<s>
The	O
Sony	B-Algorithm
FE	I-Algorithm
28-70mm	I-Algorithm
F3.5-5.6	I-Algorithm
OSS	I-Algorithm
is	O
a	O
full-frame	B-Algorithm
(	O
FE	O
)	O
variable	O
maximum	O
aperture	O
standard	O
zoom	O
lens	O
for	O
Sony	B-Algorithm
E-mount	I-Algorithm
,	O
announced	O
by	O
Sony	O
on	O
October	O
16	O
,	O
2013	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
kit	O
lens	O
for	O
Sony	O
's	O
full-frame	B-Algorithm
E-mount	B-Algorithm
(	O
FE	O
)	O
system	O
,	O
and	O
was	O
released	O
on	O
the	O
same	O
day	O
as	O
the	O
Sony	B-Algorithm
α7	I-Algorithm
and	O
Sony	B-Algorithm
α7R	I-Algorithm
.	O
</s>
<s>
It	O
is	O
often	O
bundled	O
with	O
various	O
Sony	B-Algorithm
E-mount	I-Algorithm
full-frame	B-Algorithm
mirrorless	O
cameras	O
,	O
and	O
is	O
a	O
less	O
costly	O
alternative	O
to	O
other	O
standard	O
zooms	O
such	O
as	O
the	O
Sony	B-Algorithm
Carl	I-Algorithm
Zeiss	I-Algorithm
Vario-Tessar	I-Algorithm
T*	I-Algorithm
FE	I-Algorithm
24-70mm	I-Algorithm
F4	I-Algorithm
ZA	I-Algorithm
OSS	I-Algorithm
.	O
</s>
<s>
Though	O
designed	O
for	O
Sony	O
's	O
full	O
frame	O
E-mount	B-Algorithm
cameras	O
,	O
the	O
lens	O
can	O
be	O
used	O
on	O
Sony	O
's	O
APS-C	B-Algorithm
E-mount	B-Algorithm
camera	O
bodies	O
,	O
with	O
an	O
equivalent	O
full-frame	B-Algorithm
field-of-view	O
of	O
42-105mm	O
.	O
</s>
<s>
The	O
Sony	B-Algorithm
FE	I-Algorithm
28-70mm	I-Algorithm
F3.5-5.6	I-Algorithm
OSS	I-Algorithm
shows	O
acceptable	O
chromatic	O
aberration	O
and	O
good	O
bokeh	O
.	O
</s>
<s>
Its	O
optical	O
performance	O
is	O
competitive	O
with	O
the	O
Sony	B-Algorithm
Carl	I-Algorithm
Zeiss	I-Algorithm
Vario-Tessar	I-Algorithm
T*	I-Algorithm
FE	I-Algorithm
24-70mm	I-Algorithm
F4	I-Algorithm
ZA	I-Algorithm
OSS	I-Algorithm
in	O
every	O
metric	O
tested	O
by	O
DxOMark	O
.	O
</s>
