<s>
iSight	B-Protocol
is	O
a	O
brand	O
name	O
used	O
by	O
Apple	O
Inc	O
.	O
to	O
refer	O
to	O
cameras	O
on	O
various	O
devices	O
.	O
</s>
<s>
The	O
name	O
was	O
originally	O
used	O
for	O
the	O
external	O
iSight	B-Protocol
webcam	B-Protocol
,	O
which	O
retailed	O
for	O
US$149	O
,	O
connected	O
to	O
a	O
computer	O
via	O
a	O
FireWire	B-Protocol
cable	O
,	O
and	O
came	O
with	O
a	O
set	O
of	O
mounts	O
to	O
place	O
it	O
atop	O
any	O
then	O
current	O
Apple	O
display	O
,	O
laptop	O
computer	O
,	O
all-in-one	B-Device
desktop	O
computer	O
,	O
or	O
flat	O
surface	O
.	O
</s>
<s>
Apple	O
introduced	O
iSight	B-Protocol
at	O
the	O
2003	O
Worldwide	O
Developers	O
Conference	O
,	O
and	O
It	O
was	O
intended	O
to	O
be	O
used	O
with	O
iChat	B-Protocol
AV	I-Protocol
,	O
Apple	O
's	O
video-conferencing	O
client	O
.	O
</s>
<s>
iMovie	B-Operating_System
(	O
version	O
4	O
and	O
later	O
)	O
could	O
also	O
be	O
used	O
to	O
capture	O
video	O
from	O
the	O
device	O
.	O
</s>
<s>
In	O
April	O
2005	O
,	O
Apple	O
released	O
a	O
firmware	B-Application
update	O
for	O
the	O
iSight	B-Protocol
to	O
improve	O
audio	O
performance	O
.	O
</s>
<s>
As	O
of	O
October	O
13	O
,	O
2008	O
,	O
the	O
external	O
iSight	B-Protocol
was	O
no	O
longer	O
for	O
sale	O
in	O
the	O
Apple	O
online	O
store	O
or	O
in	O
retail	O
locations	O
.	O
</s>
<s>
Meanwhile	O
,	O
Apple	O
began	O
using	O
the	O
term	O
to	O
refer	O
to	O
the	O
camera	O
built	O
into	O
Apple	O
's	O
iMac	B-Device
,	O
MacBook	B-Device
,	O
MacBook	B-Device
Air	I-Device
,	O
and	O
MacBook	B-Device
Pro	I-Device
computers	O
,	O
Thunderbolt	O
Display	O
,	O
and	O
Cinema	B-Device
Display	I-Device
.	O
</s>
<s>
In	O
November	O
2010	O
,	O
Apple	O
began	O
calling	O
them	O
"	O
FaceTime	B-Operating_System
cameras	I-Operating_System
"	O
.	O
</s>
<s>
However	O
,	O
the	O
term	O
was	O
not	O
retired	O
,	O
as	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
and	O
later	O
,	O
iPod	B-Device
Touch	I-Device
(	O
fifth	O
generation	O
and	O
later	O
)	O
,	O
iPad	B-Operating_System
(	O
third	O
generation	O
and	O
later	O
)	O
,	O
iPad	B-Operating_System
Mini	O
,	O
and	O
iPad	B-Operating_System
Pro	O
all	O
incorporate	O
an	O
“	O
iSight	B-Protocol
”	O
rear	O
camera	O
in	O
addition	O
to	O
a	O
front-facing	O
“	O
FaceTime	B-Operating_System
”	O
or	O
“	O
FaceTime	B-Operating_System
HD	O
”	O
camera	O
.	O
</s>
<s>
The	O
external	O
iSight	B-Protocol
's	O
¼-inch	O
color	O
CCD	B-Algorithm
sensor	I-Algorithm
has	O
640×	O
480-pixel	O
VGA	B-Protocol
resolution	O
,	O
with	O
a	O
custom-designed	O
three-part	O
F/2.8	O
lens	O
with	O
two	O
aspherical	O
elements	O
.	O
</s>
<s>
However	O
,	O
the	O
iSight	B-Protocol
has	O
an	O
image	O
delay	O
of	O
approximately	O
120	O
ms.	O
</s>
<s>
The	O
iSight	B-Protocol
incorporates	O
internal	O
microphones	B-Application
with	O
dual-element	O
noise	O
suppression	O
.	O
</s>
<s>
The	O
actual	O
camera	O
only	O
takes	O
up	O
one-quarter	O
of	O
the	O
unit	O
;	O
the	O
remaining	O
space	O
is	O
primarily	O
occupied	O
by	O
its	O
two	O
microphones	B-Application
and	O
mounting	O
socket	O
.	O
</s>
<s>
The	O
iSight	B-Protocol
