	O
the	O
locking	O
latch	O
,	O
enabling	O
the	O
user	O
to	O
slide	O
off	O
the	O
flash	O
from	O
the	O
camera	O
body	O
.	O
</s>
<s>
Listed	O
top-to-bottom	O
(	O
looking	O
at	O
the	O
flash	B-Algorithm
shoe	I-Algorithm
socket	O
as	O
pictured	O
above	O
,	O
or	O
with	O
the	O
camera	O
positioned	O
with	O
the	O
lens	O
pointing	O
up	O
)	O
:	O
The	O
electrical	O
interface	O
and	O
protocol	O
is	O
backward-compatible	O
with	O
the	O
older	O
Minolta	O
hotshoe	B-Algorithm
,	O
except	O
for	O
that	O
it	O
does	O
not	O
support	O
the	O
F4	O
signal	O
,	O
which	O
was	O
provided	O
by	O
the	O
first	O
generation	O
of	O
Minolta	B-Application
AF	I-Application
SLRs	O
to	O
control	O
the	O
AF	O
illuminator	O
,	O
as	O
this	O
function	O
became	O
part	O
of	O
the	O
digital	O
protocol	O
.	O
</s>
<s>
Analog	O
and	O
digital	O
control	O
modesDigital	O
control	O
mode	O
is	O
used	O
if	O
a	B-Application
contemporary	O
flash	O
is	O
detected	O
by	O
the	O
camera	O
.	O
</s>
<s>
Additional	O
electronic	O
contacts	O
on	O
Minolta	O
3000i/3700iThis	O
low-end	O
body	O
omitted	O
a	B-Application
built-in	O
flash	O
,	O
and	O
Minolta	O
made	O
available	O
D-314i	O
and	O
D-316i	O
compact	O
and	O
inexpensive	O
flashes	O
especially	O
for	O
it	O
.	O
</s>
<s>
These	O
flashes	O
relied	O
on	O
camera	O
battery	O
for	O
power	O
delivered	O
via	O
three	O
additional	O
pins	O
on	O
the	O
hot	B-Algorithm
shoe	I-Algorithm
( +5V	O
regulated	O
and	O
switched	O
flash	O
electronics	O
power	O
via	O
an	O
additional	O
contact	O
in	O
the	O
upper	O
corner	O
of	O
the	O
right	O
contact	O
column	O
,	O
and	O
unregulated	O
power	O
and	O
ground	O
wired	O
to	O
the	O
camera	O
's	O
battery	O
to	O
charge	O
the	O
flash	O
via	O
two	O
high-power	O
contacts	O
located	O
underneath	O
the	O
left	O
and	O
right	O
rails	O
)	O
.	O
</s>
<s>
The	O
iISO	B-Algorithm
hot	I-Algorithm
shoe	I-Algorithm
's	O
introduction	O
left	O
few	O
informed	O
users	O
indifferent	O
-	O
some	O
photographers	O
loved	O
it	O
,	O
while	O
others	O
hated	O
it	O
.	O
</s>
<s>
Legacy	O
supportDuring	O
its	O
1988	O
introduction	O
,	O
the	O
new	O
Minolta	O
iISO	B-Algorithm
flash	I-Algorithm
shoe	I-Algorithm
presented	O
an	O
inconvenience	O
to	O
users	O
with	O
significant	O
investment	O
in	O
the	O
old	O
,	O
ISO518	B-Algorithm
based	O
Minolta	O
flashes	O
and	O
accessories	O
.	O
</s>
<s>
The	O
fact	O
that	O
Minolta	O
chose	O
to	O
offset	O
the	O
new	O
flash	B-Algorithm
shoe	I-Algorithm
introduction	O
by	O
three	O
years	O
from	O
the	O
1985	O
SR-to-A-lens	O
mount	O
transition	O
,	O
as	O
opposed	O
to	O
doing	O
both	O
concurrently	O
,	O
may	O
have	O
added	O
insult	O
to	O
injury	O
for	O
some	O
users	O
.	O
</s>
<s>
To	O
soften	O
the	O
impact	O
,	O
Minolta	O
had	O
made	O
available	O
a	B-Application
FS-1100	O
(	O
8825-670	O
)	O
adapter	O
allowing	O
to	O
mount	O
the	O
old	O
flashes	O
and	O
controllers	O
on	O
new	O
bodies	O
,	O
and	O
a	B-Application
FS-1200	O
(	O
8825-680	O
)	O
to	O
do	O
the	O
reverse	O
.	O
</s>
<s>
A	B-Application
custom-modified	O
variant	O
of	O
the	O
FS-1100	O
also	O
featuring	O
a	B-Application
PC	O
terminal	O
was	O
made	O
available	O
by	O
the	O
Minolta	O
service	O
at	O
request	O
at	O
least	O
in	O
Germany	O
and	O
the	O
USA	O
,	O
this	O
part	O
was	O
also	O
mentioned	O
in	O
the	O
Minolta	O
USA	O
FAQs	O
under	O
the	O
unofficial	O
name	O
"	O
FS-PC	O
"	O
(	O
8825-0000-00	O
)	O
.	O
</s>
<s>
Interoperability	O
across	O
systemsIt	O
is	O
possible	O
to	O
mount	O
,	O
say	O
,	O
a	B-Application
Canon	O
flash	O
directly	O
on	O
a	B-Application
Nikon	B-Algorithm
body	O
,	O
and	O
trigger	O
it	O
during	O
the	O
exposure	O
.	O
</s>
<s>
However	O
,	O
the	O
ISO	B-Algorithm
518	I-Algorithm
hot-shoe	B-Algorithm
standard	O
does	O
not	O
govern	O
electronic	O
data	O
transfer	O
between	O
the	O
flash	O
and	O
the	O
body	O
(	O
e.g.	O
</s>
<s>
That	O
said	O
,	O
many	O
current	O
wireless	O
radio	O
triggers	O
for	O
professional	O
studio	O
strobe	O
systems	O
remain	O
a	B-Application
relevant	O
real-world	O
application	O
of	O
the	O
basic	O
ISO	B-Algorithm
518	I-Algorithm
hot-shoe	B-Algorithm
design	O
.	O
</s>
<s>
Their	O
use	O
with	O
Sony	O
and	O
Minolta	O
DSLRs	B-Device
requires	O
either	O
the	O
Minolta	O
FS-1100	O
adapter	O
,	O
now	O
discontinued	O
,	O
or	O
the	O
Sony	O
FA-HS1AM	O
adapter	O
.	O
</s>
<s>
Named	O
FA-SA1AM	O
(	O
2-8944-030-1	O
)	O
,	O
Sony	O
also	O
provided	O
a	B-Application
mechanical-only	O
mount	O
adapter	O
(	O
similar	O
to	O
the	O
FS-1100	O
but	O
without	O
any	O
contacts	O
)	O
with	O
the	O
HVL-RLAM	O
.	O
</s>
<s>
There	O
are	O
also	O
wireless	O
radio	O
triggers	O
for	O
the	O
iISO	B-Algorithm
flash	I-Algorithm
shoe	I-Algorithm
available	O
,	O
like	O
the	O
PixelPawn	O
TF-363	O
,	O
the	O
Phottix	O
Strato	O
II	O
and	O
many	O
other	O
systems	O
.	O
</s>
