<s>
The	O
Sony	B-Algorithm
FE	I-Algorithm
50mm	I-Algorithm
F2.8	I-Algorithm
Macro	I-Algorithm
is	O
a	O
full-frame	O
macro	O
prime	O
lens	O
for	O
the	O
Sony	B-Algorithm
E-mount	I-Algorithm
,	O
announced	O
by	O
Sony	O
on	O
August	O
30	O
,	O
2016	O
.	O
</s>
<s>
As	O
of	O
June	O
2017	O
,	O
the	O
50mm	O
Macro	O
lens	O
is	O
one	O
of	O
only	O
3	O
E-mount	B-Algorithm
lenses	I-Algorithm
manufactured	O
by	O
Sony	O
that	O
are	O
specifically	O
designed	O
for	O
macro	O
photography	O
,	O
with	O
the	O
others	O
being	O
the	O
Sony	B-Algorithm
E	I-Algorithm
30mm	I-Algorithm
F3.5	I-Algorithm
Macro	I-Algorithm
and	O
Sony	B-Algorithm
FE	I-Algorithm
90mm	I-Algorithm
F2.8	I-Algorithm
Macro	I-Algorithm
G	I-Algorithm
OSS	I-Algorithm
lenses	O
.	O
</s>
<s>
Though	O
designed	O
for	O
Sony	O
's	O
full	B-Algorithm
frame	I-Algorithm
E-mount	O
cameras	O
,	O
this	O
lens	O
can	O
be	O
used	O
on	O
Sony	O
's	O
APS-C	B-Algorithm
E-mount	O
camera	O
bodies	O
,	O
producing	O
a	O
field-of-view	O
equivalent	O
on	O
full	B-Algorithm
frame	I-Algorithm
of	O
75mm	O
.	O
</s>
<s>
The	O
lens	O
 '	O
autofocus	O
motor	O
is	O
slow	O
yet	O
accurate	O
on	O
older	O
Sony	B-Algorithm
E-mount	I-Algorithm
cameras	O
and	O
performs	O
much	O
better	O
on	O
newer	O
cameras	O
such	O
as	O
the	O
Sony	B-Algorithm
α6500	I-Algorithm
and	O
Sony	B-Algorithm
α9	I-Algorithm
.	O
</s>