camera	I-Protocol
weighs	O
2.3ounces	O
(	O
63.8grams	O
)	O
.	O
</s>
<s>
It	O
uses	O
a	O
single	O
FireWire	B-Protocol
400	O
(	O
IEEE	B-Protocol
1394a	I-Protocol
)	O
cable	O
(	O
included	O
)	O
for	O
audio	O
,	O
video	O
,	O
and	O
power	O
.	O
</s>
<s>
Four	O
camera	O
mounts	O
,	O
a	O
plastic	O
tube	O
carrying	O
case	O
,	O
and	O
a	O
FireWire	B-Protocol
camera	O
mount	O
adapter	O
are	O
also	O
included	O
.	O
</s>
<s>
It	O
is	O
fully	O
compatible	O
with	O
its	O
native	B-Language
macOS	B-Application
,	O
as	O
well	O
as	O
partially	O
compatible	O
with	O
the	O
Microsoft	B-Application
Windows	I-Application
and	O
Linux	B-Application
operating	I-Application
systems	I-Application
.	O
</s>
<s>
The	O
iSight	B-Protocol
has	O
a	O
small	O
green	O
LED	O
that	O
illuminates	O
when	O
the	O
camera	O
is	O
in	O
use	O
.	O
</s>
<s>
Although	O
external	O
and	O
internal	O
iSights	B-Protocol
have	O
significant	O
differences	O
,	O
Apple	O
has	O
used	O
the	O
"	O
iSight	B-Protocol
"	O
name	O
to	O
brand	O
its	O
built-in	O
video	O
camera	O
found	O
in	O
their	O
MacBook	B-Device
(	O
includes	O
Retina	B-Device
MacBook	I-Device
(	O
2015-2019	O
)	O
)	O
,	O
MacBook	B-Device
Air	I-Device
and	O
MacBook	B-Device
Pro	I-Device
notebook	O
computers	O
,	O
iMac	B-Device
desktop	O
computers	O
produced	O
since	O
late	O
2005	O
and	O
the	O
LED	B-Device
Cinema	I-Device
Display	I-Device
.	O
</s>
<s>
While	O
the	O
external	O
iSight	B-Protocol
is	O
similar	O
to	O
the	O
built-in	O
iSight	B-Protocol
,	O
the	O
built-in	O
iSight	B-Protocol
uses	O
an	O
internal	O
USB	B-Protocol
2.0	O
interface	O
and	O
not	O
the	O
FireWire	B-Protocol
400	O
(	O
IEEE	B-Protocol
1394a	I-Protocol
)	O
interface	O
used	O
by	O
the	O
external	O
iSight	B-Protocol
camera	I-Protocol
.	O
</s>
<s>
Further	O
,	O
the	O
built-in	O
iSight	B-Protocol
has	O
a	O
plastic	O
lens	O
,	O
is	O
fixed-focus	O
,	O
and	O
uses	O
a	O
CMOS	B-Device
active	B-Architecture
pixel	I-Architecture
sensor	I-Architecture
,	O
rather	O
than	O
the	O
CCD	B-Algorithm
used	O
in	O
the	O
external	O
iSight	B-Protocol
.	O
</s>
<s>
With	O
the	O
LED-Backlit	O
MacBook	B-Device
Pros	I-Device
,	O
Apple	O
has	O
moved	O
to	O
using	O
a	O
sensor	O
capable	O
of	O
1280x1024	O
pixels	O
.	O
</s>
<s>
The	O
built-in	O
iSight	B-Protocol
can	O
also	O
be	O
used	O
in	O
the	O
Photo	B-Application
Booth	I-Application
application	O
on	O
macOS	B-Application
and	O
iOS	B-Application
.	O
</s>
<s>
In	O
2011	O
,	O
the	O
iSight	B-Protocol
branding	O
on	O
cameras	O
built-in	O
to	O
displays	O
on	O
the	O
MacBook	B-Device
Pro	I-Device
and	O
iMac	B-Device
was	O
renamed	O
to	O
FaceTime	B-Operating_System
camera	I-Operating_System
.	O
</s>
<s>
The	O
FaceTime	B-Operating_System
HD	O
cameras	O
included	O
with	O
the	O
2011	O
and	O
later	O
models	O
of	O
the	O
MacBook	B-Device
Pro	I-Device
and	O
iMac	B-Device
can	O
output	O
720p	O
high-definition	O
video	O
.	O
</s>
<s>
The	O
iMac	B-Device
Pro	I-Device
,	O
released	O
in	O
December	O
2017	O
,	O
introduced	O
a	O
newer	O
generation	O
FaceTime	B-Operating_System
HD	O
camera	O
which	O
now	O
outputs	O
1080p	O
video	O
.	O
</s>
<s>
This	O
newer	O
generation	O
camera	O
was	O
later	O
built	O
into	O
the	O
2020	O
27-inch	O
iMac	B-Device
model	O
in	O
August	O
2020	O
.	O
</s>
<s>
Some	O
MacBooks	B-Device
are	O
affected	O
by	O
the	O
iSeeYou	O
vulnerability	O
,	O
potentially	O
allowing	O
their	O
iSight	B-Protocol
cameras	I-Protocol
to	O
record	O
the	O
user	O
without	O
the	O
user	O
's	O
knowledge	O
.	O
</s>
<s>
Linux	B-Operating_System
kernel	I-Operating_System
3.0	O
+	O
internally	O
contains	O
the	O
driver	O
for	O
the	O
iSight	B-Protocol
camera	I-Protocol
.	O
</s>
<s>
For	O
previous	O
versions	O
of	O
the	O
kernel	B-Operating_System
,	O
one	O
has	O
to	O
manually	O
take	O
out	O
the	O
firmware	B-Application
from	O
Apple	O
's	O
driver	O
through	O
a	O
specific	O
program	O
.	O
</s>
<s>
This	O
is	O
because	O
the	O
Apple	O
driver	O
cannot	O
be	O
deployed	O
inside	O
a	O
Linux	B-Operating_System
distribution	O
,	O
the	O
cause	O
being	O
legal	O
issues	O
.	O
</s>
<s>
This	O
lack	O
of	O
native	B-Language
support	O
in	O
the	O
kernel	B-Operating_System
for	O
iSight	B-Protocol
persists	O
on	O
MacBook	B-Device
2.1	O
.	O
</s>
<s>
The	O
June	O
2010	O
release	O
of	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
,	O
where	O
Apple	O
introduced	O
the	O
FaceTime	B-Operating_System
communication	O
platform	O
,	O
also	O
involved	O
them	O
naming	O
the	O
integrated	O
front-facing	O
camera	O
on	O
the	O
device	O
a	O
"	O
FaceTime	B-Operating_System
Camera	I-Operating_System
"	O
.	O
</s>
<s>
All	O
subsequent	O
devices	O
and	O
models	O
,	O
including	O
smartphones	O
and	O
personal	O
computers	O
,	O
released	O
after	O
this	O
announcement	O
had	O
the	O
camera	O
branded	O
as	O
FaceTime	B-Operating_System
cameras	I-Operating_System
.	O
</s>
<s>
In	O
March	O
2012	O
,	O
with	O
the	O
release	O
of	O
the	O
third	B-Operating_System
generation	I-Operating_System
iPad	I-Operating_System
,	O
Apple	O
re-introduced	O
the	O
iSight	B-Protocol
camera	I-Protocol
branding	O
for	O
the	O
rear	O
camera	O
on	O
iPhone	B-Operating_System
and	O
iPod	B-Device
Touch	I-Device
releases	O
(	O
retroactively	O
,	O
in	O
the	O
cases	O
of	O
older	O
models	O
still	O
being	O
sold	O
at	O
the	O
time	O
)	O
.	O
</s>
<s>
Apple	O
would	O
once	O
again	O
discontinue	O
use	O
of	O
the	O
iSight	B-Protocol
branding	O
in	O
2015	O
,	O
starting	O
with	O
the	O
release	O
of	O
the	O
iPhone	B-Operating_System
6s	O
.	O
</s>
<s>
Similarly	O
,	O
Apple	O
discontinued	O
the	O
use	O
of	O
the	O
FaceTime	B-Operating_System
camera	I-Operating_System
branding	O
with	O
the	O
iPhone	B-Operating_System
8	O
as	O
the	O
last	O
phone	O
in	O
2017	O
in	O
favour	O
for	O
the	O
TrueDepth	O
Camera	O
branding	O
on	O
the	O
iPhone	B-Operating_System
X	O
.	O
</s>
<s>
In	O
general	O
usage	O
the	O
iSight	B-Protocol
rear	O
camera	O
is	O
used	O
to	O
take	O
higher-resolution	O
photos	O
in	O
scenarios	O
where	O
better	O
quality	O
is	O
usually	O
desired	O
,	O
whereas	O
the	O
front-facing	O
camera	O
is	O
used	O
for	O
lower-resolution	O
casual	O
video	O
conversations	O
using	O
the	O
FaceTime	B-Operating_System
communication	O
platform	O
.	O
</s>
